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Insider Ownership

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US Activist Hedge Fund Institutional SEC 13D 13G — September 08, 2026

The September 8, 2026, batch of 50 SEC filings reveals a period of significant portfolio repositioning by major institutional investors, particularly FMR LLC (Fidelity), which executed a series of complete exits and new passive stakes. The most critical development is an escalating activist campaign at Braemar Hotels & Resorts, where the largest shareholder is nominating a full slate of directors, signaling a potential boardroom battle. A notable sector theme is the concentrated institutional ownership in Calamos closed-end funds, with MetLife holding dominant positions in several preferred share series. While most filings are routine passive disclosures, the combination of Fidelity's exits from Leggett & Platt and Orla Mining, alongside new 10%+ stakes in companies like Viatris and Graphic Packaging, suggests a strategic rotation away from certain sectors. The data also highlights a multi-class share structure concern at NaaS Technology, where a single entity controls 57.7% of voting power despite owning 51.9% of equity, creating a significant governance risk for minority shareholders.

7 high priority 43 medium 50 total filings
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US Activist Hedge Fund Institutional SEC 13D 13G — September 04, 2026

This batch of 50 filings reveals a significant shift in activist and institutional activity, with a notable increase in passive-to-active conversions and large strategic stake accumulations. The most critical development is the Tether/Rumble filing, where Tether now holds a 50.3% controlling stake, signaling a major strategic move in the digital media space. We also see a pattern of institutional investors fully exiting SPAC positions (Magnetar Financial exiting 7 SPACs), while other entities like BlueArc Capital and Grey Rock are building or maintaining large, controlling stakes. Insider activity is mixed: the CEO of Addex Therapeutics repriced options to a near-zero strike price, signaling deep insider alignment but also highlighting severe share price decline, while Lantheus is actively selling its Perspective Therapeutics stake. Period-over-period comparisons are limited in these filings, but the data shows a clear trend of large, strategic block acquisitions and a rotation away from passive SPAC exposure. The most actionable insights center on the Tether/Rumble control, the GeoPark/Gilinski transaction, and the VolitionRx activist campaign.

12 high priority 38 medium 50 total filings
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US Activist Hedge Fund Institutional SEC 13D 13G — September 03, 2026

The September 3, 2026, batch of 50 filings reveals a market dominated by passive institutional adjustments and technical corrections, with several high-conviction activist and insider moves creating distinct opportunities. A notable theme is the administrative realignment at The Vanguard Group, which generated six low-materiality filings correcting issuer CIKs and reporting zero beneficial ownership post-internal restructuring, creating noise but no actionable signals. Conversely, high-conviction activist activity is concentrated in small-cap and micro-cap names, with Gareth Nichol acquiring a 20.17% stake in Dynaresource and a group led by Bastion Trading launching an activist campaign against SkyAI (formerly Sharps Technology), demanding board change. The most significant capital event is the consummation of AbbVie's acquisition of Apogee Therapeutics at $135.11 per share, providing a clear exit for Fairmount Funds. Insider selling plans are notable at Paycom Software, where Chad Richison authorized a 10b5-1 plan to sell up to 1.09 million shares, while Ryan Cohen's passive reduction in GameStop due to dilution signals no change in insider conviction. Sector-wise, the data shows a concentration of activist interest in struggling small-cap industrials and cannabis-adjacent companies, while passive institutional flows remain steady in ETFs and mid-cap value names. The overall portfolio-level pattern suggests a bifurcated market: large passive flows are administrative, while alpha is being generated through targeted activist campaigns in distressed or underperforming small caps.

18 high priority 32 medium 50 total filings
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US Activist Hedge Fund Institutional SEC 13D 13G — September 02, 2026

This digest of 48 filings reveals a bifurcated activist landscape: aggressive, high-conviction moves by major holders like Advent International (Definitive Healthcare) and Saba Capital (BlackRock ESG Term Trust) contrast with passive institutional stake-building in ETFs and infrastructure funds. The most critical development is the potential take-private of Definitive Healthcare at $1.02/share, a 58.5% holder-led bid with insider rollover, signaling deep value. A significant pattern emerges in the SPAC and blank-check space, with three separate filers (Great Point, Deep Track, Commodore) all accumulating 5-6% passive stakes in JATT III Acquisition Corp, suggesting a coordinated or thematic bet on a deSPAC catalyst. Insider selling is notable but largely explained by estate planning (Tutor Perini) and warrant restructuring (Carvana/Root). The withdrawal of TDS's proposal to acquire Array's remaining shares is a major strategic reversal, creating uncertainty for minority holders. Capital allocation is mixed, with a $7.7M preferred equity injection into Valion Bio (Tivic Health) and a $55M structured investment in Accuray with significant execution risk. Overall, the data points to a market where large holders are forcing action (go-private bids, board engagement) while passive investors rotate into defined-outcome ETFs and infrastructure, signaling a risk-off tilt within the active opportunity set.

23 high priority 25 medium 48 total filings
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US Activist Hedge Fund Institutional SEC 13D 13G — September 01, 2026

The September 1, 2026 batch of 23 filings reveals a dominant theme of passive institutional positioning, with the most significant activist event being a decisive legal victory for ATG Capital against Empery Digital Inc., creating a high-conviction catalyst. A notable cluster of seven separate filings for Universe Pharmaceuticals INC reveals a fragmented ownership structure with multiple 9-10% passive holders, suggesting a potential hidden control structure or coordinated accumulation that warrants close monitoring. The OrthoPediatrics Corp filing shows a major activist (Squadron Capital) actively reducing its 25% stake to raise capital, creating a persistent overhang. Insider activity is minimal across the batch, with the most material signal being the complete exit of Advent International from NCS Multistage Holdings. The period-over-period data is limited in these initial ownership filings, but the transaction details and forward-looking legal catalysts provide actionable intelligence. The overall sentiment is neutral with one high-conviction mixed (bullish) signal from the Empery Digital court ruling. The key takeaway is that while most filings are passive, the Empery Digital situation and the Universe Pharmaceuticals ownership puzzle offer the most alpha generation potential.

4 high priority 19 medium 23 total filings
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US Activist Hedge Fund Institutional SEC 13D 13G — August 31, 2026

This digest of 20 SEC filings reveals a mixed landscape of activist and institutional activity. Key themes include insider confidence through significant stake increases (TDH Holdings CEO), passive institutional accumulation (Suja Life, Royalty Management), and notable insider selling (Starfighters Space). Period-over-period comparisons show a trend of passive investment disclosures (13G filings) outnumbering activist filings (13D), suggesting a cautious but accumulating market stance. The most critical development is the 49.11% controlling stake acquisition by TDH Holdings' CEO, signaling strong insider conviction. However, the significant insider selling by Starfighters Space's founder, with prices declining sharply from $10.49 to $3.96, raises a major red flag. Portfolio-level patterns indicate a focus on small-cap and micro-cap companies, with several filings involving corrections of prior filing errors, highlighting potential compliance risks.

14 high priority 6 medium 20 total filings
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US Activist Hedge Fund Institutional SEC 13D 13G — August 28, 2026

This intelligence brief covers 39 pre-analyzed SEC filings (SC 13D/G) with enriched data, focused on activist and institutional activity in US equities. The most prominent theme is a surge of passive institutional positions, with entities like Orca Capital AG filing five separate 13Gs across disparate micro-cap companies (Jupiter Neurosciences, NFT Ltd, Elong Power), and WhiteRock Wealth Design filing 13Gs in two small regional banks (Security Midwest, PFS Bancorp). Activist signals are concentrated: a clear activist campaign is escalating at **Evogene Ltd.** (19.35% holder publicly opposing board nominees), while B. Riley’s **Biomerica** stake (10.03%) includes a board appointment right. Notable insider selling overhangs were identified at **Quantum-Si Inc.** (a 10b5-1 plan to sell up to 8.9M shares) and **CBL & Associates** (291K shares sold by top holder). A significant related-party stake was built in **Expion360** (now Expion Energy) via a $4.5M convertible note for oil & gas acquisitions, and CATL (a $100B+ battery giant) indirectly acquired 11.4% of **VNET Group**. No pervasive period-over-period revenue or margin trends were available as these are ownership filings, not financial statements.

21 high priority 18 medium 39 total filings
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US Activist Hedge Fund Institutional SEC 13D 13G — August 27, 2026

The August 27, 2026 batch of 37 filings reveals a surge in activist and institutional activity, with several high-conviction campaigns and notable insider moves. Saba Capital's proxy solicitation at Bluerock Private Real Estate Fund (BPRE) and the Stilwell Group's push for a sale at Catalyst Bancorp (CLST) are the most aggressive activist actions. A clear pattern of insider selling is emerging, with the Diversis group and Diana Shipping significantly reducing stakes in Turtle Beach (HEAR) and Genco Shipping (GNK), respectively, while the CEO of MKDWELL Tech (MKDW) cemented control via a concert party agreement. Passive institutional stakes were disclosed across a range of small/mid-cap names, including Tenax Therapeutics (TENX), NFT Ltd (MI), and Ameresco (AMRC), indicating broad institutional interest. A notable theme is the use of shareholder rights demands and litigation threats, seen at Power REIT (PW) and Ethan Allen Interiors (ETH), signaling a more confrontational approach from certain investors. The data shows a bifurcated market where activist pressure is mounting in select underperformers while passive capital continues to flow into specialized sectors.

21 high priority 16 medium 37 total filings
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US Activist Hedge Fund Institutional SEC 13D 13G — August 26, 2026

This digest of 26 activist and institutional filings reveals a market dominated by passive institutional positioning and strategic block-building, with a notable surge in insider accumulation in real estate and financials. The most critical development is the formation of a 'Proposed Transaction Group' by Getty Images' largest shareholders (Getty Family and Koch Industries), who collectively own 72.9% of shares and are exploring strategic alternatives with Guggenheim Securities, signaling a potential sale or major restructuring. A second major theme is the aggressive derivative-based stake-building by the Niel Family (Iliad) in Vodafone, positioning to acquire 9.9% of the telecom giant through equity derivatives, with initial regulatory clearance obtained. Insider buying is concentrated in American Assets Trust (Rady buying $13M+ in August) and Advanced Flower Capital (Tannenbaum buying $1.6M+), while the only notable insider selling is in Sphere 3D (200K shares sold). The period-over-period data shows significant ownership changes: Getty's block increased to 45.5% (from 42.3% in prior filing), Aegon's voting power stands at 32.64%, and VerifyMe saw two insiders exit as convertible notes matured. The overall sentiment is cautiously constructive, with 3 bullish signals (Calamos Aksia buying, Rady accumulating, Tannenbaum increasing) against 2 bearish (VerifyMe insiders exiting, Loop Industries selling below 5%).

17 high priority 9 medium 26 total filings
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US Activist Hedge Fund Institutional SEC 13D 13G — August 25, 2026

This digest of 42 filings reveals a landscape dominated by significant activist and institutional activity, with a clear focus on corporate governance and value realization. The most critical development is the transformative $9.5B+ transaction between **Cox Enterprises and Charter Communications**, which reshapes the telecom landscape and creates a powerful new shareholder with board control. Activist campaigns are intensifying, with **Goldenwise Capital** nominating a director at **Phunware** and **Fund 1 Investments** taking a 9.9% activist stake in **Xponential Fitness**, signaling a push for operational improvements. A notable pattern of insider selling is emerging, with **Diana Shipping** reducing its stake in **Genco Shipping** by 1.2M shares and **Engine Capital** exiting its position in **Civeo Corp** below the 5% threshold, suggesting sector-specific concerns in shipping and energy services. Conversely, **Paine Schwartz** is aggressively accumulating shares of **Suja Life**, increasing its majority stake to 65.5% through five consecutive days of purchases at rising prices, a strong vote of confidence. The data also highlights significant dilution risk at **Edesa Biotech**, where a group's potential ownership could reach 27.8% if ownership limitations are removed. Overall, the period shows a market where large blockholders are actively deploying capital to influence strategy, while others are taking profits or reducing exposure, creating a dynamic environment for event-driven investors.

22 high priority 20 medium 42 total filings
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US Activist Hedge Fund Institutional SEC 13D 13G — August 24, 2026

This intelligence stream covers 40 filings (33 new, 7 for context) focused on major shareholder positions and activist activity. Key themes include a surge in activist campaigns targeting strategic reviews (CVRx, GEE Group), significant insider sales and ownership reductions (Tencent in Amer Sports, D.E. Shaw in Gossamer Bio, Fresenius KGaA in Fresenius Medical Care), and major M&A-related ownership changes (Lhoist/LNA Holding in Martin Marietta, Star Equity in Harte Hanks). Period-over-period data reveals notable insider buying at discounted prices (Chernett in CVRx, Levine in Global Water Resources) and a significant increase in a passive stake (Kite Lake in Optimum Communications) driven by a tender offer. The most critical development is the activist push at CVRx, where a 5.5% holder is demanding a sale, and the $7B Martin Marietta/Lhoist deal creating a new 15.4% shareholder with governance rights. Portfolio-level patterns show capital flowing into value/small-cap situations and a divergence between activist demands for change and passive stake increases post-corporate events.

23 high priority 17 medium 40 total filings
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US Activist Hedge Fund Institutional SEC 13D 13G — August 21, 2026

This digest of 38 SEC filings reveals a period of significant portfolio restructuring and capital reallocation. The most dominant theme is the unwinding of large, long-held positions, highlighted by Liberty Broadband's complete exit from both Charter Communications and comScore following its acquisition by Charter, and the disbanding of the Brera Holdings group. Concurrently, we see aggressive accumulation by activist-leaning funds, particularly Steamboat Capital's rapid build of a 7.1% stake in Medifast and Hyperscale Data's continued buying in Universal Safety Products. A notable pattern of 'passive conversion' is emerging, where entities like Tang Capital and White River Ventures are switching from activist (13D) to passive (13G) filings, signaling a de-escalation of control intentions. Insider activity is mixed; while CEO Eric Singer of Immersion Corp has a large personal stake, the complete exit by Westerly Capital from Harte Hanks and Almitas Capital from multiple positions suggests a lack of conviction in certain names. The data points to a market where sophisticated capital is rotating out of legacy positions and into specific, high-conviction bets, creating both risks and opportunities for investors.

20 high priority 18 medium 38 total filings
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US Activist Hedge Fund Institutional SEC 13D 13G — August 20, 2026

This digest of 48 activist and institutional filings reveals a market characterized by significant insider conviction in micro-cap turnaround situations, particularly in the biotechnology and specialty finance sectors, alongside notable institutional accumulation in large-cap value names like Republic Services. A key theme is the emergence of activist-like engagement from previously passive investors, such as Conifer Management's switch to a 13D for Group 1 Automotive, signaling a more active stance. Insider buying at Hepion Pharmaceuticals and the strategic accumulation by Christian Angermayer's group in Enhanced Group Inc. point to high-conviction bets on distressed assets. Conversely, the digest highlights a wave of insider selling and exit filings, including the dissolution of the Brera Holdings group and the reduction of stakes in Cimpress and Tredegar, suggesting a rotation out of certain positions. The data also reveals a cluster of passive institutional stakes in small-cap and micro-cap companies, indicating a search for alpha in less efficient markets. Overall, the period-over-period comparisons and insider activity patterns suggest a bifurcated market where insiders are aggressively backing their own turnarounds while reducing exposure to others, creating both high-risk and high-opportunity scenarios.

20 high priority 28 medium 48 total filings
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US Activist Hedge Fund Institutional SEC 13D 13G — August 19, 2026

This digest of 41 SEC filings reveals a significant uptick in activist and institutional activity centered on M&A, insider selling, and passive stake accumulation. The most critical development is the $7.40/share take-private of Weave Communications by Francisco Partners, a high-conviction event with a 9/10 materiality score. A bearish theme emerges from major insider selling, including Uber's 72M share block sale in Aurora Innovation (dropping to 10.9% ownership) and General Atlantic's $134M dLocal stake reduction. Conversely, we see aggressive accumulation by the Winklevoss entities in Cypherpunk Technologies (19.9% stake) and a new 5.6% passive position in Grocery Outlet by Pertento Partners. Period-over-period comparisons highlight a trend of dilution-driven ownership decreases, as seen in Camp4 Therapeutics and Silexion Therapeutics, the latter also embroiled in a high-stakes legal dispute over share validity. The data also reveals a pattern of SPAC sponsor filings (OceanLight, Futurewave, Pelican) with no announced targets, signaling a watchful period for de-SPAC catalysts. Overall, the stream points to a market where large holders are actively rebalancing portfolios, with a clear bias toward monetizing positions in growth-stage companies while selectively building stakes in special situations and value-oriented plays.

17 high priority 24 medium 41 total filings
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US Activist Hedge Fund Institutional SEC 13D 13G — August 18, 2026

Today's filings reveal a diverse set of activist and institutional activity centered on corporate events: mergers, spin-offs, IPOs, and share repurchases. A key theme is the material changes in ownership percentages driven by these events, such as the all-stock acquisitions of Katapult Holdings and the merger between Fortitude Mining and HeartSciences. We also see several large passive stakes being disclosed in companies like Advasa Holdings and KE Holdings, whose ownership percentages increased solely due to share buybacks. Notable insider activity and potential activist influence are emerging at Ensysce Biosciences and BlossomHill Therapeutics. However, a significant risk flag is the aggressive selling by Fresenius in Humacyte, with stock prices declining 23.5% over six trading days. Across the board, PIPE financings and private placements continue to be a method for institutional investors to take large, influential stakes, with TPG and MapLight Therapeutics being prime examples.

27 high priority 16 medium 43 total filings
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US Activist Hedge Fund Institutional SEC 13D 13G — August 17, 2026

The August 17, 2026, batch of 50 filings reveals a landscape dominated by activist escalation, significant insider capital deployment, and a major M&A consummation. The most critical development is a dual-front boardroom battle at Better Home & Finance Holding Co, where both the founder/CEO and an activist investor group have filed to remove directors, signaling a high-stakes control fight. This is complemented by a withdrawn hostile takeover bid at Genco Shipping & Trading, where the largest shareholder publicly excoriated the board's valuation demands. On the positive side, several filings show deep insider conviction: the CEO of Apollomics increased his stake to nearly 50% via a PIPE, a major shareholder at HWH International executed a change-of-control transaction, and Nantahala Capital secured board representation at Femasys. The Fenelon Opportunity Fund continued its aggressive capital deployment, initiating or increasing passive stakes in six companies across consumer, gaming, and hospitality sectors. The Talkspace acquisition by Universal Health Services was completed, providing a clear exit for activist investors. Overall, the period is characterized by heightened activist pressure, significant insider capital at work, and a focus on unlocking value through board changes and M&A.

22 high priority 28 medium 50 total filings
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US Activist Hedge Fund Institutional SEC 13D 13G — August 14, 2026

The August 14, 2026 batch of 50 filings reveals a dominant theme of passive institutional repositioning with notable activist stirrings. A key portfolio-level trend is the widespread reduction in stakes by major passive investors like BlackRock and Vanguard, with several positions decreasing by 90-130 basis points, indicating broad index rebalancing or sector rotation rather than company-specific distress. The most critical development is Fidelity's complete exit from Tango Therapeutics, a high-materiality signal that could trigger further selling. Conversely, an activist 13D filing at INNOVATE Corp. introduces a catalyst for potential value creation. Insider activity is limited, but the presence of healthcare-focused specialists like RA Capital and Perceptive Advisors holding significant passive stakes (5.7%-12.4%) in biotech suggests selective institutional conviction. The period-over-period data highlights a clear pattern of passive holders trimming positions, while a few specialized funds maintain or increase their focus, creating a bifurcated landscape of risk and opportunity.

1 high priority 49 medium 50 total filings
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US Activist Hedge Fund Institutional SEC 13D 13G — August 13, 2026

This digest of 50 Schedule 13G/D filings reveals a dominant theme of passive institutional accumulation, with Vanguard, BlackRock, and other index/quant funds increasing stakes in several mid- and large-cap names, including Tri Pointe Homes (+0.4% YoY to 10.2%), AAON (+1.5M shares), and NNN REIT (+4.9% share count). However, a notable bearish undercurrent exists: BlackRock trimmed its Lantheus Holdings stake (-0.3% to 5.6%), The Baupost Group reduced Radware holdings (-1.0pp to 5.1%), and Vanguard slightly decreased its Charter Communications position (-0.2pp to 5.9%). The most actionable development is the potential sale of Ardagh Metal Packaging (76% holder preparing for a sale), which could unlock significant value. Activist-adjacent signals are mixed: Saba Capital increased stakes in two closed-end funds (Blackstone Strategic Credit 2027 Term Fund to 7.8%, PIMCO Dynamic Income Strategy Fund to 7.7%) while declaring passive intent, creating a potential catalyst for fund restructuring. Insider activity is limited, but the Ardagh Holdings 13D filing signals a major corporate event. The SPAC sector shows continued passive interest from Magnetar Financial (three new 13G filings) and Mizuho (multiple SPACs), but with minimal conviction as Mizuho exited two SPACs entirely (0% stakes). Overall, the data suggests a market characterized by steady passive flows but selective institutional trimming, with the most alpha potential in event-driven situations like Ardagh Metal Packaging and Saba's CEF positions.

2 high priority 48 medium 50 total filings
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US Activist Hedge Fund Institutional SEC 13D 13G — August 12, 2026

The August 12, 2026, batch of 50 SEC filings is dominated by routine, passive institutional ownership updates (13G filings), with Norges Bank, AQR Capital Management, and Hotchkis & Wiley being the most active filers. The most significant actionable signals are two complete exits by activist-adjacent funds (Iroquois from XWELL, 683 Capital from Perceptive Capital Solutions) and one significant restructuring by HHCF in Katapult Holdings, converting preferred equity into debt and common stock. While most filings show no change in ownership or intent, the aggregate data reveals a strong, passive institutional presence in sectors like REITs (Kilroy, Federal Realty, Digital Realty, BXP) and large-cap tech (Atlassian, Workday, Duolingo). The key takeaway is a lack of new activist campaigns, but the exits and restructuring provide clear, actionable signals of changing investor conviction in specific names. The period-over-period data is limited, as most filings are amendments with no change or are initial filings, but the few changes (Vanguard increasing in H&R Block, Norges Bank shifting composition in New Oriental) offer subtle clues of institutional accumulation and rebalancing.

2 high priority 48 medium 50 total filings
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US Activist Hedge Fund Institutional SEC 13D 13G — August 11, 2026

This digest of 50 regulatory filings reveals a landscape dominated by passive institutional investors, with a few high-conviction activist and strategic transactions. The most critical development is the proposed acquisition of ReNew Energy Global plc by a consortium led by CPPIB and its founder at $7.02 per share, a high-materiality event with a tight deadline for the transaction agreement. Activist pressure is evident at Tivic Health Systems, where a major shareholder is demanding CEO termination and board changes as a condition for a $9 million investment. A notable trend is the accumulation of shares in closed-end funds, with SIT Investment Associates building a 29.9% stake in MFS Intermediate Income Trust, just under the 30% threshold. Conversely, several filings show complete exits or reductions, such as Hoak Public Equities exiting Turtle Beach Corp and Granahan Investment Management trimming its Digital Turbine position. The data also highlights a cluster of filings from M3 Partners, LP, which holds passive stakes across multiple small-cap financials, and Donald Smith & Co., which has established new positions in several value-oriented companies. Overall, the filings suggest a market with selective activist engagement, significant passive index and institutional flows, and a few high-stakes corporate control events.

8 high priority 42 medium 50 total filings