81 tracked 13F filers disclose a position in TUSK as of the latest SEC 13F filings, a combined $86.5M in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | WEXFORD CAPITAL LP | $54.1M | 22.1M | ▼−0.1% Reduced · −28K sh | Q1 2026 | |
| 2 | ADAGE CAPITAL PARTNERS GP, L.L.C. | $11.2M | 4.6M | —Held | Q1 2026 | |
| 3 | BlackRock, Inc. | $3.6M | 1.5M | ▼−1.2% Reduced · −18K sh | Q1 2026 | |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | $2.0M | 819K | →First observed position No prior filed position | Q1 2026 | |
| 5 | Peapod Lane Capital LLC | $2.6M | 808K | ▲+35% Added · +208K sh | Q2 2026 | |
| 6 | DIMENSIONAL FUND ADVISORS LP | $1.7M | 686K | ▼−1.9% Reduced · −13K sh | Q1 2026 | |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | $1.5M | 611K | ▲+4.3% Added · +25K sh | Q1 2026 | |
| 8 | STATE STREET CORP | $1.0M | 422K | ▲+3.3% Added · +13K sh | Q1 2026 | |
| 9 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | $814K | 332K | ▼−19% Reduced · −78K sh | Q1 2026 | |
| 10 | CITADEL ADVISORS LLC | $812K | 331K | ▲+51% Added · +111K sh | Q1 2026 | |
| 11 | Empowered Funds, LLC | $591K | 241K | ▲+10% Added · +22K sh | Q1 2026 | |
| 12 | RENAISSANCE TECHNOLOGIES LLC | $568K | 232K | ▲+25% Added · +46K sh | Q1 2026 | |
| 13 | GOLDMAN SACHS GROUP INC | $548K | 223K | ▲+148% Added · +134K sh | Q1 2026 | |
| 14 | NORTHERN TRUST CORP | $458K | 187K | ▲+11% Added · +19K sh | Q1 2026 | |
| 15 | VANGUARD FIDUCIARY TRUST CO | $417K | 170K | →First observed position No prior filed position | Q1 2026 | |
| 16 | LOS ANGELES CAPITAL MANAGEMENT LLC | $400K | 163K | ▲New +163K sh | Q1 2026 | |
| 17 | Boston Partners | $378K | 154K | ▲New +154K sh | Q1 2026 | |
| 18 | MORGAN STANLEY | $374K | 153K | ▼−48% Reduced · −140K sh | Q1 2026 | |
| 19 | VANGUARD PORTFOLIO MANAGEMENT LLC | $343K | 140K | →First observed position No prior filed position | Q1 2026 | |
| 20 | Bank of New York Mellon Corp | $325K | 133K | ▼−0.1% Reduced · −135 sh | Q1 2026 | |
| 21 | Centiva Capital, LP | $272K | 111K | ▲+169% Added · +70K sh | Q1 2026 | |
| 22 | Marquette Asset Management, LLC | $357K | 110K | ▲New +110K sh | Q2 2026 | |
| 23 | STIFEL FINANCIAL CORP | $259K | 106K | —Held | Q1 2026 | |
| 24 | OSAIC HOLDINGS, INC. | $177K | 72K | ▼−9.1% Reduced · −7K sh | Q1 2026 | |
| 25 | Russell Investments Group, Ltd. | $167K | 68K | ▼−73% Reduced · −179K sh | Q1 2026 |
Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
Last quarter, 15 funds opened a new position in TUSK and 8 added to an existing one, while 7 reduced and 0 exited entirely — based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 20 funds | $5.2B |
| ALPHABET INC-CL CGOOG | 20 funds | $2.8B |
| ELI LILLY & COLLY | 20 funds | $1.8B |
| COSTCO WHOLESALE CORPCOST | 20 funds | $1.4B |
| VISA INC-CLASS A SHARESV | 20 funds | $1.3B |
| LAM RESEARCH CORPLRCX | 20 funds | $971.2M |
| PALANTIR TECHNOLOGIES INC-APLTR | 20 funds | $936.2M |
| ORACLE CORPORCL | 20 funds | $915.3M |
| NETFLIX INCNFLX | 20 funds | $786.9M |
| UNITED AIRLINES HOLDINGS INCUAL | 20 funds | $677.5M |
| CARDINAL HEALTH INCCAH | 20 funds | $650.6M |
| BRISTOL-MYERS SQUIBB COBMY | 20 funds | $631.5M |
Ranked by how many of TUSK's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Jun 17, 2026 | WEXFORD CAPITAL LP | Chief Business Officer, Director, 10% Owner | Buy (P) | 4.0M | $10.5M |
| Jun 12, 2026 | Amron Arthur H | Director | Buy (P) | 2K | $7K |
| Jun 11, 2026 | Amron Arthur H | Director | Buy (P) | 3K | $8K |
| May 28, 2026 | Amron Arthur H | Director | Buy (P) | 3K | $10K |
| May 26, 2026 | Amron Arthur H | Director | Buy (P) | 3K | $8K |
| Dec 11, 2025 | Amron Arthur H | Director | Buy (P) | 10K | $19K |
| May 22, 2025 | SMITH ARTHUR L | Director | Sell (S) | 20K | $50K |
| May 20, 2025 | SMITH ARTHUR L | Director | Sell (S) | 50K | $126K |
| May 19, 2025 | SMITH ARTHUR L | Director | Sell (S) | 15K | $37K |
| Dec 12, 2024 | Amron Arthur H | Director | Buy (P) | 1K | $3K |
| Nov 25, 2024 | Booker Corey J. | Director | Sell (S) | 15K | $52K |
| Nov 22, 2024 | Booker Corey J. | Director | Sell (S) | 10K | $34K |
This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/TUSK/capital-change-brief"
Use Arkolith's capital_change_brief for TUSK. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for TUSK. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.