171 tracked 13F filers disclose a position in TMC as of the latest SEC 13F filings, a combined $262.8M 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 | FIRST MANHATTAN CO. LLC. | $71.5M | 15.3M | —Held | Q1 2026 | |
| 2 | JANE STREET GROUP, LLC | $32.5M | 7.0M | ▲+121% Added · +3.8M sh | Q1 2026 | |
| 3 | CITADEL ADVISORS LLC | $16.9M | 3.6M | ▲14× Added · +3.4M sh | Q1 2026 | |
| 4 | MILLENNIUM MANAGEMENT LLC | $14.3M | 3.1M | ▲+103% Added · +1.6M sh | Q1 2026 | |
| 5 | Baird Financial Group, Inc. | $11.5M | 2.5M | ▼−4.5% Reduced · −118K sh | Q1 2026 | |
| 6 | MARSHALL WACE, LLP | $11.3M | 2.4M | ▲133× Added · +2.4M sh | Q1 2026 | |
| 7 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $9.3M | 2.0M | ▼−59% Reduced · −2.8M sh | Q1 2026 | |
| 8 | TUDOR INVESTMENT CORP ET AL | $7.6M | 1.6M | ▲+133% Added · +932K sh | Q1 2026 | |
| 9 | UBS Group AG | $6.3M | 1.3M | ▲+151% Added · +811K sh | Q1 2026 | |
| 10 | BlackRock, Inc. | $5.8M | 1.2M | ▲+3.2% Added · +39K sh | Q1 2026 | |
| 11 | STATE STREET CORP | $5.1M | 1.1M | ▲+16% Added · +157K sh | Q2 2026 | |
| 12 | GROUP ONE TRADING LLC | $4.4M | 940K | ▲+238% Added · +663K sh | Q1 2026 | |
| 13 | GOLDMAN SACHS GROUP INC | $3.8M | 820K | ▲+21% Added · +142K sh | Q1 2026 | |
| 14 | RENAISSANCE TECHNOLOGIES LLC | $3.4M | 730K | ▲New +730K sh | Q1 2026 | |
| 15 | Legend Capital Advisors LLC | $3.0M | 645K | ▲+778% Added · +572K sh | Q1 2026 | |
| 16 | Mirador Capital Partners LP | $2.7M | 614K | ▲+8.3% Added · +47K sh | Q2 2026 | |
| 17 | MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $2.8M | 598K | ▲+178% Added · +383K sh | Q1 2026 | |
| 18 | VANGUARD PORTFOLIO MANAGEMENT LLC | $2.8M | 590K | →First observed position No prior filed position | Q1 2026 | |
| 19 | Aquatic Capital Management LLC | $2.7M | 572K | ▲New +572K sh | Q1 2026 | |
| 20 | Swiss National Bank | $1.9M | 409K | ▲+1.7% Added · +7K sh | Q1 2026 | |
| 21 | GEODE CAPITAL MANAGEMENT, LLC | $1.7M | 370K | ▼−0.3% Reduced · −1K sh | Q1 2026 | |
| 22 | MORGAN STANLEY | $1.7M | 357K | ▼−52% Reduced · −390K sh | Q1 2026 | |
| 23 | Walleye Capital LLC | $1.5M | 345K | ▼−71% Reduced · −852K sh | Q2 2026 | |
| 24 | TWO SIGMA INVESTMENTS, LP | $1.6M | 339K | ▲+33% Added · +84K sh | Q1 2026 | |
| 25 | UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME | $1.5M | 328K | ▲New +328K 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, 11 funds opened a new position in TMC and 23 added to an existing one, while 9 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 |
|---|---|---|
| META PLATFORMS INC-CLASS AMETA | 84 funds | $42.3B |
| MICROSOFT CORPMSFT | 83 funds | $95.9B |
| ALPHABET INC-CL AGOOGL | 83 funds | $49.6B |
| BROADCOM INCAVGO | 82 funds | $54.2B |
| JPMORGAN CHASE & COJPM | 82 funds | $19.8B |
| NVIDIA CORPNVDA | 81 funds | $142.7B |
| APPLE INCAAPL | 81 funds | $102.4B |
| AMAZON.COM INCAMZN | 81 funds | $75.3B |
| VISA INC-CLASS A SHARESV | 81 funds | $21.1B |
| COSTCO WHOLESALE CORPCOST | 81 funds | $15.9B |
| TESLA INCTSLA | 80 funds | $29.9B |
| BANK OF AMERICA CORPBAC | 80 funds | $11.6B |
Ranked by how many of TMC's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Jul 1, 2026 | Allseas Group S.A. | 10% Owner | Buy (P) | 7.3M | — |
| Jun 2, 2026 | May Brendan | Director | Sell (S) | 21K | $133K |
| Mar 26, 2026 | Shesky Craig | Chief Financial Officer | Sell (S) | 215K | $976K |
| Mar 25, 2026 | Shesky Craig | Chief Financial Officer | Sell (S) | 78K | $358K |
| Mar 24, 2026 | Shesky Craig | Chief Financial Officer | Sell (S) | 52K | $246K |
| Dec 2, 2025 | O'Sullivan Anthony | Chief Development Officer | Sell (S) | 50K | $339K |
| Nov 28, 2025 | O'Sullivan Anthony | Chief Development Officer | Sell (S) | 50K | $326K |
| Sep 22, 2025 | ILVES Erika | Chief Strategy Officer | Sell (S) | 1.6M | $9.2M |
| Aug 26, 2025 | O'Sullivan Anthony | Chief Development Officer | Sell (S) | 250K | $1.3M |
| Jun 26, 2025 | May Brendan | Director | Sell (S) | 44K | $326K |
| Jun 25, 2025 | May Brendan | Director | Sell (S) | 25K | $195K |
| Jun 20, 2025 | O'Sullivan Anthony | Chief Development Officer | Sell (S) | 185K | $1.3M |
| Class | 13F holders | Value held |
|---|---|---|
| TMCthis pageStock | 171 funds | $262.8M |
| TMCWW*W EXP 09/09/202 | 9 funds | $4.3M |
Same issuer, multiple share classes. The consensus leaderboards count this company once across all classes; this is the per-class detail.
Connected entities for TMC
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/TMC/capital-change-brief"
Use Arkolith's capital_change_brief for TMC. 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 TMC. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.