22 tracked 13F filers disclose a position in COSM as of the latest SEC 13F filings, a combined $387K 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 | RENAISSANCE TECHNOLOGIES LLC | $124K | 391K | ▲+17% Added · +56K sh | Q1 2026 | |
| 2 | GEODE CAPITAL MANAGEMENT, LLC | $52K | 282K | ▼−11% Reduced · −36K sh | Q2 2026 | |
| 3 | BlackRock, Inc. | $85K | 268K | —Held | Q1 2026 | |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | $44K | 140K | →First observed position No prior filed position | Q1 2026 | |
| 5 | VANGUARD FIDUCIARY TRUST CO | $30K | 96K | →First observed position No prior filed position | Q1 2026 | |
| 6 | STATE STREET CORP | $8K | 45K | —Held | Q2 2026 | |
| 7 | XTX Topco Ltd | $13K | 40K | ▼−59% Reduced · −59K sh | Q1 2026 | |
| 8 | Sassicaia Capital Advisers LLC | $7K | 36K | ▲New +36K sh | Q2 2026 | |
| 9 | NORTHERN TRUST CORP | $7K | 21K | —Held | Q1 2026 | |
| 10 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $6K | 18K | ▲+46% Added · +6K sh | Q1 2026 | |
| 11 | KESTRA PRIVATE WEALTH SERVICES, LLC | $2K | 13K | ▲New +13K sh | Q2 2026 | |
| 12 | UBS Group AG | $4K | 13K | ▲+248% Added · +9K sh | Q1 2026 | |
| 13 | NATIONAL BANK OF CANADA /FI/ | $2K | 6K | —Held | Q1 2026 | |
| 14 | SIMPLEX TRADING, LLC | $1K | 4K | ▼−40% Reduced · −3K sh | Q1 2026 | |
| 15 | GROUP ONE TRADING LLC | $753 | 2K | ▼−0.8% Reduced · −19 sh | Q1 2026 | |
| 16 | Allworth Financial LP | $394 | 1K | ▲New +1K sh | Q1 2026 | |
| 17 | CITIGROUP INC | $314 | 990 | ▲New +990 sh | Q1 2026 | |
| 18 | Tower Research Capital LLC (TRC) | $239 | 755 | ▼−3.6% Reduced · −28 sh | Q1 2026 | |
| 19 | SBI Securities Co., Ltd. | $55 | 299 | ▲+167% Added · +187 sh | Q2 2026 | |
| 20 | WELLS FARGO & COMPANY/MN | $13 | 40 | —Held | Q1 2026 | |
| 21 | VALLEY NATIONAL ADVISERS INC | $1 | 1 | ▲New +1 sh | Q2 2026 | |
| 22 | Silicon Valley Capital Partners | $0 | 1 | ▲New +1 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, 3 funds opened a new position in COSM and 2 added to an existing one, while 2 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 |
|---|---|---|
| NVIDIA CORPNVDA | 8 funds | $4.3B |
| MICRON TECHNOLOGY INCMU | 8 funds | $2.5B |
| TESLA INCTSLA | 8 funds | $1.0B |
| SANDISK CORPSNDK | 8 funds | $1.0B |
| INTEL CORPINTC | 8 funds | $662.4M |
| ADVANCED MICRO DEVICESAMD | 8 funds | $296.2M |
| LAM RESEARCH CORPLRCX | 8 funds | $288.6M |
| ISHARES MSCI SOUTH KOREA ETFEWY | 8 funds | $85.7M |
| ASTERA LABS INCALAB | 8 funds | $60.9M |
| APPLE INCAAPL | 7 funds | $2.4B |
| TAIWAN SEMICONDUCTOR-SP ADRTSM | 7 funds | $1.6B |
| PALANTIR TECHNOLOGIES INC-APLTR | 7 funds | $1.4B |
Ranked by how many of COSM's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Feb 12, 2026 | Siokas Grigorios | Chief Executive Officer, Director, 10% Owner | Buy (P) | 389K | $144K |
| Feb 11, 2026 | Siokas Grigorios | Chief Executive Officer, Director, 10% Owner | Buy (P) | 291K | $119K |
| Jan 23, 2026 | Siokas Grigorios | Chief Executive Officer, Director, 10% Owner | Buy (P) | 90K | $45K |
| Jan 20, 2026 | Siokas Grigorios | Chief Executive Officer, Director, 10% Owner | Buy (P) | 353K | $177K |
| Jan 14, 2026 | Siokas Grigorios | Chief Executive Officer, Director, 10% Owner | Buy (P) | 493K | $222K |
| Jan 12, 2026 | Siokas Grigorios | Chief Executive Officer, Director, 10% Owner | Buy (P) | 113K | $57K |
| Jan 8, 2026 | Siokas Grigorios | Chief Executive Officer, Director, 10% Owner | Buy (P) | 156K | $81K |
| Jan 7, 2026 | Siokas Grigorios | Chief Executive Officer, Director, 10% Owner | Buy (P) | 125K | $65K |
| Jan 6, 2026 | Siokas Grigorios | Chief Executive Officer, Director, 10% Owner | Buy (P) | 134K | $72K |
| Dec 19, 2025 | Siokas Grigorios | Chief Executive Officer, Director, 10% Owner | Buy (P) | 88K | $43K |
| Dec 15, 2025 | Siokas Grigorios | Chief Executive Officer, Director, 10% Owner | Buy (P) | 168K | $71K |
| Nov 28, 2025 | Siokas Grigorios | Chief Executive Officer, Director, 10% Owner | Buy (P) | 76K | $49K |
Connected entities for COSM
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/COSM/capital-change-brief"
Use Arkolith's capital_change_brief for COSM. 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 COSM. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.