209 tracked 13F filers disclose a position in KOS as of the latest SEC 13F filings, a combined $1.1B 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 | BlackRock, Inc. | $131.9M | 47.5M | ▲+1.3% Added · +611K sh | Q1 2026 | |
| 2 | STATE STREET CORP | $78.5M | 28.2M | ▲+38% Added · +7.8M sh | Q1 2026 | |
| 3 | D. E. Shaw & Co., Inc. | $56.7M | 20.4M | ▲+242% Added · +14.4M sh | Q1 2026 | |
| 4 | HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC | $55.7M | 20.1M | ▼−0.3% Reduced · −59K sh | Q1 2026 | |
| 5 | TWO SIGMA INVESTMENTS, LP | $51.9M | 18.7M | ▲+385% Added · +14.8M sh | Q1 2026 | |
| 6 | Grantham, Mayo, Van Otterloo & Co. LLC | $50.9M | 18.3M | ▼−47% Reduced · −16.5M sh | Q1 2026 | |
| 7 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $39.3M | 14.1M | ▲+17% Added · +2.1M sh | Q1 2026 | |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | $35.4M | 12.7M | ▲+13% Added · +1.4M sh | Q1 2026 | |
| 9 | MILLENNIUM MANAGEMENT LLC | $35.1M | 12.6M | ▼−15% Reduced · −2.2M sh | Q1 2026 | |
| 10 | JANE STREET GROUP, LLC | $32.6M | 11.7M | ▲+27% Added · +2.5M sh | Q1 2026 | |
| 11 | GOLDMAN SACHS GROUP INC | $25.7M | 9.3M | ▲+37% Added · +2.5M sh | Q1 2026 | |
| 12 | VANGUARD PORTFOLIO MANAGEMENT LLC | $24.0M | 8.6M | →First observed position No prior filed position | Q1 2026 | |
| 13 | DAVIDSON KEMPNER CAPITAL MANAGEMENT LP | $23.4M | 8.4M | ▲New +8.4M sh | Q1 2026 | |
| 14 | FIRST TRUST ADVISORS LP | $21.4M | 7.7M | ▲+9.2% Added · +646K sh | Q1 2026 | |
| 15 | DIMENSIONAL FUND ADVISORS LP | $19.7M | 7.1M | ▲+20% Added · +1.2M sh | Q1 2026 | |
| 16 | M&G Plc | $21.1M | 7.0M | ▼−20% Reduced · −1.7M sh | Q1 2026 | |
| 17 | VANGUARD CAPITAL MANAGEMENT LLC | $17.9M | 6.4M | →First observed position No prior filed position | Q1 2026 | |
| 18 | Russell Investments Group, Ltd. | $16.3M | 5.9M | ▼−0.5% Reduced · −28K sh | Q1 2026 | |
| 19 | MORGAN STANLEY | $16.2M | 5.8M | ▲+24% Added · +1.1M sh | Q1 2026 | |
| 20 | BANK OF AMERICA CORP /DE/ | $15.4M | 5.5M | ▲+44% Added · +1.7M sh | Q1 2026 | |
| 21 | RENAISSANCE TECHNOLOGIES LLC | $14.8M | 5.3M | ▲+224% Added · +3.7M sh | Q1 2026 | |
| 22 | UBS Group AG | $13.4M | 4.8M | ▼−22% Reduced · −1.3M sh | Q1 2026 | |
| 23 | Boston Partners | $13.3M | 4.8M | ▲New +4.8M sh | Q1 2026 | |
| 24 | CITADEL ADVISORS LLC | $12.4M | 4.5M | ▼−20% Reduced · −1.1M sh | Q1 2026 | |
| 25 | NORTHERN TRUST CORP | $11.8M | 4.2M | ▲+15% Added · +561K 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, 27 funds opened a new position in KOS and 17 added to an existing one, while 11 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 | 88 funds | $33.8B |
| UNITEDHEALTH GROUP INCUNH | 86 funds | $4.7B |
| BROADCOM INCAVGO | 85 funds | $17.8B |
| META PLATFORMS INC-CLASS AMETA | 85 funds | $16.8B |
| ORACLE CORPORCL | 85 funds | $3.2B |
| NVIDIA CORPNVDA | 84 funds | $46.9B |
| AMAZON.COM INCAMZN | 84 funds | $26.2B |
| ELI LILLY & COLLY | 84 funds | $9.3B |
| MICRON TECHNOLOGY INCMU | 84 funds | $7.2B |
| ALPHABET INC-CL AGOOGL | 83 funds | $22.9B |
| ADVANCED MICRO DEVICESAMD | 83 funds | $4.8B |
| APPLE INCAAPL | 82 funds | $40.0B |
Ranked by how many of KOS's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Jul 2, 2026 | INGLIS ANDREW G | Chairman and CEO, Director | Sell (S) | 86K | $176K |
| Jul 2, 2026 | Shah Nealesh D. | SVP and CFO | Sell (S) | 46K | $94K |
| Jul 2, 2026 | Marion Josh R. | SVP and General Counsel | Sell (S) | 25K | $51K |
| Jul 2, 2026 | Glass Ronald W. | VP & Chief Accounting Officer | Sell (S) | 12K | $25K |
| May 28, 2026 | Franklin Roy A. | Director | Sell (S) | 43K | $119K |
| May 27, 2026 | Grant John Douglas Kelso | Director | Sell (S) | 43K | $119K |
| May 27, 2026 | Sterin Steven | Director | Sell (S) | 39K | $105K |
| Mar 10, 2026 | INGLIS ANDREW G | Chairman and CEO, Director | Buy (P) | 316K | $600K |
| Mar 10, 2026 | Shah Nealesh D. | SVP and CFO | Buy (P) | 158K | $300K |
| Mar 10, 2026 | STICE J MICHAEL | Director | Buy (P) | 53K | $100K |
| Mar 10, 2026 | Ogunlesi Adebayo O. | Director | Buy (P) | 3.2M | $6.0M |
| Feb 4, 2026 | Marion Josh R. | SVP and General Counsel | Sell (S) | 3K | $5K |
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/KOS/capital-change-brief"
Use Arkolith's capital_change_brief for KOS. 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 KOS. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.