22 tracked 13F filers disclose a position in ACOG as of the latest SEC 13F filings, a combined $55.9M 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 | Opaleye Management Inc. | $14.1M | 2.6M | ▲+24% Added · +491K sh | Q1 2026 | |
| 2 | Solas Capital Management, LLC | $10.6M | 1.9M | ▼−2.2% Reduced · −43K sh | Q1 2026 | |
| 3 | AWM Investment Company, Inc. | $9.2M | 1.7M | —Held | Q1 2026 | |
| 4 | Cable Car Capital, LP | $7.6M | 1.4M | ▲+30% Added · +322K sh | Q1 2026 | |
| 5 | Ikarian Capital, LLC | $5.8M | 1.1M | —Held | Q1 2026 | |
| 6 | SPHERA FUNDS MANAGEMENT LTD. | $3.1M | 568K | —Held | Q1 2026 | |
| 7 | Alyeska Investment Group, L.P. | $2.0M | 365K | —Held | Q1 2026 | |
| 8 | BOOTHBAY FUND MANAGEMENT, LLC | $1.4M | 256K | —Held | Q1 2026 | |
| 9 | CANTOR FITZGERALD, L. P. | $1.0M | 189K | ▲+15% Added · +25K sh | Q1 2026 | |
| 10 | CITADEL ADVISORS LLC | $492K | 90K | ▼−24% Reduced · −29K sh | Q1 2026 | |
| 11 | TUDOR INVESTMENT CORP ET AL | $338K | 62K | —Held | Q1 2026 | |
| 12 | BERKSHIRE ASSET MANAGEMENT LLC/PA | $109K | 20K | —Held | Q1 2026 | |
| 13 | TWO SIGMA INVESTMENTS, LP | $87K | 16K | ▼−72% Reduced · −42K sh | Q1 2026 | |
| 14 | GEODE CAPITAL MANAGEMENT, LLC | $66K | 12K | —Held | Q1 2026 | |
| 15 | RAYMOND JAMES FINANCIAL INC | $55K | 10K | ▲New +10K sh | Q1 2026 | |
| 16 | NATIONAL BANK OF CANADA /FI/ | $28K | 5K | —Held | Q1 2026 | |
| 17 | Allworth Financial LP | $4K | 750 | —Held | Q1 2026 | |
| 18 | ROYAL BANK OF CANADA | $4K | 679 | ▲+457% Added · +557 sh | Q1 2026 | |
| 19 | UBS Group AG | $2K | 438 | ▼−53% Reduced · −489 sh | Q1 2026 | |
| 20 | Steward Partners Investment Advisory, LLC | $1K | 200 | —Held | Q1 2026 | |
| 21 | JONES FINANCIAL COMPANIES LLLP | $508 | 100 | ▲New +100 sh | Q1 2026 | |
| 22 | HARBOUR INVESTMENTS, INC. | $25 | 4 | ▲New +4 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, 1 fund opened a new position in ACOG and 2 added to an existing one, while 3 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 |
|---|---|---|
| AMAZON.COM INCAMZN | 7 funds | $3.4B |
| MICRON TECHNOLOGY INCMU | 7 funds | $2.6B |
| MICROSOFT CORPMSFT | 7 funds | $2.1B |
| TAIWAN SEMICONDUCTOR-SP ADRTSM | 7 funds | $1.5B |
| BROADCOM INCAVGO | 7 funds | $1.4B |
| JPMORGAN CHASE & COJPM | 7 funds | $1.4B |
| UNITEDHEALTH GROUP INCUNH | 7 funds | $861.3M |
| GENERAL ELECTRICGE | 7 funds | $759.2M |
| MORGAN STANLEYMS | 7 funds | $759.2M |
| CHEVRON CORPCVX | 7 funds | $726.0M |
| CITIGROUP INCC | 7 funds | $660.0M |
| MASTERCARD INC - AMA | 7 funds | $637.7M |
Ranked by how many of ACOG's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Jun 26, 2026 | Opaleye Management Inc. | 10% Owner | Buy (P) | 152K | $975K |
| Jun 25, 2026 | Opaleye Management Inc. | 10% Owner | Buy (P) | 197 | $1K |
| Jun 15, 2026 | Opaleye Management Inc. | 10% Owner | Buy (P) | 5K | $27K |
| Jun 12, 2026 | Opaleye Management Inc. | 10% Owner | Buy (P) | 273 | $2K |
| Jun 11, 2026 | Opaleye Management Inc. | 10% Owner | Buy (P) | 3K | $17K |
| Jun 10, 2026 | Opaleye Management Inc. | 10% Owner | Buy (P) | 6K | $35K |
| Jun 9, 2026 | Opaleye Management Inc. | 10% Owner | Buy (P) | 25K | $149K |
| Jun 5, 2026 | Opaleye Management Inc. | 10% Owner | Buy (P) | 10K | $59K |
| May 29, 2026 | Opaleye Management Inc. | 10% Owner | Buy (P) | 71K | $416K |
| May 28, 2026 | Opaleye Management Inc. | 10% Owner | Buy (P) | 2K | $12K |
| May 27, 2026 | Opaleye Management Inc. | 10% Owner | Buy (P) | 1K | $7K |
| May 21, 2026 | Opaleye Management Inc. | 10% Owner | Buy (P) | 16K | $91K |
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/ACOG/capital-change-brief"
Use Arkolith's capital_change_brief for ACOG. 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 ACOG. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.