Attovia Therapeutics, Inc.
ATTO institutional ownership changes in Q3 2026: 17 institutions opened or added positions, 0 trimmed or exited. ATTO (Attovia Therapeutics, Inc.) is held by 17 institutional investors as of Q3 2026. Top institutional shareholders: Marshall Wace, LLP ($15.4M), Vanguard Capital Management LLC ($13.4M), Federated Hermes, Inc. ($12M). Institutions were buying, on balance.
No verdict yet — fewer than 2 funds hold ATTO.
Top Holders
| Action | ||||||
|---|---|---|---|---|---|---|
New | 898,980 | $15.4M | 0.0% | — | 39 | |
New | 782,012 | $13.4M | 0.0% | — | 39 | |
New | 700,000 | $12M | 0.0% | -7.76% | 39 | |
New | 323,669 | $5.5M | 0.0% | -7.76% | 37 | |
New | 265,397 | $4.5M | 0.0% | — | 37 | |
New | 206,176 | $3.5M | 0.0% | -7.76% | 37 | |
New | 183,751 | $3.1M | 0.0% | -7.76% | 37 | |
New | 109,177 | $1.9M | 0.0% | — | 36 | |
New | 42,725 | $732,307 | 0.0% | -7.76% | 34 | |
New | 38,451 | $659,050 | 0.0% | — | 37 | |
New | 30,868 | $529,000 | 0.0% | — | 33 | |
New | 24,250 | $415,645 | 0.0% | -7.76% | 37 | |
New | 20,495 | $351,284 | 0.0% | — | 36 | |
New | 15,107 | $258,934 | 0.0% | — | 32 | |
New | 6,602 | $113,158 | 0.0% | — | 30 | |
New | 1,237 | $21,202 | 0.0% | -7.76% | 29 | |
New | 180 | $3,115 | 0.0% | -7.76% | 20 |
| Insider | Trade | Traded |
|---|---|---|
| GOLDMAN SACHS GROUP INC | C 2.0M sh | |
| GOLDMAN SACHS GROUP INC | C 478K sh | |
| GOLDMAN SACHS GROUP INC | Buy $8.5M | |
| WALSH COLIN | Buy $8.5M | |
| WALSH COLIN | C 2.0M sh | |
| WALSH COLIN | C 478K sh | |
| GOLDMAN SACHS GROUP INC | Buy $1.8M | |
| WALSH COLIN | Buy $1.8M | |
| GOLDMAN SACHS GROUP INC | Sell $22K | |
| WALSH COLIN | Sell $22K |
| Filer | Stake | Filed |
|---|---|---|
| GOLDMAN SACHS GROUP INC | 6.7% | |
| Alamar HoldCo, LLC | 7.1% | |
| Deep Track Capital, LP | 7.5% | |
| Frazier Life Sciences Public Fund, L.P. | 1.7% |
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Questions investors ask about ATTO
Who owns ATTO?
17 institutional investors held ATTO on September 30, 2026, led by Marshall Wace, LLP ($15.4M), Vanguard Capital Management LLC ($13.4M) and Federated Hermes, Inc. ($12M).
How many hedge funds hold ATTO?
17 institutional investors reported ATTO in their 13F filings for the quarter ended September 30, 2026, $62.5M in all.
Are institutions buying or selling ATTO?
Buying, on balance. In Q3 2026, 17 institutions opened or added to positions in ATTO and 0 institutions trimmed or exited.
Data sourced from four public-disclosure sources: SEC 13F, Form 4, 13D/13G, and House/Senate STOCK Act disclosures. Not financial advice. Full disclaimer