Fulcrum Therapeutics
FULC · NASDAQ
$3.72+$0.02 (+0.54%)TodayMarket closed ·
Prev close $3.70
Who owns FULC
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 62.4% of FULC’s shares.
- Tang Capital Management, LLC10.4%
- EcoR1 Capital, LLC9.8%
- BlackRock Institutional Trust Company, N.A.8.8%
- Nantahala Capital Management, LLC8.2%
- Next 6 largest institutions25.1%
- All other shareholders37.6%
| Holder | Shares | % of shares |
|---|---|---|
| Tang Capital Management, LLC | 6.91M | 10.38% |
| EcoR1 Capital, LLC | 6.55M | 9.83% |
| BlackRock Institutional Trust Company, N.A. | 5.89M | 8.84% |
| Nantahala Capital Management, LLC | 5.48M | 8.22% |
| Montanova Capital, LLC | 3.68M | 5.52% |
| D. E. Shaw & Co., L.P. | 3.04M | 4.57% |
| Citadel Advisors LLC | 2.70M | 4.06% |
| Vanguard Capital Management, LLC | 2.70M | 4.05% |
| BlackRock Financial Management, Inc. | 2.40M | 3.60% |
| Jane Street Capital, L.L.C. | 2.22M | 3.33% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| Vanguard Total Stock Market Index Fund | 2.07M | 3.11% |
| iShares Russell 2000 ETF | 1.55M | 2.32% |
| abrdn Life Sciences Investors | 1.52M | 2.28% |
| BlackRock Advantage Small Cap Core Fund | 1.42M | 2.14% |
| State Street SPDR S&P Pharmaceuticals ETF | 1.06M | 1.58% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders bought $1.49M (6 trades) of FULC on the open market, with no sales.
| Insider | Type | Shares | Value |
|---|---|---|---|
| TANG KEVIN | Buy | 50.95K | $179.33K |
| TANG KEVIN | Buy | 116.67K | $415.35K |
| TANG KEVIN | Buy | 107.38K | $382.26K |
| TANG KEVIN | Buy | 75.95K | $271.91K |
| TANG KEVIN | Buy | 53.65K | $191.00K |
| TANG KEVIN | Buy | 12.97K | $45.90K |
| Banks Sonja | Award | 32.00K | — |
| Ezekowitz Alan | Award | 32.00K | — |
| Hill Colin | Award | 32.00K | — |
| Haviland Kate | Award | 32.00K | — |
Short interest
Settled Sep 30, 2026
- Shares short
- 7.11M
- Days to cover
- 4.48
- % of shares outstanding
- 10.67%
- Average daily volume
- 1.59M
- Change since last report
- −1.2%
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