Black Diamond Therapeutics, Inc. (BDTX) Ownership
BDTX ownership summary
as of October 18, 2026- Institutions
- 72.6% of shares outstanding
- Insiders
- 0.66% of shares outstanding
- Shares outstanding
- 57.5M
- Float
- 52.5M shares available to trade
- Short interest
- 11.95% 4.8M shares short
- Days to cover
- 8.17 short interest down 7.2% vs prior month
- Institutions 72.57%
- Insiders 0.66%
- Other investors 26.77%
BDTX top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | NEA Management Company, LLC | 7.74% | 4.4M | $7.7M | — | June 30, 2026 |
| 2 | T. Rowe Price Investment Management,Inc. | 7.01% | 4.0M | $6.9M | −6.5M (−61.9%) | June 30, 2026 |
| 3 | BlackRock Inc | 6.82% | 3.9M | $6.7M | +2.8M (+253.9%) | June 30, 2026 |
| 4 | Acadian Asset Management LLC | 4.09% | 2.3M | $4.0M | — | June 30, 2026 |
| 5 | Vanguard Capital Management, LLC | 3.70% | 2.1M | $3.7M | +274,802 (+14.9%) | June 30, 2026 |
| 6 | Renaissance Technologies Corp | 3.42% | 2.0M | $3.4M | +318,647 (+19.4%) | June 30, 2026 |
| 7 | Defilade Capital Management, L.P. | 2.92% | 1.7M | $2.9M | +1.7M (0.0%) | June 30, 2026 |
| 8 | Dimensional Fund Advisors, Inc. | 2.38% | 1.4M | $2.3M | +63,720 (+4.9%) | June 30, 2026 |
| 9 | Geode Capital Management, LLC | 2.12% | 1.2M | $2.1M | +681,596 (+127.0%) | June 30, 2026 |
| 10 | Connor Clark & Lunn Inv Mgmt Ltd | 1.90% | 1.1M | $1.9M | +34,488 (+3.3%) | June 30, 2026 |
| 11 | Awm Investment Company Inc | 1.74% | 1.0M | $1.7M | +475,000 (+90.5%) | June 30, 2026 |
| 12 | Marshall Wace Asset Management Ltd | 1.56% | 897K | $1.5M | +60,336 (+7.2%) | June 30, 2026 |
| 13 | Bridgeway Capital Management, LLC | 1.38% | 791K | $1.4M | +67,957 (+9.4%) | June 30, 2026 |
| 14 | FMR Inc | 1.12% | 644K | $1.1M | +19,841 (+3.2%) | June 30, 2026 |
| 15 | Balyasny Asset Management LLC | 0.94% | 542K | $932,536 | +31,361 (+6.1%) | June 30, 2026 |
| 16 | State Street Corp | 0.91% | 525K | $903,022 | +311,500 (+145.9%) | June 30, 2026 |
| 17 | Bank of America Corp | 0.72% | 414K | $711,248 | +299,373 (+262.3%) | June 30, 2026 |
| 18 | Vanguard Portfolio Management, LLC | 0.71% | 407K | $700,167 | +313,894 (+336.9%) | June 30, 2026 |
| 19 | Northern Trust Corp | 0.64% | 365K | $628,478 | −99,314 (−21.4%) | June 30, 2026 |
| 20 | Bank of New York Mellon Corp | 0.55% | 319K | $548,272 | +129,615 (+68.5%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 16 holders added 7.6M shares and 2 cut 6.6M.
BDTX top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | T. Rowe Price Small-Cap Value | 3.58% | 2.1M | $3.5M | — | September 30, 2026 |
| 2 | Vanguard MStar Total Stk Mkt Idx Invest | 2.71% | 1.6M | $2.7M | — | August 31, 2026 |
| 3 | iShares Russell 2000 ETF | 2.12% | 1.2M | $2.1M | −14,016 (−1.1%) | September 30, 2026 |
| 4 | PPF Helix Biotechnology I USD | 1.20% | 691K | $1.2M | +227,000 (+48.9%) | June 30, 2026 |
| 5 | Fidelity Enhanced Small Cap Core ETF | 1.08% | 621K | $1.1M | +1,302 (+0.2%) | September 30, 2026 |
| 6 | Fidelity Small Cap Index | 0.89% | 513K | $882,566 | −632 (−0.1%) | July 31, 2026 |
| 7 | iShares U.S. Small-Cap Eq Fac ETF | 0.87% | 499K | $857,693 | — | September 30, 2026 |
| 8 | iShares Russell 2000 Value ETF | 0.81% | 468K | $804,590 | +710 (+0.2%) | September 30, 2026 |
| 9 | iShares Biotechnology ETF | 0.67% | 383K | $659,476 | −2,904 (−0.8%) | September 30, 2026 |
| 10 | Bridgeway Ultra-Small Company | 0.65% | 375K | $645,000 | +50,000 (+15.4%) | June 30, 2026 |
| 11 | DFA US Small Cap Value I | 0.59% | 341K | $586,897 | — | August 31, 2026 |
| 12 | Vanguard Russell 2000 ETF | 0.48% | 273K | $469,839 | +860 (+0.3%) | September 30, 2026 |
| 13 | EA Bridgeway Omni Small-Cap Value ETF | 0.47% | 272K | $468,275 | — | September 30, 2026 |
| 14 | Fidelity Extended Market Index | 0.45% | 258K | $444,560 | +22,382 (+9.5%) | August 31, 2026 |
| 15 | Dimensional US Small Cap Value ETF | 0.37% | 210K | $361,558 | — | September 24, 2026 |
| 16 | Northwestern Mutual Ser Small Cap Value | 0.32% | 183K | $314,022 | −19,029 (−9.4%) | June 30, 2026 |
| 17 | iShares Micro-Cap ETF | 0.26% | 152K | $261,679 | −1,049 (−0.7%) | September 30, 2026 |
| 18 | Schwab Small Cap Index | 0.20% | 114K | $195,774 | — | August 31, 2026 |
| 19 | BSF Systematic US Eq Abs Ret A2 USD | 0.16% | 95K | $162,647 | — | December 31, 2025 |
| 20 | Vanguard VIF Small Co Gr | 0.16% | 93K | $160,270 | — | June 30, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
BDTX insider transactions
latest 6| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2025-03-19 | Growth N V Biotech | Sell | $2.07 | 5,784,292 | $12.0M |
| 2023-10-17 | Growth N V Biotech | Buy | $2.34 | 400,000 | $936,000 |
| 2023-07-05 | Ali Behbahani | Buy | $5.00 | 1,000,000 | $5.0M |
| 2023-06-30 | Growth N V Biotech | Buy | $5.00 | 1,000,000 | $5.0M |
| 2023-06-27 | David M Epstein | Sell | $6.70 | 25,000 | $167,500 |
| 2023-06-27 | Growth N V Biotech | Buy | $5.49 | 1,740,000 | $9.6M |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
BDTX shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns BDTX
Institutional investors own 72.6% of Black Diamond Therapeutics's shares and insiders 0.66%. The largest holder is NEA Management Company, LLC with 7.74% of the shares (4.4M), as of June 30, 2026. Among the top 20 institutions, 16 added shares and 2 reduced their stake in the latest filings. Short interest is 11.95% of the float, or 8.17 days of average trading volume. The share count rose 309.2% since 2018.
Related: BDTX analyst forecast, BDTX key metrics. See the BDTX stock overview for the latest quote and news.
BDTX ownership FAQ
Who owns the most Black Diamond Therapeutics stock?
The largest shareholders of Black Diamond Therapeutics are NEA Management Company, LLC (7.74%), T. Rowe Price Investment Management,Inc. (7.01%), BlackRock Inc (6.82%), Acadian Asset Management LLC (4.09%), Vanguard Capital Management, LLC (3.70%).
What percentage of Black Diamond Therapeutics is owned by institutions?
Institutions hold 72.6% of Black Diamond Therapeutics's shares outstanding; insiders hold 0.66%.
Which funds own Black Diamond Therapeutics?
The largest fund holders of Black Diamond Therapeutics are T. Rowe Price Small-Cap Value (3.58%), Vanguard MStar Total Stk Mkt Idx Invest (2.71%), iShares Russell 2000 ETF (2.12%), PPF Helix Biotechnology I USD (1.20%), Fidelity Enhanced Small Cap Core ETF (1.08%).
What is Black Diamond Therapeutics's short interest?
4.8M shares of Black Diamond Therapeutics were sold short, 11.95% of the float; at the average daily volume it would take 8.17 days to cover.
Are insiders buying or selling Black Diamond Therapeutics?
Of the latest 6 reported insider transactions in Black Diamond Therapeutics (since June 27, 2023), 4 were purchases and 2 were sales.
How many shares of Black Diamond Therapeutics are outstanding?
Black Diamond Therapeutics has 57.5M shares outstanding, of which 52.5M are in the public float.