Corbus Pharmaceuticals Holdings, Inc. (CRBP) Ownership
CRBP ownership summary
as of October 17, 2026- Institutions
- 83.6% of shares outstanding
- Insiders
- 1.24% of shares outstanding
- Shares outstanding
- 19.3M
- Float
- 13.2M shares available to trade
- Short interest
- 18.08% 3.1M shares short
- Days to cover
- 2.35 short interest up 10.7% vs prior month
- Institutions 83.64%
- Insiders 1.24%
- Other investors 15.12%
CRBP top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Cormorant Asset Management, LLC | 12.12% | 2.3M | $10.6M | — | June 30, 2026 |
| 2 | Orbimed Advisors LLC | 8.98% | 1.7M | $7.9M | — | June 30, 2026 |
| 3 | BlackRock Inc | 6.88% | 1.3M | $6.0M | +1.1M (+390.0%) | June 30, 2026 |
| 4 | Aberdeen Group PLC | 6.83% | 1.3M | $6.0M | — | June 30, 2026 |
| 5 | Vanguard Capital Management, LLC | 3.93% | 761K | $3.4M | +26,834 (+3.7%) | June 30, 2026 |
| 6 | Jones Hill Capital LP | 3.38% | 654K | $3.0M | +653,572 (0.0%) | June 30, 2026 |
| 7 | Prosight Management, LP | 3.36% | 650K | $2.9M | −47,108 (−6.8%) | June 30, 2026 |
| 8 | Stonepine Capital Management Llc | 2.20% | 425K | $1.9M | +41,538 (+10.8%) | June 30, 2026 |
| 9 | Geode Capital Management, LLC | 2.19% | 423K | $1.9M | +236,345 (+126.4%) | June 30, 2026 |
| 10 | ADAR1 Capital Management LLC | 2.18% | 422K | $1.9M | +90,006 (+27.1%) | June 30, 2026 |
| 11 | Diadema Partners LP | 1.56% | 301K | $1.4M | −138,693 (−31.5%) | June 30, 2026 |
| 12 | Susquehanna International Group, LLP | 1.52% | 293K | $1.3M | −40,212 (−12.1%) | June 30, 2026 |
| 13 | State Street Corp | 1.32% | 255K | $1.2M | +185,800 (+269.8%) | June 30, 2026 |
| 14 | Dimensional Fund Advisors, Inc. | 0.98% | 190K | $859,767 | +53,612 (+39.2%) | June 30, 2026 |
| 15 | Exome Asset Management LLC | 0.96% | 185K | $835,811 | −49,222 (−21.0%) | June 30, 2026 |
| 16 | MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.78% | 152K | $685,413 | −8,822 (−5.5%) | June 30, 2026 |
| 17 | Jane Street Group LLC | 0.72% | 139K | $628,881 | +65,940 (+90.1%) | June 30, 2026 |
| 18 | Northern Trust Corp | 0.65% | 125K | $564,575 | +83,402 (+200.9%) | June 30, 2026 |
| 19 | Vanguard Fiduciary Trust Co | 0.58% | 112K | $508,034 | +16,156 (+16.8%) | June 30, 2026 |
| 20 | Vanguard Portfolio Management, LLC | 0.58% | 111K | $503,085 | +86,937 (+356.8%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 12 holders added 2.6M shares and 5 cut 284K.
CRBP top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Biotech Growth Ord | 2.78% | 539K | $2.4M | — | June 30, 2026 |
| 2 | Vanguard MStar Total Stk Mkt Idx Invest | 2.76% | 534K | $2.4M | — | August 31, 2026 |
| 3 | abrdn Healthcare Investors | 2.24% | 434K | $2.0M | −343,997 (−44.2%) | August 31, 2026 |
| 4 | iShares Russell 2000 ETF | 2.23% | 431K | $1.9M | −4,992 (−1.1%) | September 30, 2026 |
| 5 | abrdn Life Sciences Investors | 1.99% | 385K | $1.7M | −158,442 (−29.1%) | August 31, 2026 |
| 6 | Fidelity Small Cap Index | 0.93% | 180K | $811,593 | +911 (+0.5%) | July 31, 2026 |
| 7 | iShares Russell 2000 Value ETF | 0.82% | 158K | $713,717 | +240 (+0.2%) | September 30, 2026 |
| 8 | Global X Marijuana Life Sciences ETF | 0.74% | 143K | $647,386 | −1,833 (−1.3%) | August 31, 2026 |
| 9 | Vanguard Russell 2000 ETF | 0.49% | 95K | $428,021 | +1,920 (+2.1%) | August 31, 2026 |
| 10 | Fidelity Enhanced Small Cap Core ETF | 0.47% | 91K | $409,159 | +189 (+0.2%) | September 30, 2026 |
| 11 | HealthInvest Sustainable Healthcare E | 0.36% | 70K | $315,378 | +69,774 (0.0%) | December 31, 2025 |
| 12 | Dimensional US Small Cap ETF | 0.30% | 58K | $263,891 | — | September 30, 2026 |
| 13 | iShares Micro-Cap ETF | 0.28% | 54K | $245,454 | −375 (−0.7%) | September 30, 2026 |
| 14 | Fidelity Extended Market Index | 0.25% | 49K | $222,126 | −264 (−0.5%) | August 31, 2026 |
| 15 | DFA US Micro Cap I | 0.21% | 40K | $179,530 | +8,173 (+25.9%) | August 31, 2026 |
| 16 | Schwab Small Cap Index | 0.21% | 40K | $179,453 | — | August 31, 2026 |
| 17 | HealthInvest S&M Cap Healthcare C | 0.19% | 37K | $169,414 | +37,481 (0.0%) | December 31, 2025 |
| 18 | Fidelity VIP Disciplined Small Cap Init | 0.18% | 34K | $155,158 | +26,544 (+341.1%) | July 31, 2026 |
| 19 | iShares Russell 2000 Small-Cap Idx Instl | 0.16% | 31K | $139,089 | — | August 31, 2026 |
| 20 | Fidelity Total Market Index | 0.15% | 28K | $128,544 | +1,267 (+4.7%) | August 31, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
CRBP insider transactions
latest 9| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-02-03 | Dominic Smethurst | Sell | $8.09 | 3,285 | $26,576 |
| 2026-02-03 | Ian Hodgson | Sell | $8.09 | 2,415 | $19,537 |
| 2025-12-11 | Cormorant Asset Management, Lp | Sell | $11.46 | 30,029 | $344,132 |
| 2025-10-27 | Yuval Cohen | Sell | $17.14 | 8,973 | $153,797 |
| 2025-10-24 | Sean F Moran | Sell | $17.02 | 12,981 | $220,937 |
| 2025-10-24 | Yuval Cohen | Sell | $17.01 | 18,660 | $317,407 |
| 2025-10-20 | Anne Altmeyer | Sell | $20.50 | 1,060 | $21,730 |
| 2025-05-30 | Anne Altmeyer | Sell | $7.25 | 1,392 | $10,092 |
| 2025-05-30 | John Kenneth Jenkins | Sell | $7.35 | 2,783 | $20,455 |
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.
CRBP shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns CRBP
Institutional investors own 83.6% of Corbus Pharmaceuticals's shares and insiders 1.24%. The largest holder is Cormorant Asset Management, LLC with 12.12% of the shares (2.3M), as of June 30, 2026. Among the top 20 institutions, 12 added shares and 5 reduced their stake in the latest filings. Short interest is 18.08% of the float, or 2.35 days of average trading volume. The share count rose 1,444.2% since 2014.
Related: CRBP analyst forecast, CRBP key metrics. See the CRBP stock overview for the latest quote and news.
CRBP ownership FAQ
Who owns the most Corbus Pharmaceuticals stock?
The largest shareholders of Corbus Pharmaceuticals are Cormorant Asset Management, LLC (12.12%), Orbimed Advisors LLC (8.98%), BlackRock Inc (6.88%), Aberdeen Group PLC (6.83%), Vanguard Capital Management, LLC (3.93%).
What percentage of Corbus Pharmaceuticals is owned by institutions?
Institutions hold 83.6% of Corbus Pharmaceuticals's shares outstanding; insiders hold 1.24%.
Which funds own Corbus Pharmaceuticals?
The largest fund holders of Corbus Pharmaceuticals are Biotech Growth Ord (2.78%), Vanguard MStar Total Stk Mkt Idx Invest (2.76%), abrdn Healthcare Investors (2.24%), iShares Russell 2000 ETF (2.23%), abrdn Life Sciences Investors (1.99%).
What is Corbus Pharmaceuticals's short interest?
3.1M shares of Corbus Pharmaceuticals were sold short, 18.08% of the float; at the average daily volume it would take 2.35 days to cover.
Are insiders buying or selling Corbus Pharmaceuticals?
Of the latest 9 reported insider transactions in Corbus Pharmaceuticals (since May 30, 2025), 0 were purchases and 9 were sales.
How many shares of Corbus Pharmaceuticals are outstanding?
Corbus Pharmaceuticals has 19.3M shares outstanding, of which 13.2M are in the public float.