Catalyst Biosciences
CBIO • XNAS
Catalyst Biosciences is a publicly traded company on XNAS, with a market cap of $236.5M. As of Q3 2025, 67% of shares are held by 40 institutional investors, with FMR LLC as the largest holder at 8.43%.
Market Cap$236.5M
Employees7.0
Overview
Overview of institutional ownership in CBIO as of Q3 2025 with a market cap of $199.5M
All Institutions
- Institutions
- 40
- Value Held
- $134.6M
- Shares Held
- 11.3M
- Avg Position
- $3.4M
- Median Position
- $670.8K
Hedge Funds
- Hedge Funds
- 12
- Value Held
- $52.3M
- Shares Held
- 4.4M
- Avg Position
- $4.4M
- Median Position
- $4.5M
Ownership Breakdown
Based on market cap of $199.5M as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.
Biggest Investors
Institutions with the largest positions in CBIO as of Q3 2025
| Institution | Position Value |
|---|---|
 FMR LLC Institution | $16.8M 0.00% of portfolio |
 Fairmount Funds Management LLC Hedge Fund•Sector | $16.5M 1.48% of portfolio |
 VR Adviser, LLC Venture Capital | $16.5M 0.93% of portfolio |
B BVF INC/IL Institution | $16.5M 0.67% of portfolio |
T TANG CAPITAL MANAGEMENT LLC Institution | $8.1M 0.32% of portfolio |
 VANGUARD GROUP INC Institution | $7.8M 0.00% of portfolio |
 Logos Global Management LP Hedge Fund•Long/Short | $7.1M 0.72% of portfolio |
 PERCEPTIVE ADVISORS LLC Hedge Fund•Long/Short | $5.4M 0.16% of portfolio |
 Boxer Capital Management, LLC Hedge Fund•Long/Short | $5.4M 1.78% of portfolio |
 Deep Track Capital, LP Hedge Fund•Long/Short | $5.4M 0.15% of portfolio |
Net Capital Flow
Institutional buying and selling activity for CBIO in Q3 2025
- Traded
- +$6.4M
- Buyers
- 24
- Sellers
- 10
- Total Bought
- +$27.6M
- Total Sold
- −$21.2M
- Avg Position
- $3.0M
Biggest Buyers
| Institution | Net Bought |
|---|---|
VANGUARD GROUP INC Institution | +$7.8M +657.9K shares |
T TANG CAPITAL MANAGEMENT LLC Institution | +$7.5M +629.7K shares |
 PRICE T ROWE ASSOCIATES INC /MD/ Long Only Manager | +$4.6M +383.6K shares |
B BlackRock, Inc. Institution | +$1.2M +103.1K shares |
A ADAGE CAPITAL PARTNERS GP LLC Institution | +$1.2M +99.1K shares |
 LEUCADIA NATIONAL CORP Institution | +$899.1K +75.6K shares |
 GEODE CAPITAL MANAGEMENT LLC ETF Provider | +$822.0K +69.1K shares |
Logos Global Management LP Hedge Fund•Long/Short | +$550.7K +46.3K shares |
 Marshall Wace LLP Institution | +$519.5K +43.7K shares |
 GOLDMAN SACHS GROUP INC Institution | +$439.6K +37.0K shares |
Biggest Sellers
| Institution | Net Sold |
|---|---|
 Paradigm Biocapital Advisors LP Hedge Fund•Long/Short | −$10.4M −642.7K shares |
B BRAIDWELL LP Hedge Fund•Multi-Strategy | −$4.2M −261.5K shares |
 Soleus Capital Management, L.P. Hedge Fund•Long/Short | −$2.4M −200.0K shares |
 Frazier Life Sciences Management, L.P. Venture Capital | −$2.1M −180.7K shares |
 WELLINGTON MANAGEMENT CO LLP Long Only Manager | −$1.9M −162.2K shares |
 BANK OF AMERICA CORP /DE/ Institution | −$63.8K −5.4K shares |
 COMMODORE CAPITAL LP Hedge Fund•Long/Short | −$34.0K −2.9K shares |
 BARCLAYS PLC Institution | −$4.6K −286.0 shares |
G GROUP ONE TRADING, L.P. Institution | −$951.2 −80.0 shares |
 RAYMOND JAMES FINANCIAL INC RIA/Wealth | −$807.0 −50.0 shares |
Entry and Exit Activity
Institutions that initiated new positions or completely exited CBIO in Q3 2025
- New Positions
- 0
- New Value
- -
- Exited Positions
- 4
- Exited Value
- $14.6M
New Positions
| Institution | Position Value |
|---|---|
| No new positions found | |
Exited Positions
| Institution | Previous Position |
|---|---|
Paradigm Biocapital Advisors LP Hedge Fund•Long/Short | $10.4M 642.7K shares |
B BRAIDWELL LP Hedge Fund•Multi-Strategy | $4.2M 261.5K shares |
BARCLAYS PLC Institution | $4.6K 286.0 shares |
RAYMOND JAMES FINANCIAL INC RIA/Wealth | $807.0 50.0 shares |
Options Activity
Institutions with the largest Call and Put options positions in CBIO as of Q3 2025
- Call Positions
- 0
- Call Value
- -
- Put Positions
- 0
- Put Value
- -
Call Positions
| Institution | Position Value |
|---|---|
| No call positions found | |
Put Positions
| Institution | Position Value |
|---|---|
| No put positions found | |
Most Committed Institutions
Institutions with CBIO as the highest % of their portfolio as of Q3 2025
| Institution | Portfolio Weight |
|---|---|
Boxer Capital Management, LLC Hedge Fund•Long/Short | 1.78% $5.4M |
Fairmount Funds Management LLC Hedge Fund•Sector | 1.48% $16.5M |
VR Adviser, LLC Venture Capital | 0.93% $16.5M |
Logos Global Management LP Hedge Fund•Long/Short | 0.72% $7.1M |
B BVF INC/IL Institution | 0.67% $16.5M |
T TANG CAPITAL MANAGEMENT LLC Institution | 0.32% $8.1M |
COMMODORE CAPITAL LP Hedge Fund•Long/Short | 0.26% $5.4M |
PERCEPTIVE ADVISORS LLC Hedge Fund•Long/Short | 0.16% $5.4M |
Deep Track Capital, LP Hedge Fund•Long/Short | 0.15% $5.4M |
Soleus Capital Management, L.P. Hedge Fund•Long/Short | 0.13% $2.4M |
Hedge Fund Spotlight
Discover hedge funds investing in CBIO
Affinity Asset Advisors, LLC
Hedge Fund • Long/Short
Portfolio ManagerJonathan Bo-Shing Chu
- Portfolio Value
- $983.0M
- Positions
- 78
- Last Reported
- Q3 2025
Sector Allocation
Position in Catalyst Biosciences
- Market Value
- $214.0K
- Shares Held
- 18.0K
- Portfolio Weight
- 0.02%
- Owned Since
- 2025-Q2
| Top Holding | Sector | Market Value | Weight |
|---|---|---|---|
Unknown Unknown | $66.7M | 6.78% | |
Biotechnology Healthcare | $64.8M | 6.59% | |
ETF ETF | $56.3M | 5.73% |
