C
Capnia
CAPN • XNAS
Capnia is a blank checks company on XNAS, with a market cap of $83.1M. As of Q3 2025, 60% of shares are held by 28 institutional investors, with BERKLEY W R CORP as the largest holder at 9.75%.
Market Cap$83.1M
BLANK CHECKS
Overview
Overview of institutional ownership in CAPN as of Q3 2025 with a market cap of $82.0M
All Institutions
- Institutions
- 28
- Value Held
- $49.1M
- Shares Held
- 4.7M
- Avg Position
- $1.8M
- Median Position
- $916.1K
Hedge Funds
- Hedge Funds
- 11
- Value Held
- $25.3M
- Shares Held
- 2.4M
- Avg Position
- $2.3M
- Median Position
- $1.6M
Ownership Breakdown
Based on market cap of $82.0M as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.
Biggest Investors
Institutions with the largest positions in CAPN as of Q3 2025
| Institution | Position Value |
|---|---|
 BERKLEY W R CORP Institution | $8.0M 0.53% of portfolio |
 WOLVERINE ASSET MANAGEMENT LLC Hedge Fund•Multi-Strategy | $5.9M 0.40% of portfolio |
 RIVERNORTH CAPITAL MANAGEMENT, LLC Hedge Fund•Multi-Strategy | $4.7M 0.29% of portfolio |
 CNH PARTNERS LLC Hedge Fund•Multi-Strategy | $3.7M 0.14% of portfolio |
 Westchester Capital Management, LLC Hedge Fund•Merger Arb | $3.4M 0.19% of portfolio |
 BOOTHBAY FUND MANAGEMENT, LLC Fund of Funds | $3.2M 0.08% of portfolio |
A ATW SPAC MANAGEMENT LLC Institution | $3.2M 5.22% of portfolio |
K Karpus Management, Inc. Institution | $3.0M 0.10% of portfolio |
 Polar Securities Inc. Hedge Fund•Multi-Strategy | $2.9M 0.09% of portfolio |
H HEIGHTS CAPITAL MANAGEMENT, INC Institution | $1.6M 0.56% of portfolio |
Net Capital Flow
Institutional buying and selling activity for CAPN in Q3 2025
- Traded
- −$2.2M
- Buyers
- 6
- Sellers
- 5
- Total Bought
- +$408.5K
- Total Sold
- −$2.6M
- Avg Position
- $1.7M
Biggest Buyers
| Institution | Net Bought |
|---|---|
W Warberg Asset Management LLC Hedge Fund•Multi-Strategy | +$180.2K +17.2K shares |
Q Quarry LP Institution | +$152.3K +14.5K shares |
 TORONTO DOMINION BANK Institution | +$68.5K +6.5K shares |
 LONGFELLOW INVESTMENT MANAGEMENT CO LLC Long Only Manager | +$4.9K +470.0 shares |
A Advisor Group Holdings, Inc. Institution | +$2.6K +250.0 shares |
 MORGAN STANLEY RIA/Wealth | +$52.3 +5.0 shares |
Biggest Sellers
| Institution | Net Sold |
|---|---|
 Logan Stone Capital, LLC Hedge Fund•Long/Short | −$1.2M −116.4K shares |
 Wealthspring Capital LLC Hedge Fund•Event Driven | −$1.2M −113.3K shares |
CNH PARTNERS LLC Hedge Fund•Multi-Strategy | −$83.6K −8.0K shares |
K Karpus Management, Inc. Institution | −$72.9K −7.0K shares |
WOLVERINE ASSET MANAGEMENT LLC Hedge Fund•Multi-Strategy | −$29.6K −2.8K shares |
Entry and Exit Activity
Institutions that initiated new positions or completely exited CAPN in Q3 2025
- New Positions
- 3
- New Value
- $337.4K
- Exited Positions
- 1
- Exited Value
- $1.2M
New Positions
| Institution | Position Value |
|---|---|
W Warberg Asset Management LLC Hedge Fund•Multi-Strategy | $180.2K 17.2K shares |
Q Quarry LP Institution | $152.3K 14.5K shares |
LONGFELLOW INVESTMENT MANAGEMENT CO LLC Long Only Manager | $4.9K 470.0 shares |
Exited Positions
| Institution | Previous Position |
|---|---|
Logan Stone Capital, LLC Hedge Fund•Long/Short | $1.2M 116.4K shares |
Options Activity
Institutions with the largest Call and Put options positions in CAPN 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 CAPN as the highest % of their portfolio as of Q3 2025
| Institution | Portfolio Weight |
|---|---|
A ATW SPAC MANAGEMENT LLC Institution | 5.22% $3.2M |
H HEIGHTS CAPITAL MANAGEMENT, INC Institution | 0.56% $1.6M |
BERKLEY W R CORP Institution | 0.53% $8.0M |
WOLVERINE ASSET MANAGEMENT LLC Hedge Fund•Multi-Strategy | 0.40% $5.9M |
W Warberg Asset Management LLC Hedge Fund•Multi-Strategy | 0.36% $180.2K |
RIVERNORTH CAPITAL MANAGEMENT, LLC Hedge Fund•Multi-Strategy | 0.29% $4.7M |
Westchester Capital Management, LLC Hedge Fund•Merger Arb | 0.19% $3.4M |
Wealthspring Capital LLC Hedge Fund•Event Driven | 0.18% $622.9K |
CNH PARTNERS LLC Hedge Fund•Multi-Strategy | 0.14% $3.7M |
W WHITEBOX ADVISORS LLC Hedge Fund•Multi-Strategy | 0.10% $1.3M |
Hedge Fund Spotlight
Discover hedge funds investing in CAPN
TWO SIGMA INVESTMENTS LLC
Hedge Fund • Multi-Strategy
Portfolio ManagerScott David Hoffman
- Portfolio Value
- $62.0B
- Positions
- 3,252
- Last Reported
- Q3 2025
Sector Allocation
C
Position in Capnia
- Market Value
- $1.6M
- Shares Held
- 150.0K
- Portfolio Weight
- 0.00%
- Owned Since
- 2024-Q4
| Top Holding | Sector | Market Value | Weight |
|---|---|---|---|
ETF ETF | $680.4M | 1.10% | |
ETF ETF | $582.6M | 0.94% | |
ETF ETF | $489.6M | 0.79% |
