PulmatrixPULM
13F holders, Q4 2025 (December 31)15holders +1
3new positions
2sold out
1famous investor
$2.23avg. 13F price*
At the end of Q4 2025, 15 institutions reported holding Pulmatrix Inc. (PULM) in their 13F filings, up 1 from Q3 2025. 3 opened new positions and 2 sold out. The largest holders were Renaissance Technologies ($247K), BlackRock, Inc. ($123K) and SBI Securities Co., Ltd. ($123K). One famous investor held it Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio).
- Company
- Pulmatrix Inc.
- CUSIP
- 74584P301
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 3 | $46K |
| Exits | 2 | $642 |
All 13F filers, Q3 2025 → Q4 2025: 21,923 shares bought and 11,012 shares sold, net +10,911 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 15 holders
| Renaissance Technologies | 0.00% | Reduce -3.0% | 110,920 | $247K |
| BlackRock, Inc. | 0.00% | No change | 55,335 | $123K |
| SBI Securities Co., Ltd. | 0.00% | Reduce -6.9% | 55,242 | $123K |
| Vanguard Group Inc. | 0.00% | Reduce -4.7% | 47,082 | $105K |
| Geode Capital Management, LLC | 0.00% | No change | 40,944 | $91K |
| DRW Securities, LLC | 0.00% | New | 20,505 | $46K |
| State Street Corp. | 0.00% | No change | 13,945 | $31K |
| Dimensional Fund Advisors LP | 0.00% | Reduce -4.2% | 10,326 | $23K |
| Bank of America Corp. | 0.00% | Add +4036.4% | 1,365 | $3K |
| Tower Research Capital LLC (TRC) | 0.00% | Reduce -36.4% | 913 | $2K |
| Flagship Harbor Advisors, LLC | 0.00% | New | 80 | $178 |
| Farther Finance Advisors, LLC | 0.00% | No change | 7 | $16 |
| Allworth Financial LP | 0.00% | No change | 3 | $7 |
| Northwestern Mutual Wealth Management Co. | 0.00% | Reduce -85.7% | 1 | $2 |
| Royal Bank of Canada | 0.00% | New | 6 | $0 |
"% of holder's portfolio" is PULM's weight in each manager's 13F, not the share of Pulmatrix Inc. the manager owns.