Pulmatrix, Inc. (PULM) — Institutional Holders, Q2 2026
15 institutional investment managers reported a PULM position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $568.7K. Every filer is listed below, ranked by position value. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.
PULM in Q2 2026: what funds did
Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.
Biggest buyers
- Shay CapitalNew · +18,857 sh+$32.1K
- RENAISSANCE TECHNOLOGIESAdded · +13,550 sh+$23.0K
- SBI Securities , Ltd.Added · +1,200 sh+$2.0K
- UBS Group AGAdded · +492 sh+$836.00
- BARCLAYS PLCNew · +15 sh+$26.00
Biggest sellers
- JANE STREET GROUPSold out · -14,584 sh-$24.8K
- GEODE CAPITAL MANAGEMENTTrimmed · -11,330 sh-$19.3K
- XTX Topco LtdTrimmed · -1,678 sh-$2.9K
- VANGUARD CAPITAL MANAGEMENTTrimmed · -1,300 sh-$2.2K
- Tower Research Capital (TRC)Sold out · -207 sh-$352.00
PULM 13F holders ranked 1–15 of 15
| # | Institution | Shares | Value | % of portfolio | QoQShares vs Q1 2026 |
|---|---|---|---|---|---|
| 1 | RENAISSANCE TECHNOLOGIES#1 · 122,698 sh | 122,698 | $208.6K | <0.01% | +12.4% |
| 2 | BlackRock#2 · 54,899 sh | 54,899 | $93.3K | 0.00% | 0.0% |
| 3 | GEODE CAPITAL MANAGEMENT#3 · 33,299 sh | 33,299 | $56.6K | 0.00% | -25.4% |
| 4 | VANGUARD CAPITAL MANAGEMENT#4 · 32,294 sh | 32,294 | $54.9K | 0.00% | -3.9% |
| 5 | SBI Securities , Ltd.#5 · 31,285 sh | 31,285 | $53.2K | — | +4.0% |
| 6 | Shay Capital#6 · 18,857 sh | 18,857 | $32.1K | <0.01% | New |
| 7 | VANGUARD FIDUCIARY#7 · 14,715 sh | 14,715 | $25.0K | 0.00% | 0.0% |
| 8 | STATE STREET#8 · 13,945 sh | 13,945 | $23.7K | 0.00% | 0.0% |
| 9 | XTX Topco Ltd#9 · 11,991 sh | 11,991 | $20.4K | <0.01% | -12.3% |
| 10 | UBS Group AG#10 · 515 sh | 515 | $875.00 | 0.00% | +2139.1% |
| 11 | BARCLAYS PLC#11 · 15 sh | 15 | $26.00 | 0.00% | New |
| 12 | Farther Finance Advisors#12 · 7 sh | 7 | $12.00 | — | 0.0% |
| 13 | Allworth Financial#13 · 3 sh | 3 | $6.00 | 0.00% | 0.0% |
| 14 | NORTHWESTERN MUTUAL WEALTH MANAGEMENT#14 · 1 sh | 1 | $2.00 | 0.00% | 0.0% |
| 15 | ROYAL BANK OF CANADA#15 · 7 sh | 7 | $0.00 | 0.00% | 0.0% |
Funds that sold out of PULM in Q2 2026 (2)
Held PULM at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.
| Institution | Shares sold | Value in Q1 2026 |
|---|---|---|
| JANE STREET GROUP14,584 sh | 14,584 | $18.8K |
| Tower Research Capital (TRC)207 sh | 207 | $267.00 |
Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.