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Pulmatrix
PULM

14 hedge funds and large institutions have $1.68M invested in Pulmatrix in 2025 Q3 according to their latest regulatory filings, with 4 funds opening new positions, 3 increasing their positions, 4 reducing their positions, and 2 closing their positions.

New
Increased
Maintained
Reduced
Closed

100% more first-time investments, than exits

New positions opened: 4 | Existing positions closed: 2

17% more funds holding

Funds holding: 12 → 14 (+2)

0.3% more ownership

Funds ownership: 9.17% → 9.47% (+0.3%)

25% less repeat investments, than reductions

Existing positions increased: 3 | Existing positions reduced: 4

27% less capital invested

Capital invested by funds: $2.31M → $1.68M (-$629K)

Holders
14
Holders Change
+2
Holders Change %
+16.67%
% of All Funds
0.18%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
4
Increased
3
Reduced
4
Closed
2
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

Rank Fund Capital Flow
1
Dimensional Fund Advisors
Dimensional Fund Advisors
Texas
+$57.3K
2
Renaissance Technologies
Renaissance Technologies
New York
+$19K
3
Vanguard Group
Vanguard Group
Pennsylvania
+$12.7K
4
TRCT
Tower Research Capital (TRC)
New York
+$5.46K
5
FFA
Farther Finance Advisors
California
+$37

Top Sellers

Rank Fund Capital Flow
1
UBS Group
UBS Group
Switzerland
-$28.3K
2
SS
SBI Securities
Japan
-$6.5K
3
Geode Capital Management
Geode Capital Management
Massachusetts
-$744
4
Citigroup
Citigroup
New York
-$621
5
Bank of America
Bank of America
North Carolina
-$16
Name Holding Trade Value Shares
Change 		Change in
Stake
Renaissance Technologies
1
Renaissance Technologies
New York
$556K +$19K +3,570 +3%
SS
2
SBI Securities
Japan
$288K -$6.5K -1,223 -2%
BlackRock
3
BlackRock
New York
$269K – – –
Vanguard Group
4
Vanguard Group
Pennsylvania
$241K +$12.7K +2,400 +5%
Geode Capital Management
5
Geode Capital Management
Massachusetts
$199K -$744 -140 -0.3%
State Street
6
State Street
Massachusetts
$67.9K – – –
Dimensional Fund Advisors
7
Dimensional Fund Advisors
Texas
$52.5K +$57.3K +10,780 New
TRCT
8
Tower Research Capital (TRC)
New York
$6.98K +$5.46K +1,028 +252%
UBS Group
9
UBS Group
Switzerland
$627 -$28.3K -5,334 -98%
Bank of America
10
Bank of America
North Carolina
$161 -$16 -3 -8%
FFA
11
Farther Finance Advisors
California
$34 +$37 +7 New
Northwestern Mutual Wealth Management
12
Northwestern Mutual Wealth Management
Wisconsin
$34 +$37 +7 New
AF
13
Allworth Financial
California
$15 – – –
Barclays
14
Barclays
United Kingdom
$15 +$16 +3 New
Citigroup
15
Citigroup
New York
– -$621 -90 Closed
Raymond James Financial
16
Raymond James Financial
Florida
– -$7 -1 Closed

PULM Hedge Fund Activity: Q3 2025 in Review

14 of the 7,620 institutional investors tracked by Wall St. Rank reported a position in Pulmatrix (PULM) for Q3 2025, worth a combined $1.68M — down 27% from $2.31M a quarter earlier.

Buyers outnumbered sellers: 4 funds opened new PULM positions and 2 closed out — a net gain of 2 holders — while 3 added to existing stakes and 4 trimmed.

The largest buyer was Dimensional Fund Advisors, opening a new position worth an estimated $57.3K. The largest seller was UBS Group, cutting an estimated $28.3K.

  • 14 institutional investors held Pulmatrix (PULM) as of Q3 2025, up from 12 in Q2 2025.
  • Funds reported $1.68M of Pulmatrix stock for Q3 2025, down 27% quarter-over-quarter.
  • 4 funds opened new Pulmatrix positions in Q3 2025 and 2 closed out, a net change of +2 holders.
  • The largest Pulmatrix buyer in Q3 2025 was Dimensional Fund Advisors, an estimated $57.3K added.
  • The largest Pulmatrix seller in Q3 2025 was UBS Group, an estimated $28.3K sold.

Based on aggregated 13F filings for Q3 2025.