Pulmonx
LUNG
115 hedge funds and large institutions have $244M invested in Pulmonx in 2025 Q1 according to their latest regulatory filings, with 14 funds opening new positions, 42 increasing their positions, 31 reducing their positions, and 17 closing their positions.
35% more repeat investments, than reductions
Existing positions increased: 42 | Existing positions reduced: 31
0.39% more ownership
Funds ownership: 90.84% → 91.22% (+0.39%)
0% more capital invested
Capital invested by funds: $244M → $244M (+$777K)
3% less funds holding
Funds holding: 118 → 115 (-3)
18% less first-time investments, than exits
New positions opened: 14 | Existing positions closed: 17
50% less funds holding in top 10
Funds holding in top 10: 2 → 1 (-1)
96% less call options, than puts
Call options by funds: $76K | Put options by funds: $1.85M
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
SAM
Silvercrest Asset Management
New York
|
+$6.59M |
| 2 |
Marshall Wace
London,
United Kingdom
|
+$3.26M |
| 3 |
Morgan Stanley
New York
|
+$2.98M |
| 4 |
PHP
Parkman Healthcare Partners
Stamford,
Connecticut
|
+$2.86M |
| 5 |
DM
Deerfield Management
New York
|
+$2.52M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
ACM
Altium Capital Management
New York
|
-$5.53M |
| 2 |
Fidelity Investments
Boston,
Massachusetts
|
-$3.58M |
| 3 |
KLP
Kent Lake PR
Anasco,
Puerto Rico
|
-$2.84M |
| 4 |
PVI
Pura Vida Investments
New York
|
-$2.63M |
| 5 |
RSCM
Rock Springs Capital Management
Baltimore,
Maryland
|
-$1.9M |
LUNG Hedge Fund Activity: Q1 2025 in Review
115 of the 7,459 institutional investors tracked by Wall St. Rank reported a position in Pulmonx (LUNG) for Q1 2025, worth a combined $244M — up 0.32% from $244M a quarter earlier.
Sellers outnumbered buyers: 17 funds closed out of LUNG and 14 opened new positions — a net loss of 3 holders — while 31 trimmed existing stakes and 42 added.
The largest buyer was Silvercrest Asset Management, opening a new position worth an estimated $6.59M. The largest seller was Altium Capital Management, exiting entirely with an estimated $5.53M sold.
- 115 institutional investors held Pulmonx (LUNG) as of Q1 2025, down from 118 in Q4 2024.
- Funds reported $244M of Pulmonx stock for Q1 2025, up 0.32% quarter-over-quarter.
- 14 funds opened new Pulmonx positions in Q1 2025 and 17 closed out, a net change of -3 holders.
- The largest Pulmonx buyer in Q1 2025 was Silvercrest Asset Management, an estimated $6.59M added.
- The largest Pulmonx seller in Q1 2025 was Altium Capital Management, an estimated $5.53M sold.
Based on aggregated 13F filings for Q1 2025.