Pulmonx
LUNG
113 hedge funds and large institutions have $93.9M invested in Pulmonx in 2025 Q2 according to their latest regulatory filings, with 23 funds opening new positions, 35 increasing their positions, 34 reducing their positions, and 25 closing their positions.
110% more call options, than puts
Call options by funds: $21K | Put options by funds: $10K
3% more repeat investments, than reductions
Existing positions increased: 35 | Existing positions reduced: 34
8% less first-time investments, than exits
New positions opened: 23 | Existing positions closed: 25
1.16% less ownership
Funds ownership: 91.22% → 90.06% (-1.2%)
2% less funds holding
Funds holding: 115 → 113 (-2)
62% less capital invested
Capital invested by funds: $244M → $93.9M (-$150M)
100% less funds holding in top 10
Funds holding in top 10: 1 → 0 (-1)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Millennium Management
New York
|
+$3.78M |
| 2 |
GCP
GSA Capital Partners
London,
United Kingdom
|
+$1.67M |
| 3 |
Bank of America
Charlotte,
North Carolina
|
+$1.61M |
| 4 |
Jacobs Levy Equity Management
Florham Park,
New Jersey
|
+$1.03M |
| 5 |
ACM
ADAR1 Capital Management
Austin,
Texas
|
+$807K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Fidelity Investments
Boston,
Massachusetts
|
-$4.56M |
| 2 |
Franklin Resources
San Mateo,
California
|
-$2.41M |
| 3 |
EIM
Essex Investment Management
Boston,
Massachusetts
|
-$2.04M |
| 4 |
Marshall Wace
London,
United Kingdom
|
-$1.07M |
| 5 |
Primecap Management
Pasadena,
California
|
-$986K |
LUNG Hedge Fund Activity: Q2 2025 in Review
113 of the 7,596 institutional investors tracked by Wall St. Rank reported a position in Pulmonx (LUNG) for Q2 2025, worth a combined $93.9M — down 62% from $244M a quarter earlier.
Sellers outnumbered buyers: 25 funds closed out of LUNG and 23 opened new positions — a net loss of 2 holders — while 34 trimmed existing stakes and 35 added.
The largest buyer was Millennium Management, adding an estimated $3.78M. The largest seller was Fidelity Investments, cutting an estimated $4.56M.
- 113 institutional investors held Pulmonx (LUNG) as of Q2 2025, down from 115 in Q1 2025.
- Funds reported $93.9M of Pulmonx stock for Q2 2025, down 62% quarter-over-quarter.
- 23 funds opened new Pulmonx positions in Q2 2025 and 25 closed out, a net change of -2 holders.
- The largest Pulmonx buyer in Q2 2025 was Millennium Management, an estimated $3.78M added.
- The largest Pulmonx seller in Q2 2025 was Fidelity Investments, an estimated $4.56M sold.
Based on aggregated 13F filings for Q2 2025.