Similarweb
SMWB
110 hedge funds and large institutions have $330M invested in Similarweb in 2025 Q2 according to their latest regulatory filings, with 21 funds opening new positions, 46 increasing their positions, 28 reducing their positions, and 20 closing their positions.
64% more repeat investments, than reductions
Existing positions increased: 46 | Existing positions reduced: 28
5% more first-time investments, than exits
New positions opened: 21 | Existing positions closed: 20
1% more funds holding
Funds holding: 109 → 110 (+1)
4.5% less ownership
Funds ownership: 54.17% → 49.67% (-4.5%)
11% less capital invested
Capital invested by funds: $371M → $330M (-$41.1M)
20% less funds holding in top 10
Funds holding in top 10: 5 → 4 (-1)
21% less call options, than puts
Call options by funds: $6.58M | Put options by funds: $8.3M
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
CP
CenterBook Partners
Greenwich,
Connecticut
|
+$4.75M |
| 2 |
N
Nuveen
Charlotte,
North Carolina
|
+$4.3M |
| 3 |
Morgan Stanley
New York
|
+$4.29M |
| 4 |
PCM
Penn Capital Management
Philadelphia,
Pennsylvania
|
+$3.09M |
| 5 |
Citadel Advisors
Miami,
Florida
|
+$2.85M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Jennison Associates
New York
|
-$15.6M |
| 2 |
T. Rowe Price Investment Management
Baltimore,
Maryland
|
-$11.7M |
| 3 |
CCPM
Cooper Creek Partners Management
New York
|
-$9.87M |
| 4 |
SSA
Schonfeld Strategic Advisors
New York
|
-$8.21M |
| 5 |
PF
Phoenix Financial
Givatayim,
Israel
|
-$7.16M |
SMWB Hedge Fund Activity: Q2 2025 in Review
110 of the 7,596 institutional investors tracked by Wall St. Rank reported a position in Similarweb (SMWB) for Q2 2025, worth a combined $330M — down 11% from $371M a quarter earlier.
Buyers outnumbered sellers: 21 funds opened new SMWB positions and 20 closed out — a net gain of 1 holder — while 46 added to existing stakes and 28 trimmed.
The largest buyer was CenterBook Partners, adding an estimated $4.75M. The largest seller was Jennison Associates, exiting entirely with an estimated $15.6M sold.
- 110 institutional investors held Similarweb (SMWB) as of Q2 2025, up from 109 in Q1 2025.
- Funds reported $330M of Similarweb stock for Q2 2025, down 11% quarter-over-quarter.
- 21 funds opened new Similarweb positions in Q2 2025 and 20 closed out, a net change of +1 holder.
- The largest Similarweb buyer in Q2 2025 was CenterBook Partners, an estimated $4.75M added.
- The largest Similarweb seller in Q2 2025 was Jennison Associates, an estimated $15.6M sold.
Based on aggregated 13F filings for Q2 2025.