Tenable Holdings
TENB
281 hedge funds and large institutions have $3.76B invested in Tenable Holdings in 2025 Q2 according to their latest regulatory filings, with 37 funds opening new positions, 125 increasing their positions, 91 reducing their positions, and 50 closing their positions.
100% more funds holding in top 10
Funds holding in top 10: 2 → 4 (+2)
39% more call options, than puts
Call options by funds: $1.25M | Put options by funds: $898K
37% more repeat investments, than reductions
Existing positions increased: 125 | Existing positions reduced: 91
2.01% more ownership
Funds ownership: 89.1% → 91.11% (+2%)
0% more capital invested
Capital invested by funds: $3.75B → $3.76B (+$10.6M)
5% less funds holding
Funds holding: 297 → 281 (-16)
26% less first-time investments, than exits
New positions opened: 37 | Existing positions closed: 50
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Morgan Stanley
New York
|
+$98.1M |
| 2 |
Assenagon Asset Management
Senningerberg,
Luxembourg
|
+$96M |
| 3 |
Alyeska Investment Group
Chicago,
Illinois
|
+$66.3M |
| 4 |
SCM
Shapiro Capital Management
Atlanta,
Georgia
|
+$42M |
| 5 |
Marshall Wace
London,
United Kingdom
|
+$29.4M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Fidelity Investments
Boston,
Massachusetts
|
-$235M |
| 2 |
William Blair Investment Management
Chicago,
Illinois
|
-$85.2M |
| 3 |
ACH
ArrowMark Colorado Holdings
Denver,
Colorado
|
-$53.1M |
| 4 |
Fisher Asset Management
Camas,
Washington
|
-$43.2M |
| 5 |
Mackenzie Financial
Toronto Ontario,
Ontario, Canada
|
-$34.3M |
TENB Hedge Fund Activity: Q2 2025 in Review
281 of the 7,595 institutional investors tracked by Wall St. Rank reported a position in Tenable Holdings (TENB) for Q2 2025, worth a combined $3.76B — up 0.28% from $3.75B a quarter earlier.
Sellers outnumbered buyers: 50 funds closed out of TENB and 37 opened new positions — a net loss of 13 holders — while 91 trimmed existing stakes and 125 added.
The largest buyer was Morgan Stanley, adding an estimated $98.1M. The largest seller was Fidelity Investments, cutting an estimated $235M.
- 281 institutional investors held Tenable Holdings (TENB) as of Q2 2025, down from 297 in Q1 2025.
- Funds reported $3.76B of Tenable Holdings stock for Q2 2025, up 0.28% quarter-over-quarter.
- 37 funds opened new Tenable Holdings positions in Q2 2025 and 50 closed out, a net change of -13 holders.
- The largest Tenable Holdings buyer in Q2 2025 was Morgan Stanley, an estimated $98.1M added.
- The largest Tenable Holdings seller in Q2 2025 was Fidelity Investments, an estimated $235M sold.
Based on aggregated 13F filings for Q2 2025.