Fastly Inc
FSLY
251 hedge funds and large institutions have $1.17B invested in Fastly Inc in 2025 Q4 according to their latest regulatory filings, with 57 funds opening new positions, 80 increasing their positions, 62 reducing their positions, and 39 closing their positions.
117% more call options, than puts
Call options by funds: $60.4M | Put options by funds: $27.8M
46% more first-time investments, than exits
New positions opened: 57 | Existing positions closed: 39
30% more capital invested
Capital invested by funds: $900M → $1.17B (+$274M)
29% more repeat investments, than reductions
Existing positions increased: 80 | Existing positions reduced: 62
5.79% more ownership
Funds ownership: 71.37% → 77.16% (+5.8%)
5% more funds holding
Funds holding: 239 → 251 (+12)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Alyeska Investment Group
Chicago,
Illinois
|
+$45.6M |
| 2 |
Point72 Asset Management
Stamford,
Connecticut
|
+$23.5M |
| 3 |
Prudential Financial
Newark,
New Jersey
|
+$18.2M |
| 4 |
Two Sigma Investments
New York
|
+$17M |
| 5 |
DCM
Driehaus Capital Management
Chicago,
Illinois
|
+$13.7M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Royal Bank of Canada
Toronto,
Ontario, Canada
|
-$24.7M |
| 2 |
DSCM
Divisadero Street Capital Management
Miami,
Florida
|
-$21.2M |
| 3 |
Dimensional Fund Advisors
Austin,
Texas
|
-$13.9M |
| 4 |
PCM
Penserra Capital Management
Orinda,
California
|
-$13.8M |
| 5 |
Marshall Wace
London,
United Kingdom
|
-$9.57M |
FSLY Hedge Fund Activity: Q4 2025 in Review
251 of the 8,267 institutional investors tracked by Wall St. Rank reported a position in Fastly Inc (FSLY) for Q4 2025, worth a combined $1.17B — up 30% from $900M a quarter earlier.
Buyers outnumbered sellers: 57 funds opened new FSLY positions and 39 closed out — a net gain of 18 holders — while 80 added to existing stakes and 62 trimmed.
The largest buyer was Alyeska Investment Group, adding an estimated $45.6M. The largest seller was Royal Bank of Canada, cutting an estimated $24.7M.
- 251 institutional investors held Fastly Inc (FSLY) as of Q4 2025, up from 239 in Q3 2025.
- Funds reported $1.17B of Fastly Inc stock for Q4 2025, up 30% quarter-over-quarter.
- 57 funds opened new Fastly Inc positions in Q4 2025 and 39 closed out, a net change of +18 holders.
- The largest Fastly Inc buyer in Q4 2025 was Alyeska Investment Group, an estimated $45.6M added.
- The largest Fastly Inc seller in Q4 2025 was Royal Bank of Canada, an estimated $24.7M sold.
Based on aggregated 13F filings for Q4 2025.