Seagate
STX
1,125 hedge funds and large institutions have $45.8B invested in Seagate in 2025 Q3 according to their latest regulatory filings, with 277 funds opening new positions, 369 increasing their positions, 324 reducing their positions, and 85 closing their positions.
226% more first-time investments, than exits
New positions opened: 277 | Existing positions closed: 85
59% more capital invested
Capital invested by funds: $28.8B → $45.8B (+$17B)
57% more funds holding in top 10
Funds holding in top 10: 23 → 36 (+13)
18% more funds holding
Funds holding: 954 → 1,125 (+171)
14% more repeat investments, than reductions
Existing positions increased: 369 | Existing positions reduced: 324
2.66% less ownership
Funds ownership: 93.84% → 91.18% (-2.7%)
11% less call options, than puts
Call options by funds: $1.91B | Put options by funds: $2.16B
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
WCM Investment Management
Laguna Beach,
California
|
+$885M |
| 2 |
Arrowstreet Capital
Boston,
Massachusetts
|
+$460M |
| 3 |
Goldman Sachs
New York
|
+$337M |
| 4 |
DZ Bank
Frankfurt Am Main,
Germany
|
+$169M |
| 5 |
Bank of America
Charlotte,
North Carolina
|
+$168M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
JP Morgan Chase
New York
|
-$812M |
| 2 |
Fidelity Investments
Boston,
Massachusetts
|
-$757M |
| 3 |
SPC
Slate Path Capital
New York
|
-$288M |
| 4 |
SHCM
Sachem Head Capital Management
New York
|
-$220M |
| 5 |
Capital Research Global Investors
Los Angeles,
California
|
-$188M |
STX Hedge Fund Activity: Q3 2025 in Review
1,125 of the 7,640 institutional investors tracked by Wall St. Rank reported a position in Seagate (STX) for Q3 2025, worth a combined $45.8B — up 59% from $28.8B a quarter earlier.
Buyers outnumbered sellers: 277 funds opened new STX positions and 85 closed out — a net gain of 192 holders — while 369 added to existing stakes and 324 trimmed.
The largest buyer was WCM Investment Management, opening a new position worth an estimated $885M. The largest seller was JP Morgan Chase, cutting an estimated $812M.
- 1,125 institutional investors held Seagate (STX) as of Q3 2025, up from 954 in Q2 2025.
- Funds reported $45.8B of Seagate stock for Q3 2025, up 59% quarter-over-quarter.
- 277 funds opened new Seagate positions in Q3 2025 and 85 closed out, a net change of +192 holders.
- The largest Seagate buyer in Q3 2025 was WCM Investment Management, an estimated $885M added.
- The largest Seagate seller in Q3 2025 was JP Morgan Chase, an estimated $812M sold.
Based on aggregated 13F filings for Q3 2025.