ATI
570 hedge funds and large institutions have $14.7B invested in ATI in 2025 Q4 according to their latest regulatory filings, with 145 funds opening new positions, 169 increasing their positions, 181 reducing their positions, and 36 closing their positions.
303% more first-time investments, than exits
New positions opened: 145 | Existing positions closed: 36
85% more call options, than puts
Call options by funds: $154M | Put options by funds: $83.1M
41% more capital invested
Capital invested by funds: $10.5B → $14.7B (+$4.26B)
33% more funds holding in top 10
Funds holding in top 10: 9 → 12 (+3)
21% more funds holding
Funds holding: 470 → 570 (+100)
1.01% more ownership
Funds ownership: 93.44% → 94.45% (+1%)
7% less repeat investments, than reductions
Existing positions increased: 169 | Existing positions reduced: 181
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
AQR Capital Management
Greenwich,
Connecticut
|
+$86.7M |
| 2 |
UBS Group
Zurich,
Switzerland
|
+$68.5M |
| 3 |
JG
Jain Global
New York
|
+$62.8M |
| 4 |
Prudential Financial
Newark,
New Jersey
|
+$55.3M |
| 5 |
Point72 Asset Management
Stamford,
Connecticut
|
+$44M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Royal Bank of Canada
Toronto,
Ontario, Canada
|
-$118M |
| 2 |
D.E. Shaw & Co
New York
|
-$97.9M |
| 3 |
CCM
Channing Capital Management
Chicago,
Illinois
|
-$97.8M |
| 4 |
DC
Dendur Capital
New York
|
-$63.3M |
| 5 |
T. Rowe Price Associates
Baltimore,
Maryland
|
-$56.1M |
ATI Hedge Fund Activity: Q4 2025 in Review
570 of the 8,267 institutional investors tracked by Wall St. Rank reported a position in ATI (ATI) for Q4 2025, worth a combined $14.7B — up 41% from $10.5B a quarter earlier.
Buyers outnumbered sellers: 145 funds opened new ATI positions and 36 closed out — a net gain of 109 holders — while 169 added to existing stakes and 181 trimmed.
The largest buyer was AQR Capital Management, adding an estimated $86.7M. The largest seller was Royal Bank of Canada, cutting an estimated $118M.
- 570 institutional investors held ATI (ATI) as of Q4 2025, up from 470 in Q3 2025.
- Funds reported $14.7B of ATI stock for Q4 2025, up 41% quarter-over-quarter.
- 145 funds opened new ATI positions in Q4 2025 and 36 closed out, a net change of +109 holders.
- The largest ATI buyer in Q4 2025 was AQR Capital Management, an estimated $86.7M added.
- The largest ATI seller in Q4 2025 was Royal Bank of Canada, an estimated $118M sold.
Based on aggregated 13F filings for Q4 2025.