ATI
795 hedge funds and large institutions have $25.1B invested in ATI in 2026 Q2 according to their latest regulatory filings, with 177 funds opening new positions, 306 increasing their positions, 223 reducing their positions, and 54 closing their positions.
228% more first-time investments, than exits
New positions opened: 177 | Existing positions closed: 54
37% more repeat investments, than reductions
Existing positions increased: 306 | Existing positions reduced: 223
37% more call options, than puts
Call options by funds: $192M | Put options by funds: $140M
35% more capital invested
Capital invested by funds: $18.5B → $25.1B (+$6.56B)
31% more funds holding in top 10
Funds holding in top 10: 13 → 17 (+4)
17% more funds holding
Funds holding: 678 → 795 (+117)
0.13% more ownership
Funds ownership: 93.35% → 93.48% (+0.13%)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
BlackRock
New York
|
+$384M |
| 2 |
Qube Research & Technologies (QRT)
London,
United Kingdom
|
+$218M |
| 3 |
Bessemer Group
Woodbridge,
New Jersey
|
+$162M |
| 4 |
Polen Capital Management
Boca Raton,
Florida
|
+$139M |
| 5 |
T. Rowe Price Associates
Baltimore,
Maryland
|
+$117M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Viking Global Investors
Stamford,
Connecticut
|
-$369M |
| 2 |
Capital International Investors
Los Angeles,
California
|
-$367M |
| 3 |
Capital Research Global Investors
Los Angeles,
California
|
-$181M |
| 4 |
UBS Group
Zurich,
Switzerland
|
-$162M |
| 5 |
D.E. Shaw & Co
New York
|
-$157M |
ATI Hedge Fund Activity: Q2 2026 in Review
795 of the 8,349 institutional investors tracked by Wall St. Rank reported a position in ATI (ATI) for Q2 2026, worth a combined $25.1B — up 35% from $18.5B a quarter earlier.
Buyers outnumbered sellers: 177 funds opened new ATI positions and 54 closed out — a net gain of 123 holders — while 306 added to existing stakes and 223 trimmed.
The largest buyer was BlackRock, adding an estimated $384M. The largest seller was Viking Global Investors, cutting an estimated $369M.
- 795 institutional investors held ATI (ATI) as of Q2 2026, up from 678 in Q1 2026.
- Funds reported $25.1B of ATI stock for Q2 2026, up 35% quarter-over-quarter.
- 177 funds opened new ATI positions in Q2 2026 and 54 closed out, a net change of +123 holders.
- The largest ATI buyer in Q2 2026 was BlackRock, an estimated $384M added.
- The largest ATI seller in Q2 2026 was Viking Global Investors, an estimated $369M sold.
Based on aggregated 13F filings for Q2 2026.