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673 hedge funds and large institutions have $18.5B invested in ATI in 2026 Q1 according to their latest regulatory filings, with 164 funds opening new positions, 244 increasing their positions, 190 reducing their positions, and 51 closing their positions.

New
Increased
Maintained
Reduced
Closed

222% more first-time investments, than exits

New positions opened: 164 | Existing positions closed: 51

106% more call options, than puts

Call options by funds: $159M | Put options by funds: $77.3M

28% more repeat investments, than reductions

Existing positions increased: 244 | Existing positions reduced: 190

25% more capital invested

Capital invested by funds: $14.8B → $18.5B (+$3.75B)

18% more funds holding

Funds holding: 570673 (+103)

8% more funds holding in top 10

Funds holding in top 10: 1213 (+1)

1.25% less ownership

Funds ownership: 94.57%93.33% (-1.2%)

Holders
673
Holders Change
+103
Holders Change %
+18.07%
% of All Funds
8.29%
Holding in Top 10
13
Holding in Top 10 Change
+1
Holding in Top 10 Change %
+8.33%
% of All Funds
0.16%
New
164
Increased
244
Reduced
190
Closed
51
Calls
$159M
Puts
$77.3M
Net Calls
+$82M
Net Calls Change
+$11.5M
Name Holding Trade Value Shares
Change
Change in
Stake
AG
101
Algert Global
California
$15.6M -$2.88M -20,691 -16%
CBU
102
CIBC Bancorp USA
Illinois
$15.6M +$14.9M +106,915 New
VAM
103
Vanguard Asset Management
$15.2M +$14.6M +104,824 New
GC
104
Guggenheim Capital
Illinois
$15.2M +$2.5M +17,956 +21%
TI
105
Tidal Investments
Wisconsin
$15.1M +$11.8M +84,639 +445%
FC
106
FACT Capital
New York
$15M
AAM
107
Advisors Asset Management
Colorado
$14.9M +$722K +5,184 +5%
SEIA
108
Signature Estate & Investment Advisors
California
$14.5M -$6.18M -44,377 -31%
Barclays
109
Barclays
United Kingdom
$14.4M -$5.6M -40,216 -29%
VCM
110
Voleon Capital Management
California
$14.4M +$13.3M +95,594 +2,872%
State Board of Administration of Florida Retirement System
111
State Board of Administration of Florida Retirement System
Florida
$14.3M -$233K -1,670 -2%
RA
112
Royce & Associates
New York
$14.3M -$4.65M -33,420 -25%
EMFAT
113
Emerald Mutual Fund Advisers Trust
Pennsylvania
$13.7M -$12.5M -89,708 -49%
First Trust Advisors
114
First Trust Advisors
Illinois
$13.5M +$1.65M +11,883 +15%
Stifel Financial
115
Stifel Financial
Missouri
$13.5M -$698K -5,011 -5%
MPM
116
Mountaineer Partners Management
New York
$13.4M -$5.17M -37,125 -29%
TCM
117
Tran Capital Management
California
$13.2M -$36.4M -261,460 -74%
SEI Investments
118
SEI Investments
Pennsylvania
$13.1M -$4.11M -29,540 -25%
WP
119
Woodline Partners
California
$13M -$53.2M -381,806 -81%
Tudor Investment Corp
120
Tudor Investment Corp
Connecticut
$12.9M +$12.4M +88,935 New
ECM
121
ExodusPoint Capital Management
New York
$12.8M +$9.83M +70,578 +400%
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
122
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Ontario, Canada
$12.7M +$4.68M +33,580 +63%
EIP
123
Epoch Investment Partners
New York
$12.5M -$654K -4,698 -5%
SFI
124
Susquehanna Fundamental Investments
Pennsylvania
$12M
TE
125
Tema ETFs
New York
$11.8M +$438K +3,144 +4%