Millennium Management’s ATI ATI Stock Holding History

Millennium Management’s Portfolio ATI Stock Details ATI Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$1.1M	Buy	5,600 +500	+10%	+$84.8K	﹤0.01%	4250
2026 Q1	$742K	Sell	5,100 -5,500	-52%	-$766K	﹤0.01%	4575
2025 Q4	$1.22M	Buy	+10,600	New	+$1.03M	﹤0.01%	4350
2015 Q3	–	Sell	-65,000	Closed	-$1.96M	–	3442
2015 Q2	$1.96M	Buy	+65,000	New	+$2.15M	﹤0.01%	1942
2014 Q4	–	Sell	-5,500	Closed	-$204K	–	3891
2014 Q3	$204K	Buy	+5,500	New	+$231K	﹤0.01%	3414

Other funds holding ATI

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Capital World Investors Los Angeles, California $846B AUM 46.74% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Capital Research Global Investors Los Angeles, California $717B AUM 35.42% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Capital International Investors Los Angeles, California $484B AUM 34.9% 1-Year Est. Return

Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Millennium Management's ATI Position: Q2 2026 in Review

Millennium Management increased its ATI (ATI) stake by 41% in Q2 2026, buying an estimated $43.4M and bringing the position to 875,260 shares worth $173M. The position accounts for 0.06% of the portfolio, ranked #289.

Millennium Management first reported a position in ATI in Q2 2013 and has held it in 51 quarters since. 793 funds tracked by Wall St. Rank hold ATI as of Q2 2026.

Millennium Management held 875,260 shares of ATI worth $173M as of Q2 2026.
Millennium Management bought 256,020 ATI shares in Q2 2026, an estimated $43.4M.
ATI made up 0.06% of Millennium Management's portfolio in Q2 2026, its #289 holding.
Millennium Management first reported a position in ATI in Q2 2013 and has held it in 51 quarters since.
793 funds tracked by Wall St. Rank held ATI as of Q2 2026.

Based on Millennium Management's 13F filing for Q2 2026, filed 14 Aug 2026.