Twin Tree Management’s ATI ATI Stock Holding History

Twin Tree 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	$1.6M	Sell	8,097 -6,883	-46%	-$1.17M	0.03%	653
2026 Q1	$2.18M	Buy	+14,980	New	+$2.09M	0.05%	450
2025 Q2	–	Sell	-5,309	Closed	-$363K	–	1595
2025 Q1	$276K	Buy	+5,309	New	+$301K	﹤0.01%	1376
2024 Q4	–	Sell	-10,951	Closed	-$733K	–	1564
2024 Q3	$733K	Buy	+10,951	New	+$680K	﹤0.01%	1260
2024 Q1	–	Sell	-32,684	Closed	-$1.49M	–	1256
2023 Q4	$1.49M	Buy	+32,684	New	+$1.36M	﹤0.01%	1104
2023 Q3	–	Sell	-706	Closed	-$31.2K	–	1224
2023 Q2	$31.2K	Buy	+706	New	+$27K	﹤0.01%	1168

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

Twin Tree Management's ATI Position: Q2 2026 in Review

Twin Tree Management reduced its ATI (ATI) stake by 46% in Q2 2026, selling an estimated $1.17M and leaving 8,097 shares worth $1.6M. The position accounts for 0.03% of the portfolio, ranked #653.

Twin Tree Management first reported a position in ATI in Q2 2023 and has held it in 6 quarters since. The position peaked at $2.18M in Q1 2026. 791 funds tracked by Wall St. Rank hold ATI as of Q2 2026.

Twin Tree Management held 8,097 shares of ATI worth $1.6M as of Q2 2026.
Twin Tree Management sold 6,883 ATI shares in Q2 2026, an estimated $1.17M.
ATI made up 0.03% of Twin Tree Management's portfolio in Q2 2026, its #653 holding.
Twin Tree Management first reported a position in ATI in Q2 2023 and has held it in 6 quarters since.
Twin Tree Management's ATI position peaked at $2.18M in Q1 2026.
791 funds tracked by Wall St. Rank held ATI as of Q2 2026.

Based on Twin Tree Management's 13F filing for Q2 2026, filed 12 Aug 2026.