Senator Investment Group’s ATI ATI Stock Holding History

Senator Investment Group’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	$15.8M	Sell	80,000 -65,000	-45%	-$11M	0.58%	39
2026 Q1	$21.1M	Sell	145,000 -180,000	-55%	-$25.1M	0.97%	38
2025 Q4	$37.3M	Hold	325,000	–	–	1.5%	24
2025 Q3	$26.4M	Sell	325,000 -425,000	-57%	-$34.4M	0.98%	36
2025 Q2	$64.8M	Sell	750,000 -462,500	-38%	-$31.7M	2.5%	15
2025 Q1	$63.1M	Buy	1,212,500 +493,944	+69%	+$28M	3.35%	6
2024 Q4	$39.5M	Buy	718,556 +28,556	+4%	+$1.68M	1.16%	32
2024 Q3	$46.2M	Sell	690,000 -201,138	-23%	-$12.5M	2.19%	20
2024 Q2	$49.4M	Buy	891,138 +558,138	+168%	+$31.3M	2.41%	16
2024 Q1	$17M	Buy	+333,000	New	+$15.1M	0.78%	41

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

Senator Investment Group's ATI Position: Q2 2026 in Review

Senator Investment Group reduced its ATI (ATI) stake by 45% in Q2 2026, selling an estimated $11M and leaving 80,000 shares worth $15.8M. The position accounts for 0.58% of the portfolio, ranked #39.

Senator Investment Group first reported a position in ATI in Q1 2024 and has held it in 10 quarters since. The position peaked at $64.8M in Q2 2025. 793 funds tracked by Wall St. Rank hold ATI as of Q2 2026.

Senator Investment Group held 80,000 shares of ATI worth $15.8M as of Q2 2026.
Senator Investment Group sold 65,000 ATI shares in Q2 2026, an estimated $11M.
ATI made up 0.58% of Senator Investment Group's portfolio in Q2 2026, its #39 holding.
Senator Investment Group first reported a position in ATI in Q1 2024 and has held it in 10 quarters since.
Senator Investment Group's ATI position peaked at $64.8M in Q2 2025.
793 funds tracked by Wall St. Rank held ATI as of Q2 2026.

Based on Senator Investment Group's 13F filing for Q2 2026, filed 12 Aug 2026.