Magnetar Financial’s ATI ATI Stock Holding History

Magnetar Financial’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	$1.17M	Buy	+5,931	New	+$1.01M	0.01%	411
2025 Q4	–	Sell	-45,664	Closed	-$3.71M	–	930
2025 Q3	$3.71M	Buy	+45,664	New	+$3.7M	0.02%	273
2025 Q2	–	Sell	-42,401	Closed	-$2.21M	–	896
2025 Q1	$2.21M	Buy	42,401 +38,051	+875%	+$2.16M	0.03%	266
2024 Q4	$239K	Buy	+4,350	New	+$257K	0.01%	523
2024 Q3	–	Sell	-41,033	Closed	-$2.28M	–	530
2024 Q2	$2.28M	Buy	+41,033	New	+$2.3M	0.05%	199
2020 Q3	–	Sell	-20,000	Closed	-$204K	–	648
2020 Q2	$204K	Buy	+20,000	New	+$173K	0.01%	398
2018 Q2	–	Sell	-24,047	Closed	-$569K	–	501
2018 Q1	$569K	Sell	24,047 -24,678	-51%	-$662K	0.01%	307
2017 Q4	$1.18M	Buy	+48,725	New	+$1.16M	0.02%	192

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

Magnetar Financial's ATI Position: Q2 2026 in Review

Magnetar Financial opened a new position in ATI (ATI) in Q2 2026: 5,931 shares worth $1.17M. The stake represents 0.01% of the portfolio and ranks #411 among its holdings. This is a return to the name: Magnetar Financial previously reported a position in ATI as recently as Q3 2025.

Magnetar Financial first reported a position in ATI in Q4 2017 and has held it in 8 quarters since. The position peaked at $3.71M in Q3 2025. 793 funds tracked by Wall St. Rank hold ATI as of Q2 2026.

Magnetar Financial held 5,931 shares of ATI worth $1.17M as of Q2 2026.
ATI was a new Magnetar Financial position in Q2 2026.
ATI made up 0.01% of Magnetar Financial's portfolio in Q2 2026, its #411 holding.
Magnetar Financial first reported a position in ATI in Q4 2017 and has held it in 8 quarters since.
Magnetar Financial's ATI position peaked at $3.71M in Q3 2025.
793 funds tracked by Wall St. Rank held ATI as of Q2 2026.

Based on Magnetar Financial's 13F filing for Q2 2026, filed 14 Aug 2026.