Two Sigma Investments’s ATI ATI Stock Holding History

Two Sigma Investments’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 Q1	$495K	Sell	3,400 -600	-15%	-$83.5K	﹤0.01%	3753
2025 Q4	$459K	Buy	+4,000	New	+$390K	﹤0.01%	3353
2022 Q4	–	Sell	-50,000	Closed	-$1.33M	–	2794
2022 Q3	$1.33M	Hold	50,000	–	–	﹤0.01%	1343
2022 Q2	$1.14M	Sell	50,000 -300,000	-86%	-$7.91M	﹤0.01%	1489
2022 Q1	$9.39M	Buy	350,000 +50,000	+17%	+$1.16M	0.03%	634
2021 Q4	$4.78M	Buy	+300,000	New	+$4.82M	0.01%	1220
2019 Q3	–	Sell	-9,000	Closed	-$227K	–	3436
2019 Q2	$227K	Buy	+9,000	New	+$219K	﹤0.01%	3024
2019 Q1	–	Sell	-28,000	Closed	-$610K	–	3004
2018 Q4	$610K	Sell	28,000 -700	-2%	-$18.1K	﹤0.01%	1974
2018 Q3	$848K	Buy	+28,700	New	+$772K	﹤0.01%	2105
2018 Q2	–	Sell	-15,300	Closed	-$362K	–	3293
2018 Q1	$362K	Buy	+15,300	New	+$410K	﹤0.01%	2676
2017 Q4	–	Sell	-49,300	Closed	-$1.18M	–	3074
2017 Q3	$1.18M	Sell	49,300 -50,700	-51%	-$1M	﹤0.01%	1632
2017 Q2	$1.7M	Buy	+100,000	New	+$1.68M	0.01%	1534
2015 Q4	–	Sell	-11,000	Closed	-$156K	–	2660
2015 Q3	$156K	Buy	+11,000	New	+$228K	﹤0.01%	2027

Other funds holding ATI

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Capital Research Global Investors Los Angeles, California $645B AUM 30.41% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Capital International Investors Los Angeles, California $427B AUM 29.17% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

Capital World Investors Los Angeles, California $733B AUM 35.63% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

Viking Global Investors Stamford, Connecticut $35.7B AUM 21.3% 1-Year Est. Return

Two Sigma Investments's ATI Position: Q1 2026 in Review

Two Sigma Investments increased its ATI (ATI) stake by 804% in Q1 2026, buying an estimated $2.2M and bringing the position to 17,775 shares worth $2.59M. The position accounts for ﹤0.01% of the portfolio, ranked #2571.

Two Sigma Investments first reported a position in ATI in Q4 2015 and has held it in 33 quarters since. The position peaked at $59.3M in Q2 2024. 673 funds tracked by Wall St. Rank hold ATI as of Q1 2026.

Two Sigma Investments held 17,775 shares of ATI worth $2.59M as of Q1 2026.
Two Sigma Investments bought 15,808 ATI shares in Q1 2026, an estimated $2.2M.
ATI made up ﹤0.01% of Two Sigma Investments's portfolio in Q1 2026, its #2571 holding.
Two Sigma Investments first reported a position in ATI in Q4 2015 and has held it in 33 quarters since.
Two Sigma Investments's ATI position peaked at $59.3M in Q2 2024.
673 funds tracked by Wall St. Rank held ATI as of Q1 2026.

Based on Two Sigma Investments's 13F filing for Q1 2026, filed 15 May 2026.