John Overdeck’s ATI ATI Stock Holding History

John Overdeck’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	$1.46M	Buy	7,400 +4,000	+118%	+$678K	﹤0.01%	3300
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 $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

John Overdeck's ATI Position: Q2 2026 in Review

John Overdeck increased its ATI (ATI) stake by 3,482% in Q2 2026, buying an estimated $105M and bringing the position to 636,671 shares worth $125M. The position accounts for 0.09% of the portfolio, ranked #250.

John Overdeck first reported a position in ATI in Q4 2015 and has held it in 34 quarters since. 788 funds tracked by Wall St. Rank hold ATI as of Q2 2026.

John Overdeck held 636,671 shares of ATI worth $125M as of Q2 2026.
John Overdeck bought 618,896 ATI shares in Q2 2026, an estimated $105M.
ATI made up 0.09% of John Overdeck's portfolio in Q2 2026, its #250 holding.
John Overdeck first reported a position in ATI in Q4 2015 and has held it in 34 quarters since.
788 funds tracked by Wall St. Rank held ATI as of Q2 2026.

Based on Two Sigma Investments's 13F filing for Q2 2026, filed 14 Aug 2026.