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	$1.06M	Buy	5,400 +2,100	+64%	+$356K	﹤0.01%	3570
2026 Q1	$480K	Sell	3,300 -300	-8%	-$41.8K	﹤0.01%	3768
2025 Q4	$413K	Buy	+3,600	New	+$351K	﹤0.01%	3420
2019 Q1	–	Sell	-33,900	Closed	-$738K	–	3003
2018 Q4	$738K	Buy	33,900 +14,000	+70%	+$363K	﹤0.01%	1846
2018 Q3	$588K	Buy	+19,900	New	+$535K	﹤0.01%	2336
2018 Q2	–	Sell	-25,700	Closed	-$609K	–	3292
2018 Q1	$609K	Buy	25,700 +14,700	+134%	+$394K	﹤0.01%	2357
2017 Q4	$266K	Sell	11,000 -39,400	-78%	-$938K	﹤0.01%	2789
2017 Q3	$1.21M	Sell	50,400 -76,800	-60%	-$1.52M	﹤0.01%	1615
2017 Q2	$2.16M	Buy	+127,200	New	+$2.14M	0.01%	1361
2016 Q3	–	Sell	-10,000	Closed	-$128K	–	3077
2016 Q2	$128K	Buy	+10,000	New	+$143K	﹤0.01%	2804
2015 Q4	–	Sell	-26,000	Closed	-$369K	–	2659
2015 Q3	$369K	Buy	+26,000	New	+$538K	﹤0.01%	1690

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.