Group One Trading’s ATI ATI Stock Holding History

Group One Trading’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	$1.22M	Sell	8,400 -3,200	-28%	-$446K	﹤0.01%	2526
2025 Q4	$1.33M	Sell	11,600 -23,400	-67%	-$2.28M	﹤0.01%	2638
2025 Q3	$2.85M	Buy	35,000 +20,100	+135%	+$1.63M	0.01%	1970
2025 Q2	$1.29M	Buy	14,900 +13,800	+1,255%	+$945K	﹤0.01%	2539
2025 Q1	$57.2K	Buy	+1,100	New	+$62.4K	﹤0.01%	5055
2024 Q4	–	Sell	-38,700	Closed	-$2.59M	–	7242
2024 Q3	$2.59M	Buy	38,700 +32,400	+514%	+$2.01M	0.01%	1524
2024 Q2	$349K	Buy	6,300 +4,400	+232%	+$247K	﹤0.01%	2896
2024 Q1	$97.2K	Buy	1,900 +100	+6%	+$4.52K	﹤0.01%	4187
2023 Q4	$81.8K	Sell	1,800 -16,000	-90%	-$664K	﹤0.01%	4632
2023 Q3	$732K	Sell	17,800 -1,300	-7%	-$57.8K	﹤0.01%	2560
2023 Q2	$845K	Sell	19,100 -3,100	-14%	-$119K	﹤0.01%	2511
2023 Q1	$876K	Buy	22,200 +9,200	+71%	+$347K	﹤0.01%	2252
2022 Q4	$388K	Buy	13,000 +9,300	+251%	+$272K	﹤0.01%	3273
2022 Q3	$98K	Sell	3,700 -68,300	-95%	-$1.9M	﹤0.01%	4793
2022 Q2	$1.64M	Sell	72,000 -2,800	-4%	-$73.8K	﹤0.01%	2241
2022 Q1	$2.01M	Buy	74,800 +1,200	+2%	+$27.8K	﹤0.01%	2391
2021 Q4	$1.17M	Buy	73,600 +68,400	+1,315%	+$1.1M	﹤0.01%	3190
2021 Q3	$86K	Sell	5,200 -44,800	-90%	-$847K	﹤0.01%	6052
2021 Q2	$1.04M	Buy	50,000 +4,700	+10%	+$108K	﹤0.01%	3367
2021 Q1	$954K	Buy	45,300 +39,800	+724%	+$778K	﹤0.01%	3291
2020 Q4	$92K	Sell	5,500 -59,000	-91%	-$749K	﹤0.01%	4628
2020 Q3	$562K	Sell	64,500 -2,700	-4%	-$24.9K	﹤0.01%	2739
2020 Q2	$685K	Buy	67,200 +17,500	+35%	+$152K	﹤0.01%	2362
2020 Q1	$422K	Sell	49,700 -22,000	-31%	-$351K	﹤0.01%	2175
2019 Q4	$1.48M	Buy	71,700 +56,500	+372%	+$1.22M	0.01%	1540
2019 Q3	$308K	Sell	15,200 -4,500	-23%	-$95.2K	﹤0.01%	2749
2019 Q2	$496K	Sell	19,700 -1,700	-8%	-$41.4K	﹤0.01%	2136
2019 Q1	$547K	Buy	21,400 +1,200	+6%	+$31.6K	0.01%	1879
2018 Q4	$440K	Sell	20,200 -6,300	-24%	-$163K	﹤0.01%	2062
2018 Q3	$783K	Sell	26,500 -42,000	-61%	-$1.13M	0.01%	1900
2018 Q2	$1.72M	Buy	68,500 +2,100	+3%	+$56.8K	0.01%	1257
2018 Q1	$1.57M	Buy	66,400 +23,700	+56%	+$636K	0.02%	1175
2017 Q4	$1.03M	Sell	42,700 -6,500	-13%	-$155K	0.01%	1675
2017 Q3	$1.18M	Sell	49,200 -18,100	-27%	-$358K	0.01%	1439
2017 Q2	$1.15M	Buy	67,300 +32,000	+91%	+$538K	0.01%	1342
2017 Q1	$634K	Sell	35,300 -6,600	-16%	-$124K	0.01%	1681
2016 Q4	$667K	Sell	41,900 -32,200	-43%	-$535K	0.01%	1589
2016 Q3	$1.34M	Buy	74,100 +20,000	+37%	+$331K	0.01%	1084
2016 Q2	$690K	Buy	54,100 +44,200	+446%	+$632K	0.01%	1499
2016 Q1	$161K	Sell	9,900 -1,000	-9%	-$12.2K	﹤0.01%	2470
2015 Q4	$123K	Buy	10,900 +2,500	+30%	+$34.4K	﹤0.01%	2850
2015 Q3	$119K	Buy	8,400 +1,600	+24%	+$33.1K	﹤0.01%	2920
2015 Q2	$205K	Buy	6,800 +600	+10%	+$19.8K	﹤0.01%	2508
2015 Q1	$186K	Sell	6,200 -13,300	-68%	-$413K	﹤0.01%	2423
2014 Q4	$678K	Sell	19,500 -400	-2%	-$13.2K	0.01%	1328
2014 Q3	$738K	Buy	19,900 +900	+5%	+$37.8K	0.01%	1311
2014 Q2	$857K	Buy	19,000 +6,000	+46%	+$246K	0.01%	1247
2014 Q1	$490K	Sell	13,000 -27,900	-68%	-$938K	0.01%	1654
2013 Q4	$1.46M	Buy	40,900 +8,400	+26%	+$276K	0.02%	847
2013 Q3	$992K	Buy	32,500 +22,000	+210%	+$616K	0.02%	1027
2013 Q2	$276K	Buy	+10,500	New	+$296K	0.01%	1865

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

Group One Trading's ATI Position: Q1 2026 in Review

Group One Trading sold out of ATI (ATI) in Q1 2026, closing a stake of 3,651 shares — an estimated $508K sold.

Group One Trading first reported a position in ATI in Q2 2013 and held it in 20 quarters. The position peaked at $1.35M in Q4 2019. 673 funds tracked by Wall St. Rank hold ATI as of Q1 2026.

Group One Trading reported no remaining ATI position as of Q1 2026 after selling out during the quarter.
Group One Trading sold 3,651 ATI shares in Q1 2026, an estimated $508K.
Group One Trading first reported a position in ATI in Q2 2013 and held it in 20 quarters.
Group One Trading's ATI position peaked at $1.35M in Q4 2019.
673 funds tracked by Wall St. Rank held ATI as of Q1 2026.

Based on Group One Trading's 13F filing for Q1 2026, filed 13 May 2026.