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	Buy	8,400 +2,600	+45%	+$362K	﹤0.01%	2525
2025 Q4	$666K	Sell	5,800 -64,100	-92%	-$6.25M	﹤0.01%	3238
2025 Q3	$5.69M	Sell	69,900 -14,100	-17%	-$1.14M	0.01%	1373
2025 Q2	$7.25M	Buy	84,000 +77,200	+1,135%	+$5.28M	0.02%	1039
2025 Q1	$354K	Buy	6,800 +1,600	+31%	+$90.8K	﹤0.01%	3435
2024 Q4	$286K	Sell	5,200 -2,200	-30%	-$130K	﹤0.01%	3629
2024 Q3	$495K	Sell	7,400 -4,500	-38%	-$279K	﹤0.01%	2861
2024 Q2	$660K	Sell	11,900 -16,800	-59%	-$941K	﹤0.01%	2327
2024 Q1	$1.47M	Buy	28,700 +21,200	+283%	+$959K	0.01%	1744
2023 Q4	$341K	Sell	7,500 -5,900	-44%	-$245K	﹤0.01%	3389
2023 Q3	$551K	Sell	13,400 -13,400	-50%	-$596K	﹤0.01%	2813
2023 Q2	$1.19M	Sell	26,800 -9,200	-26%	-$352K	﹤0.01%	2199
2023 Q1	$1.42M	Buy	36,000 +33,200	+1,186%	+$1.25M	0.01%	1827
2022 Q4	$83.6K	Sell	2,800 -11,200	-80%	-$328K	﹤0.01%	4587
2022 Q3	$373K	Sell	14,000 -25,300	-64%	-$704K	﹤0.01%	3514
2022 Q2	$893K	Sell	39,300 -91,000	-70%	-$2.4M	﹤0.01%	2865
2022 Q1	$3.5M	Buy	130,300 +120,700	+1,257%	+$2.8M	﹤0.01%	1844
2021 Q4	$153K	Sell	9,600 -10,900	-53%	-$175K	﹤0.01%	5358
2021 Q3	$341K	Sell	20,500 -46,900	-70%	-$887K	﹤0.01%	4609
2021 Q2	$1.41M	Sell	67,400 -44,200	-40%	-$1.01M	﹤0.01%	3023
2021 Q1	$2.35M	Buy	111,600 +52,600	+89%	+$1.03M	﹤0.01%	2286
2020 Q4	$989K	Buy	59,000 +52,700	+837%	+$669K	﹤0.01%	2653
2020 Q3	$55K	Sell	6,300 -5,100	-45%	-$46.9K	﹤0.01%	4585
2020 Q2	$116K	Sell	11,400 -900	-7%	-$7.8K	﹤0.01%	3782
2020 Q1	$105K	Sell	12,300 -77,200	-86%	-$1.23M	﹤0.01%	3254
2019 Q4	$1.85M	Buy	89,500 +32,100	+56%	+$696K	0.01%	1340
2019 Q3	$1.16M	Sell	57,400 -23,100	-29%	-$489K	0.01%	1625
2019 Q2	$2.03M	Sell	80,500 -20,000	-20%	-$487K	0.02%	1076
2019 Q1	$2.57M	Buy	100,500 +27,400	+37%	+$722K	0.03%	761
2018 Q4	$1.59M	Sell	73,100 -30,800	-30%	-$799K	0.01%	1175
2018 Q3	$3.07M	Buy	103,900 +2,500	+2%	+$67.2K	0.02%	856
2018 Q2	$2.55M	Buy	101,400 +15,600	+18%	+$422K	0.02%	958
2018 Q1	$2.03M	Buy	85,800 +8,400	+11%	+$225K	0.02%	997
2017 Q4	$1.87M	Buy	77,400 +23,400	+43%	+$557K	0.01%	1227
2017 Q3	$1.29M	Buy	54,000 +37,000	+218%	+$732K	0.01%	1377
2017 Q2	$289K	Sell	17,000 -16,200	-49%	-$273K	﹤0.01%	2370
2017 Q1	$596K	Buy	33,200 +11,000	+50%	+$207K	0.01%	1723
2016 Q4	$354K	Buy	22,200 +18,500	+500%	+$307K	﹤0.01%	2013
2016 Q3	$67K	Sell	3,700 -7,100	-66%	-$118K	﹤0.01%	3167
2016 Q2	$138K	Sell	10,800 -39,600	-79%	-$566K	﹤0.01%	2650
2016 Q1	$822K	Buy	50,400 +37,700	+297%	+$459K	0.01%	1326
2015 Q4	$143K	Buy	12,700 +3,300	+35%	+$45.4K	﹤0.01%	2747
2015 Q3	$133K	Buy	9,400 +6,000	+176%	+$124K	﹤0.01%	2828
2015 Q2	$103K	Sell	3,400 -18,900	-85%	-$625K	﹤0.01%	3062
2015 Q1	$669K	Buy	22,300 +15,900	+248%	+$494K	0.01%	1382
2014 Q4	$223K	Sell	6,400 -10,000	-61%	-$330K	﹤0.01%	2223
2014 Q3	$608K	Buy	16,400 +2,600	+19%	+$109K	0.01%	1465
2014 Q2	$622K	Sell	13,800 -22,400	-62%	-$917K	0.01%	1474
2014 Q1	$1.36M	Buy	36,200 +16,600	+85%	+$558K	0.02%	863
2013 Q4	$698K	Sell	19,600 -9,500	-33%	-$313K	0.01%	1388
2013 Q3	$888K	Buy	29,100 +22,000	+310%	+$616K	0.02%	1106
2013 Q2	$187K	Buy	+7,100	New	+$200K	﹤0.01%	2234

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.