Parallax Volatility Advisers’s Seagate STX Stock Holding History

Parallax Volatility Advisers’s Portfolio STX Stock Details STX Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$4.9M	Buy	+12,500	New	+$4.77M	0.01%	580
2025 Q4	–	Sell	-12,500	Closed	-$2.95M	–	1821
2025 Q3	$2.95M	Buy	+12,500	New	+$2.13M	﹤0.01%	811
2025 Q1	–	Sell	-8,300	Closed	-$716K	–	2099
2024 Q4	$716K	Sell	8,300 -171,700	-95%	-$17.3M	﹤0.01%	1425
2024 Q3	$19.7M	Buy	180,000 +72,200	+67%	+$7.38M	0.04%	344
2024 Q2	$11.1M	Buy	107,800 +20,600	+24%	+$1.92M	0.02%	444
2024 Q1	$8.11M	Sell	87,200 -87,800	-50%	-$7.72M	0.02%	570
2023 Q4	$14.9M	Sell	175,000 -8,200	-4%	-$612K	0.03%	471
2023 Q3	$12.1M	Sell	183,200 -74,900	-29%	-$4.82M	0.03%	481
2023 Q2	$16M	Sell	258,100 -13,500	-5%	-$824K	0.03%	401
2023 Q1	$18M	Sell	271,600 -489,800	-64%	-$31.2M	0.04%	409
2022 Q4	$40.1M	Sell	761,400 -378,200	-33%	-$20.1M	0.06%	327
2022 Q3	$60.7M	Buy	1,139,600 +479,800	+73%	+$34.7M	0.09%	229
2022 Q2	$47.1M	Buy	659,800 +3,800	+0.6%	+$309K	0.04%	282
2022 Q1	$59M	Buy	656,000 +175,300	+36%	+$17.9M	0.03%	236
2021 Q4	$54.3M	Buy	480,700 +307,600	+178%	+$29.9M	0.06%	210
2021 Q3	$14.3M	Sell	173,100 -82,000	-32%	-$7.13M	0.01%	536
2021 Q2	$22.4M	Buy	255,100 +228,300	+852%	+$20.6M	0.03%	342
2021 Q1	$2.06M	Sell	26,800 -166,200	-86%	-$11.6M	﹤0.01%	685
2020 Q4	$12M	Sell	193,000 -151,900	-44%	-$8.54M	0.01%	669
2020 Q3	$17M	Buy	344,900 +106,400	+45%	+$5M	0.01%	781
2020 Q2	$11.5M	Buy	238,500 +107,000	+81%	+$5.37M	0.01%	720
2020 Q1	$6.42M	Sell	131,500 -247,600	-65%	-$13.2M	0.01%	777
2019 Q4	$22.6M	Buy	379,100 +232,000	+158%	+$13.3M	0.03%	390
2019 Q3	$7.91M	Sell	147,100 -94,500	-39%	-$4.64M	0.01%	665
2019 Q2	$11.4M	Sell	241,600 -53,000	-18%	-$2.47M	0.01%	490
2019 Q1	$14.1M	Sell	294,600 -222,800	-43%	-$9.88M	0.02%	389
2018 Q4	$20M	Buy	517,400 +483,200	+1,413%	+$20.3M	0.03%	340
2018 Q3	$1.62M	Sell	34,200 -82,500	-71%	-$4.41M	﹤0.01%	1094
2018 Q2	$6.59M	Buy	116,700 +116,200	+23,240%	+$6.72M	0.01%	544
2018 Q1	$29K	Buy	+500	New	+$26.6K	﹤0.01%	1662
2017 Q3	–	Sell	-98,900	Closed	-$3.83M	–	3217
2017 Q2	$3.83M	Buy	98,900 +42,900	+77%	+$1.87M	0.01%	642
2017 Q1	$2.57M	Buy	56,000 +48,400	+637%	+$2.15M	0.01%	781
2016 Q4	$289K	Sell	7,600 -80,900	-91%	-$3.02M	﹤0.01%	1742
2016 Q3	$3.41M	Buy	88,500 +49,700	+128%	+$1.61M	0.01%	823
2016 Q2	$947K	Sell	38,800 -70,700	-65%	-$1.71M	﹤0.01%	1209
2016 Q1	$3.77M	Sell	109,500 -1,200	-1%	-$38.7K	0.01%	670
2015 Q4	$4.06M	Sell	110,700 -85,000	-43%	-$3.24M	0.01%	755
2015 Q3	$8.76M	Buy	195,700 +185,400	+1,800%	+$8.97M	0.02%	496
2015 Q2	$490K	Sell	10,300 -8,200	-44%	-$453K	﹤0.01%	1635
2015 Q1	$961K	Sell	18,500 -358,100	-95%	-$21.3M	﹤0.01%	1284
2014 Q4	$25M	Buy	376,600 +233,200	+163%	+$14.5M	0.07%	252
2014 Q3	$8.22M	Sell	143,400 -417,200	-74%	-$24.7M	0.03%	527
2014 Q2	$31.9M	Buy	560,600 +447,500	+396%	+$24.1M	0.13%	120
2014 Q1	$6.36M	Buy	113,100 +77,100	+214%	+$4.13M	0.04%	335
2013 Q4	$2.02M	Sell	36,000 -165,100	-82%	-$8.17M	0.01%	657
2013 Q3	$8.8M	Sell	201,100 -309,100	-61%	-$13M	0.05%	276
2013 Q2	$22.9M	Buy	+510,200	New	+$20.5M	0.11%	155

Other funds holding STX

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

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Sanders Capital West Palm Beach, Florida $83.9B AUM 37.89% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

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

JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return

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

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Parallax Volatility Advisers's STX Position: Q1 2026 in Review

Parallax Volatility Advisers sold out of Seagate (STX) in Q1 2026, closing a stake of 27,658 shares — an estimated $10.6M sold.

Parallax Volatility Advisers first reported a position in STX in Q2 2013 and held it in 28 quarters. The position peaked at $14.7M in Q3 2021. 1,455 funds tracked by Wall St. Rank hold STX as of Q1 2026.

Parallax Volatility Advisers reported no remaining Seagate position as of Q1 2026 after selling out during the quarter.
Parallax Volatility Advisers sold 27,658 Seagate shares in Q1 2026, an estimated $10.6M.
Parallax Volatility Advisers first reported a position in Seagate in Q2 2013 and held it in 28 quarters.
Parallax Volatility Advisers's Seagate position peaked at $14.7M in Q3 2021.
1,455 funds tracked by Wall St. Rank held Seagate as of Q1 2026.

Based on Parallax Volatility Advisers's 13F filing for Q1 2026, filed 15 May 2026.