Simplex Trading’s GSI Technology GSIT Stock Holding History

Simplex Trading’s Portfolio GSIT Stock Details GSIT Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$45.7K	Sell	8,900 -14,300	-62%	-$104K	﹤0.01%	5973
2025 Q4	$144K	Buy	23,200 +21,500	+1,265%	+$153K	﹤0.01%	4585
2025 Q3	$6K	Sell	1,700 -3,300	-66%	-$12.4K	﹤0.01%	8188
2025 Q2	$16K	Buy	5,000 +1,900	+61%	+$5.79K	﹤0.01%	6956
2025 Q1	$6K	Buy	3,100 +1,900	+158%	+$5.55K	﹤0.01%	7442
2024 Q4	$3K	Sell	1,200 -17,500	-94%	-$55.1K	﹤0.01%	7876
2024 Q3	$57K	Buy	18,700 +17,700	+1,770%	+$48.3K	﹤0.01%	5769
2024 Q2	$2K	Sell	1,000 -200	-17%	-$652	﹤0.01%	8273
2024 Q1	$4K	Sell	1,200 -10,800	-90%	-$31.2K	﹤0.01%	8119
2023 Q4	$31K	Sell	12,000 -23,600	-66%	-$59.3K	﹤0.01%	6532
2023 Q3	$96K	Buy	35,600 +26,400	+287%	+$103K	﹤0.01%	5127
2023 Q2	$50K	Buy	+9,200	New	+$39.9K	﹤0.01%	5837
2021 Q4	–	Sell	-1,400	Closed	-$7K	–	10829
2021 Q3	$7K	Hold	1,400	–	–	﹤0.01%	9109
2021 Q2	$7K	Buy	+1,400	New	+$8.63K	﹤0.01%	9280

Other funds holding GSIT

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

SBCM

Silverberg Bernstein Capital Management Armonk, New York $261M AUM 89.93% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return

Marshall Wace London, United Kingdom $100B AUM 35.1% 1-Year Est. Return

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

Two Sigma Investments New York $124B AUM 33.93% 1-Year Est. Return

Susquehanna International Group Bala Cynwyd, Pennsylvania $893B AUM 36.07% 1-Year Est. Return

Wells Fargo San Francisco, California $530B AUM 22.01% 1-Year Est. Return

Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

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

Simplex Trading's GSIT Position: Q1 2026 in Review

Simplex Trading reduced its GSI Technology (GSIT) stake by 81% in Q1 2026, selling an estimated $513K and leaving 16,567 shares worth $85.2K. The position accounts for ﹤0.01% of the portfolio, ranked #5282.

Simplex Trading first reported a position in GSIT in Q3 2019 and has held it in 20 quarters since. The position peaked at $542K in Q4 2025. 70 funds tracked by Wall St. Rank hold GSIT as of Q1 2026.

Simplex Trading held 16,567 shares of GSI Technology worth $85.2K as of Q1 2026.
Simplex Trading sold 70,747 GSI Technology shares in Q1 2026, an estimated $513K.
GSI Technology made up ﹤0.01% of Simplex Trading's portfolio in Q1 2026, its #5282 holding.
Simplex Trading first reported a position in GSI Technology in Q3 2019 and has held it in 20 quarters since.
Simplex Trading's GSI Technology position peaked at $542K in Q4 2025.
70 funds tracked by Wall St. Rank held GSI Technology as of Q1 2026.

Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.