Jane Street’s Allegro MicroSystems ALGM Stock Holding History

Jane Street’s Portfolio ALGM Stock Details ALGM Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$851K	Sell	27,000 -271,100	-91%	-$9.34M	﹤0.01%	6868
2025 Q4	$7.86M	Sell	298,100 -521,900	-64%	-$14.4M	﹤0.01%	2625
2025 Q3	$23.9M	Buy	820,000 +529,600	+182%	+$17.1M	﹤0.01%	1476
2025 Q2	$9.93M	Sell	290,400 -266,600	-48%	-$6.64M	﹤0.01%	2165
2025 Q1	$14M	Buy	+557,000	New	+$13.9M	﹤0.01%	1609
2024 Q4	–	Sell	-17,000	Closed	-$396K	–	9307
2024 Q3	$396K	Buy	+17,000	New	+$427K	﹤0.01%	7582
2024 Q2	–	Sell	-8,600	Closed	-$232K	–	9264
2024 Q1	$232K	Buy	+8,600	New	+$249K	﹤0.01%	7959
2023 Q4	–	Sell	-88,300	Closed	-$2.82M	–	9129
2023 Q3	$2.82M	Buy	88,300 +76,000	+618%	+$3.09M	﹤0.01%	3464
2023 Q2	$555K	Buy	12,300 +5,800	+89%	+$235K	﹤0.01%	6154
2023 Q1	$312K	Buy	+6,500	New	+$264K	﹤0.01%	7127

Other funds holding ALGM

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

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

Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

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

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

ClearBridge Investments New York $115B AUM 24.78% 1-Year Est. Return

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

Jane Street's ALGM Position: Q1 2026 in Review

Jane Street reduced its Allegro MicroSystems (ALGM) stake by 91% in Q1 2026, selling an estimated $5.71M and leaving 15,479 shares worth $488K. The position accounts for ﹤0.01% of the portfolio, ranked #8100.

Jane Street first reported a position in ALGM in Q4 2020 and has held it in 16 quarters since. The position peaked at $6.14M in Q3 2025. 320 funds tracked by Wall St. Rank hold ALGM as of Q1 2026.

Jane Street held 15,479 shares of Allegro MicroSystems worth $488K as of Q1 2026.
Jane Street sold 165,699 Allegro MicroSystems shares in Q1 2026, an estimated $5.71M.
Allegro MicroSystems made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #8100 holding.
Jane Street first reported a position in Allegro MicroSystems in Q4 2020 and has held it in 16 quarters since.
Jane Street's Allegro MicroSystems position peaked at $6.14M in Q3 2025.
320 funds tracked by Wall St. Rank held Allegro MicroSystems as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.