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	$397K	Sell	12,600 -4,200	-25%	-$145K	﹤0.01%	8569
2025 Q4	$443K	Buy	16,800 +1,400	+9%	+$38.5K	﹤0.01%	7968
2025 Q3	$450K	Sell	15,400 -35,500	-70%	-$1.15M	﹤0.01%	8087
2025 Q2	$1.74M	Buy	50,900 +31,900	+168%	+$795K	﹤0.01%	4646
2025 Q1	$477K	Buy	19,000 +8,700	+84%	+$217K	﹤0.01%	6945
2024 Q4	$225K	Sell	10,300 -3,500	-25%	-$74.6K	﹤0.01%	8215
2024 Q3	$322K	Sell	13,800 -400	-3%	-$10.1K	﹤0.01%	7920
2024 Q2	$401K	Sell	14,200 -25,600	-64%	-$729K	﹤0.01%	7362
2024 Q1	$1.07M	Buy	39,800 +15,100	+61%	+$436K	﹤0.01%	5289
2023 Q4	$748K	Buy	24,700 +6,600	+36%	+$188K	﹤0.01%	6093
2023 Q3	$578K	Buy	18,100 +5,500	+44%	+$223K	﹤0.01%	6063
2023 Q2	$569K	Sell	12,600 -6,200	-33%	-$251K	﹤0.01%	6120
2023 Q1	$902K	Buy	+18,800	New	+$765K	﹤0.01%	5193

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.