Granahan Investment Management’s Allegro MicroSystems ALGM Stock Holding History

Granahan Investment Management’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 Q2	$12.9M	Sell	185,461 -29,540	-14%	-$1.38M	0.46%	54
2026 Q1	$6.78M	Buy	215,001 +125,144	+139%	+$4.31M	0.33%	73
2025 Q4	$2.37M	Buy	+89,857	New	+$2.47M	0.1%	141
2025 Q2	–	Sell	-31,956	Closed	-$803K	–	154
2025 Q1	$803K	Sell	31,956 -169,861	-84%	-$4.24M	0.04%	145
2024 Q4	$4.41M	Sell	201,817 -81,458	-29%	-$1.74M	0.18%	112
2024 Q3	$6.6M	Buy	283,275 +63,871	+29%	+$1.61M	0.26%	109
2024 Q2	$6.2M	Buy	219,404 +63,424	+41%	+$1.81M	0.25%	113
2024 Q1	$4.21M	Buy	+155,980	New	+$4.51M	0.15%	132

Other funds holding ALGM

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

Capital Research Global Investors Los Angeles, California $717B AUM 35.42% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return

ClearBridge Investments New York $121B AUM 27.52% 1-Year Est. Return

Granahan Investment Management's ALGM Position: Q2 2026 in Review

Granahan Investment Management reduced its Allegro MicroSystems (ALGM) stake by 14% in Q2 2026, selling an estimated $1.38M and leaving 185,461 shares worth $12.9M. The position accounts for 0.46% of the portfolio, ranked #54.

Granahan Investment Management first reported a position in ALGM in Q1 2024 and has held it in 8 quarters since. 374 funds tracked by Wall St. Rank hold ALGM as of Q2 2026.

Granahan Investment Management held 185,461 shares of Allegro MicroSystems worth $12.9M as of Q2 2026.
Granahan Investment Management sold 29,540 Allegro MicroSystems shares in Q2 2026, an estimated $1.38M.
Allegro MicroSystems made up 0.46% of Granahan Investment Management's portfolio in Q2 2026, its #54 holding.
Granahan Investment Management first reported a position in Allegro MicroSystems in Q1 2024 and has held it in 8 quarters since.
374 funds tracked by Wall St. Rank held Allegro MicroSystems as of Q2 2026.

Based on Granahan Investment Management's 13F filing for Q2 2026, filed 14 Aug 2026.