Janus Henderson Group’s Allegro MicroSystems ALGM Stock Holding History

Janus Henderson Group’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	$1.81M	Hold	57,329	–	–	﹤0.01%	1404
2025 Q4	$1.51M	Hold	57,329	–	–	﹤0.01%	1476
2025 Q3	$1.67M	Hold	57,329	–	–	﹤0.01%	1406
2025 Q2	$1.96M	Sell	57,329 -269,863	-82%	-$6.72M	﹤0.01%	1292
2025 Q1	$8.13M	Buy	327,192 +269,863	+471%	+$6.74M	﹤0.01%	751
2024 Q4	$1.25M	Buy	57,329 +6,100	+12%	+$130K	﹤0.01%	1568
2024 Q3	$1.19M	Buy	51,229 +15,172	+42%	+$381K	﹤0.01%	1575
2024 Q2	$1.02M	Sell	36,057 -378,370	-91%	-$10.8M	﹤0.01%	1606
2024 Q1	$11.2M	Buy	414,427 +187,808	+83%	+$5.43M	0.01%	672
2023 Q4	$6.86M	Buy	226,619 +57,037	+34%	+$1.63M	﹤0.01%	737
2023 Q3	$5.42M	Sell	169,582 -54,978	-24%	-$2.23M	﹤0.01%	802
2023 Q2	$10.1M	Buy	224,560 +193,287	+618%	+$7.83M	0.01%	688
2023 Q1	$1.5M	Buy	31,273 +20,091	+180%	+$818K	﹤0.01%	1419
2022 Q4	$336K	Hold	11,182	–	–	﹤0.01%	1923
2022 Q3	$244K	Hold	11,182	–	–	﹤0.01%	1827
2022 Q2	$231K	Hold	11,182	–	–	﹤0.01%	2230
2022 Q1	$318K	Hold	11,182	–	–	﹤0.01%	2182
2021 Q4	$405K	Buy	+11,182	New	+$364K	﹤0.01%	2022

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

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

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

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

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

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

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

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

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Janus Henderson Group's ALGM Position: Q1 2026 in Review

Janus Henderson Group held its Allegro MicroSystems (ALGM) position steady in Q1 2026 at 57,329 shares worth $1.81M. The position accounts for ﹤0.01% of the portfolio, ranked #1404.

Janus Henderson Group first reported a position in ALGM in Q4 2021 and has held it in 18 quarters since. The position peaked at $11.2M in Q1 2024. 322 funds tracked by Wall St. Rank hold ALGM as of Q1 2026.

Janus Henderson Group held 57,329 shares of Allegro MicroSystems worth $1.81M as of Q1 2026.
Janus Henderson Group left its Allegro MicroSystems share count unchanged in Q1 2026.
Allegro MicroSystems made up ﹤0.01% of Janus Henderson Group's portfolio in Q1 2026, its #1404 holding.
Janus Henderson Group first reported a position in Allegro MicroSystems in Q4 2021 and has held it in 18 quarters since.
Janus Henderson Group's Allegro MicroSystems position peaked at $11.2M in Q1 2024.
322 funds tracked by Wall St. Rank held Allegro MicroSystems as of Q1 2026.

Based on Janus Henderson Group's 13F filing for Q1 2026, filed 15 May 2026.