Citadel Advisors
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Citadel Advisors’s Allegro MicroSystems ALGM Stock Holding History

Citadel Advisors’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 		$1.44M Buy
45,600
+33,400
+274% +$1.15M ﹤0.01% 6815
2025
Q4 		$322K Sell
12,200
-27,200
-69% -$749K ﹤0.01% 9977
2025
Q3 		$1.15M Sell
39,400
-111,700
-74% -$3.61M ﹤0.01% 7222
2025
Q2 		$5.17M Buy
151,100
+58,500
+63% +$1.46M ﹤0.01% 4062
2025
Q1 		$2.33M Sell
92,600
-82,700
-47% -$2.06M ﹤0.01% 5250
2024
Q4 		$3.83M Buy
175,300
+18,400
+12% +$392K ﹤0.01% 4411
2024
Q3 		$3.66M Buy
156,900
+117,900
+302% +$2.96M ﹤0.01% 4457
2024
Q2 		$1.1M Sell
39,000
-159,900
-80% -$4.55M ﹤0.01% 6393
2024
Q1 		$5.36M Sell
198,900
-232,300
-54% -$6.71M ﹤0.01% 3850
2023
Q4 		$13.1M Sell
431,200
-45,800
-10% -$1.31M ﹤0.01% 2498
2023
Q3 		$15.2M Buy
477,000
+49,600
+12% +$2.02M ﹤0.01% 2173
2023
Q2 		$19.3M Buy
427,400
+309,200
+262% +$12.5M ﹤0.01% 1927
2023
Q1 		$5.67M Sell
118,200
-100,400
-46% -$4.09M ﹤0.01% 3592
2022
Q4 		$6.56M Sell
218,600
-81,900
-27% -$2.23M ﹤0.01% 3443
2022
Q3 		$6.57M Buy
300,500
+21,400
+8% +$497K ﹤0.01% 3423
2022
Q2 		$5.78M Sell
279,100
-691,000
-71% -$16.5M ﹤0.01% 3536
2022
Q1 		$27.6M Buy
+970,100
New +$27.7M 0.01% 1639

Other funds holding ALGM

Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $645B AUM 30.41% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
JP Morgan Chase
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
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
ClearBridge Investments
ClearBridge Investments New York $115B AUM 24.78% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Citadel Advisors's ALGM Position: Q1 2026 in Review

Citadel Advisors reduced its Allegro MicroSystems (ALGM) stake by 84% in Q1 2026, selling an estimated $74.5M and leaving 399,444 shares worth $12.6M. The position accounts for ﹤0.01% of the portfolio, ranked #2922.

Citadel Advisors first reported a position in ALGM in Q1 2021 and has held it in 19 quarters since. The position peaked at $109M in Q1 2025. 320 funds tracked by Wall St. Rank hold ALGM as of Q1 2026.

  • Citadel Advisors held 399,444 shares of Allegro MicroSystems worth $12.6M as of Q1 2026.
  • Citadel Advisors sold 2,161,076 Allegro MicroSystems shares in Q1 2026, an estimated $74.5M.
  • Allegro MicroSystems made up ﹤0.01% of Citadel Advisors's portfolio in Q1 2026, its #2922 holding.
  • Citadel Advisors first reported a position in Allegro MicroSystems in Q1 2021 and has held it in 19 quarters since.
  • Citadel Advisors's Allegro MicroSystems position peaked at $109M in Q1 2025.
  • 320 funds tracked by Wall St. Rank held Allegro MicroSystems as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.