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 		$12.6M Sell
399,444
-2,161,076
-84% -$74.5M ﹤0.01% 2922
2025
Q4 		$67.5M Buy
2,560,520
+2,228,889
+672% +$61.3M 0.01% 1146
2025
Q3 		$9.68M Sell
331,631
-1,187,777
-78% -$38.4M ﹤0.01% 3327
2025
Q2 		$51.9M Sell
1,519,408
-2,814,205
-65% -$70.1M 0.01% 1220
2025
Q1 		$109M Buy
4,333,613
+2,758,171
+175% +$68.8M 0.02% 644
2024
Q4 		$34.4M Buy
1,575,442
+235,410
+18% +$5.01M 0.01% 1613
2024
Q3 		$31.2M Buy
1,340,032
+1,227,857
+1,095% +$30.9M 0.01% 1642
2024
Q2 		$3.17M Sell
112,175
-499,570
-82% -$14.2M ﹤0.01% 4484
2024
Q1 		$16.5M Buy
611,745
+177,710
+41% +$5.14M ﹤0.01% 2291
2023
Q4 		$13.1M Buy
434,035
+188,222
+77% +$5.37M ﹤0.01% 2491
2023
Q3 		$7.85M Buy
245,813
+120,043
+95% +$4.88M ﹤0.01% 2991
2023
Q2 		$5.68M Sell
125,770
-529,170
-81% -$21.4M ﹤0.01% 3452
2023
Q1 		$31.4M Buy
654,940
+504,633
+336% +$20.5M 0.01% 1492
2022
Q4 		$4.51M Buy
150,307
+131,233
+688% +$3.58M ﹤0.01% 4027
2022
Q3 		$417K Sell
19,074
-81,916
-81% -$1.9M ﹤0.01% 8860
2022
Q2 		$2.09M Buy
+100,990
New +$2.41M ﹤0.01% 5453
2021
Q4 		– Sell
-9,211
Closed -$300K – 13725
2021
Q3 		$294K Sell
9,211
-14,566
-61% -$429K ﹤0.01% 11097
2021
Q2 		$659K Buy
23,777
+15,791
+198% +$412K ﹤0.01% 9385
2021
Q1 		$202K Buy
+7,986
New +$228K ﹤0.01% 11679

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.