Simplex Trading
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Simplex Trading’s Allegro MicroSystems ALGM Stock Holding History

Simplex Trading’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 		$252K Sell
8,000
-5,200
-39% -$179K ﹤0.01% 4018
2025
Q4 		$348K Sell
13,200
-3,400
-20% -$93.6K ﹤0.01% 3671
2025
Q3 		$484K Sell
16,600
-26,100
-61% -$844K ﹤0.01% 3868
2025
Q2 		$1.46M Buy
42,700
+27,200
+175% +$678K ﹤0.01% 2399
2025
Q1 		$389K Sell
15,500
-11,400
-42% -$285K ﹤0.01% 3659
2024
Q4 		$588K Sell
26,900
-12,000
-31% -$256K ﹤0.01% 3356
2024
Q3 		$906K Sell
38,900
-144,000
-79% -$3.62M ﹤0.01% 3008
2024
Q2 		$5.17M Sell
182,900
-89,600
-33% -$2.55M ﹤0.01% 1415
2024
Q1 		$7.35M Sell
272,500
-27,400
-9% -$792K ﹤0.01% 1322
2023
Q4 		$9.08M Buy
299,900
+218,000
+266% +$6.23M 0.01% 1154
2023
Q3 		$2.62M Sell
81,900
-33,400
-29% -$1.36M ﹤0.01% 1857
2023
Q2 		$5.2M Sell
115,300
-88,400
-43% -$3.58M ﹤0.01% 1285
2023
Q1 		$9.78M Buy
203,700
+9,400
+5% +$382K 0.01% 917
2022
Q4 		$5.83M Buy
194,300
+189,700
+4,124% +$5.17M 0.01% 1135
2022
Q3 		$100K Buy
4,600
+2,000
+77% +$46.4K ﹤0.01% 5523
2022
Q2 		$53K Sell
2,600
-9,500
-79% -$227K ﹤0.01% 6403
2022
Q1 		$343K Sell
12,100
-17,300
-59% -$494K ﹤0.01% 4352
2021
Q4 		$1.06M Buy
29,400
+29,000
+7,250% +$944K ﹤0.01% 2777
2021
Q3 		$10K Hold
400
– – ﹤0.01% 8906
2021
Q2 		$11K Buy
400
+397
+13,233% +$10.4K ﹤0.01% 9017
2021
Q1 		$7K Buy
+3
New +$86 ﹤0.01% 8051

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

Simplex Trading's ALGM Position: Q1 2026 in Review

Simplex Trading opened a new position in Allegro MicroSystems (ALGM) in Q1 2026: 154 shares worth $4.86K. The stake represents ﹤0.01% of the portfolio and ranks #7914 among its holdings. This is a return to the name: Simplex Trading previously reported a position in ALGM as recently as Q3 2025.

Simplex Trading first reported a position in ALGM in Q1 2021 and has held it in 11 quarters since. The position peaked at $665K in Q1 2025. 320 funds tracked by Wall St. Rank hold ALGM as of Q1 2026.

  • Simplex Trading held 154 shares of Allegro MicroSystems worth $4.86K as of Q1 2026.
  • Allegro MicroSystems was a new Simplex Trading position in Q1 2026.
  • Allegro MicroSystems made up ﹤0.01% of Simplex Trading's portfolio in Q1 2026, its #7914 holding.
  • Simplex Trading first reported a position in Allegro MicroSystems in Q1 2021 and has held it in 11 quarters since.
  • Simplex Trading's Allegro MicroSystems position peaked at $665K in Q1 2025.
  • 320 funds tracked by Wall St. Rank held Allegro MicroSystems as of Q1 2026.

Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.