Simplex Trading
POWI icon

Simplex Trading’s Power Integrations POWI Stock Holding History

Simplex Trading’s Portfolio POWI Stock Details POWI Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$16.8K Sell
328
-6,484
-95% -$298K ﹤0.01% 6902
2025
Q4 		$242K Buy
6,812
+6,760
+13,000% +$256K ﹤0.01% 4030
2025
Q3 		$2K Buy
+52
New +$2.51K ﹤0.01% 8697
2024
Q1 		– Sell
-547
Closed -$40.8K – 9646
2023
Q4 		$44K Buy
547
+168
+44% +$12.9K ﹤0.01% 6204
2023
Q3 		$28K Buy
+379
New +$32.4K ﹤0.01% 6325
2021
Q4 		– Sell
-3,484
Closed -$342K – 11223
2021
Q3 		$287K Buy
3,484
+3,400
+4,048% +$329K ﹤0.01% 4972
2021
Q2 		$6K Buy
+84
New +$6.78K ﹤0.01% 9391
2021
Q1 		– Sell
-3,051
Closed -$266K – 9776
2020
Q4 		$249K Buy
3,051
+2,671
+703% +$181K ﹤0.01% 4315
2020
Q3 		$21K Sell
380
-1,122
-75% -$64.6K ﹤0.01% 6339
2020
Q2 		$88K Buy
+1,502
New +$79K ﹤0.01% 4928
2020
Q1 		– Sell
-866
Closed -$41.8K – 8113
2019
Q4 		$42K Buy
+866
New +$39.9K ﹤0.01% 5359
2018
Q3 		– Sell
-7,374
Closed -$265K – 7913
2018
Q2 		$269K Buy
+7,374
New +$267K ﹤0.01% 3144
2018
Q1 		– Sell
-202
Closed -$7K – 6709
2017
Q4 		$7K Buy
+202
New +$7.71K ﹤0.01% 4216
2016
Q3 		– Sell
-3,358
Closed -$95.4K – 6323
2016
Q2 		$84K Sell
3,358
-56
-2% -$1.37K 0.01% 1615
2016
Q1 		$84K Buy
+3,414
New +$78.6K 0.01% 1506
2015
Q4 		– Sell
-4,528
Closed -$110K – 5978
2015
Q3 		$95K Buy
4,528
+4,056
+859% +$81.2K 0.01% 1454
2015
Q2 		$10K Sell
472
-1,680
-78% -$42K ﹤0.01% 3065
2015
Q1 		$56K Buy
+2,152
New +$58K 0.01% 1477

Other funds holding POWI

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Neuberger Berman Group
Neuberger Berman Group New York $131B AUM 28.36% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
William Blair Investment Management
William Blair Investment Management Chicago, Illinois $30.3B AUM 33.75% 1-Year Est. Return
SCM
Snyder Capital Management San Francisco, California $5.16B AUM 26.72% 1-Year Est. Return
DGI
Disciplined Growth Investors Minneapolis, Minnesota $4.89B AUM 33.85% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Simplex Trading's POWI Position: Q1 2026 in Review

Simplex Trading reduced its Power Integrations (POWI) stake by 95% in Q1 2026, selling an estimated $298K and leaving 328 shares worth $16.8K. The position accounts for ﹤0.01% of the portfolio, ranked #6902.

Simplex Trading first reported a position in POWI in Q1 2015 and has held it in 18 quarters since. The position peaked at $287K in Q3 2021. 308 funds tracked by Wall St. Rank hold POWI as of Q1 2026.

  • Simplex Trading held 328 shares of Power Integrations worth $16.8K as of Q1 2026.
  • Simplex Trading sold 6,484 Power Integrations shares in Q1 2026, an estimated $298K.
  • Power Integrations made up ﹤0.01% of Simplex Trading's portfolio in Q1 2026, its #6902 holding.
  • Simplex Trading first reported a position in Power Integrations in Q1 2015 and has held it in 18 quarters since.
  • Simplex Trading's Power Integrations position peaked at $287K in Q3 2021.
  • 308 funds tracked by Wall St. Rank held Power Integrations as of Q1 2026.

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