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
Q2 		$1.71M Buy
20,467
+20,139
+6,140% +$1.45M ﹤0.01% 2200
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 $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
William Blair Investment Management
William Blair Investment Management Chicago, Illinois $33.3B AUM 44.76% 1-Year Est. Return
Neuberger Berman Group
Neuberger Berman Group New York $150B AUM 40.08% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return
DGI
Disciplined Growth Investors Minneapolis, Minnesota $5.91B AUM 53.97% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Simplex Trading's POWI Position: Q2 2026 in Review

Simplex Trading increased its Power Integrations (POWI) stake by 6,140% in Q2 2026, buying an estimated $1.45M and bringing the position to 20,467 shares worth $1.71M. The position accounts for ﹤0.01% of the portfolio, ranked #2200.

Simplex Trading first reported a position in POWI in Q1 2015 and has held it in 19 quarters since. 373 funds tracked by Wall St. Rank hold POWI as of Q2 2026.

  • Simplex Trading held 20,467 shares of Power Integrations worth $1.71M as of Q2 2026.
  • Simplex Trading bought 20,139 Power Integrations shares in Q2 2026, an estimated $1.45M.
  • Power Integrations made up ﹤0.01% of Simplex Trading's portfolio in Q2 2026, its #2200 holding.
  • Simplex Trading first reported a position in Power Integrations in Q1 2015 and has held it in 19 quarters since.
  • 373 funds tracked by Wall St. Rank held Power Integrations as of Q2 2026.

Based on Simplex Trading's 13F filing for Q2 2026, filed 12 Aug 2026.