Penbrook Management’s Power Integrations POWI Stock Holding History

Penbrook Management’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	$471K	Hold	9,200	–	–	0.36%	60
2025 Q4	$327K	Hold	9,200	–	–	0.23%	71
2025 Q3	$370K	Sell	9,200 -9,200	-50%	-$444K	0.26%	65
2025 Q2	$979K	Buy	18,400 +9,200	+100%	+$472K	0.37%	60
2025 Q1	$465K	Hold	9,200	–	–	0.35%	63
2024 Q4	$568K	Hold	9,200	–	–	0.39%	54
2024 Q3	$590K	Hold	9,200	–	–	0.38%	54
2024 Q2	$646K	Hold	9,200	–	–	0.39%	52
2024 Q1	$658K	Hold	9,200	–	–	0.41%	52
2023 Q4	$755K	Sell	9,200 -800	-8%	-$61.3K	0.51%	43
2023 Q3	$763K	Hold	10,000	–	–	0.56%	43
2023 Q2	$947K	Hold	10,000	–	–	0.69%	35
2023 Q1	$846K	Hold	10,000	–	–	0.65%	43
2022 Q4	$717K	Sell	10,000 -3,000	-23%	-$214K	0.61%	47
2022 Q3	$836K	Hold	13,000	–	–	0.72%	40
2022 Q2	$975K	Sell	13,000 -500	-4%	-$40.6K	0.77%	35
2022 Q1	$1.25M	Hold	13,500	–	–	0.81%	37
2021 Q4	$1.25M	Sell	13,500 -500	-4%	-$49.1K	0.76%	42
2021 Q3	$1.39M	Hold	14,000	–	–	0.86%	40
2021 Q2	$1.15M	Hold	14,000	–	–	0.69%	49
2021 Q1	$1.14M	Hold	14,000	–	–	0.82%	41
2020 Q4	$1.15M	Hold	14,000	–	–	0.88%	40
2020 Q3	$776K	Buy	14,000 +800	+6%	+$46.1K	0.67%	46
2020 Q2	$780K	Hold	13,200	–	–	0.77%	37
2020 Q1	$583K	Hold	13,200	–	–	0.75%	39
2019 Q4	$653K	Hold	13,200	–	–	0.64%	55
2019 Q3	$597K	Hold	13,200	–	–	0.65%	55
2019 Q2	$529K	Sell	13,200 -4,000	-23%	-$146K	0.57%	63
2019 Q1	$601K	Hold	17,200	–	–	0.62%	53
2018 Q4	$524K	Hold	17,200	–	–	0.6%	56
2018 Q3	$544K	Hold	17,200	–	–	0.52%	67
2018 Q2	$628K	Hold	17,200	–	–	0.6%	60
2018 Q1	$588K	Sell	17,200 -1,600	-9%	-$57.1K	0.59%	63
2017 Q4	$691K	Buy	+18,800	New	+$717K	0.62%	55
2016 Q3	$656K	Hold	20,800	–	–	0.71%	56
2016 Q2	$521K	Hold	20,800	–	–	0.57%	63
2016 Q1	$516K	Hold	20,800	–	–	0.57%	61
2015 Q4	$506K	Hold	20,800	–	–	0.52%	66
2015 Q3	$439K	Hold	20,800	–	–	0.46%	77
2015 Q2	$470K	Sell	20,800 -200	-1%	-$5K	0.45%	76
2015 Q1	$547K	Hold	21,000	–	–	0.49%	77
2014 Q4	$543K	Hold	21,000	–	–	0.49%	77
2014 Q3	$566K	Hold	21,000	–	–	0.52%	72
2014 Q2	$604K	Sell	21,000 -20,200	-49%	-$565K	0.53%	71
2014 Q1	$1.25M	Buy	41,200 +20,600	+100%	+$625K	0.6%	61
2013 Q4	$575K	Buy	+20,600	New	+$556K	0.56%	71

Other funds holding POWI

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

Neuberger Berman Group New York $131B AUM 28.36% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return

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 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 Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Penbrook Management's POWI Position: Q1 2026 in Review

Penbrook Management held its Power Integrations (POWI) position steady in Q1 2026 at 9,200 shares worth $471K. The position accounts for 0.36% of the portfolio, ranked #60.

Penbrook Management first reported a position in POWI in Q4 2013 and has held it in 46 quarters since. The position peaked at $1.39M in Q3 2021. 308 funds tracked by Wall St. Rank hold POWI as of Q1 2026.

Penbrook Management held 9,200 shares of Power Integrations worth $471K as of Q1 2026.
Penbrook Management left its Power Integrations share count unchanged in Q1 2026.
Power Integrations made up 0.36% of Penbrook Management's portfolio in Q1 2026, its #60 holding.
Penbrook Management first reported a position in Power Integrations in Q4 2013 and has held it in 46 quarters since.
Penbrook Management's Power Integrations position peaked at $1.39M in Q3 2021.
308 funds tracked by Wall St. Rank held Power Integrations as of Q1 2026.

Based on Penbrook Management's 13F filing for Q1 2026, filed 21 Apr 2026.