Massachusetts Financial Services’s Power Integrations POWI Stock Holding History

Massachusetts Financial Services’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	$64.3M	Buy	+767,672	New	+$55.4M	0.02%	449
2023 Q1	–	Sell	-36,207	Closed	-$2.6M	–	878
2022 Q4	$2.6M	Sell	36,207 -377	-1%	-$26.9K	﹤0.01%	701
2022 Q3	$2.35M	Buy	36,584 +615	+2%	+$46K	﹤0.01%	703
2022 Q2	$2.7M	Sell	35,969 -735	-2%	-$59.6K	﹤0.01%	690
2022 Q1	$3.4M	Buy	36,704 +14,370	+64%	+$1.25M	﹤0.01%	705
2021 Q4	$2.07M	Buy	22,334 +913	+4%	+$89.7K	﹤0.01%	775
2021 Q3	$2.12M	Buy	21,421 +94	+0.4%	+$9.11K	﹤0.01%	778
2021 Q2	$1.75M	Buy	21,327 +15,879	+291%	+$1.28M	﹤0.01%	796
2021 Q1	$444K	Buy	+5,448	New	+$474K	﹤0.01%	889

Other funds holding POWI

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

William Blair Investment Management Chicago, Illinois $33.3B AUM 44.76% 1-Year Est. Return

Neuberger Berman Group New York $150B AUM 40.08% 1-Year Est. Return

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 Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Massachusetts Financial Services's POWI Position: Q2 2026 in Review

Massachusetts Financial Services opened a new position in Power Integrations (POWI) in Q2 2026: 767,672 shares worth $64.3M. The stake represents 0.02% of the portfolio and ranks #449 among its holdings. This is a return to the name: Massachusetts Financial Services previously reported a position in POWI as recently as Q4 2022.

Massachusetts Financial Services first reported a position in POWI in Q1 2021 and has held it in 9 quarters since. 372 funds tracked by Wall St. Rank hold POWI as of Q2 2026.

Massachusetts Financial Services held 767,672 shares of Power Integrations worth $64.3M as of Q2 2026.
Power Integrations was a new Massachusetts Financial Services position in Q2 2026.
Power Integrations made up 0.02% of Massachusetts Financial Services's portfolio in Q2 2026, its #449 holding.
Massachusetts Financial Services first reported a position in Power Integrations in Q1 2021 and has held it in 9 quarters since.
372 funds tracked by Wall St. Rank held Power Integrations as of Q2 2026.

Based on Massachusetts Financial Services's 13F filing for Q2 2026, filed 3 Aug 2026.