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POWI in the 13F filings

Power Integrations Inc · CUSIP 739276103

Sector · SemiconductorsTheme · AI infrastructure and semiconductors· L3VLUP-definedTheme · Semiconductors
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023Q3 2023
Quarter end
30 Jun 2026
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 3 Aug 2026
Managers listing it
23
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q1 2026 and Q2 2026; 3 listed it in both
Shares listed
9,692,595
combined, among listed positions
Reported value
$810m
combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 16 buyers (opened or added shares) and 11 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was -1,155,606.

Managers listing POWI in Q2 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q1 2026, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

23 of 23 holders

ActionFiling
Wellington Management Group LLP3,595,855$301m0.05%Added+239,70214 Aug 2026 (the filing on sec.gov)
Neuberger Berman Group LLC2,020,390$169m0.11%Trimmed-1,912,70927 Oct 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc1,924,939$161munder 0.1%Added+528,45614 Aug 2026 (the filing on sec.gov)
Invesco Ltd870,396$73munder 0.1%Added+589,71014 Aug 2026 (the filing on sec.gov)
MFS Investment Management767,672$64munder 0.1%Newnew3 Aug 2026 (the filing on sec.gov)
Jane Street Group LLC117,524$9.8munder 0.1%Newnew14 Aug 2026 (the filing on sec.gov)
AQR Capital Management LLC43,596$3.7munder 0.1%Trimmed-93,77914 Aug 2026 (the filing on sec.gov)
AllianceBernstein LP70,958$3.6munder 0.1%Added+4,06614 Aug 2026 (the filing on sec.gov)
Citadel Advisors LLC42,674$3.6munder 0.1%Trimmed-67,2672 Sep 2026 (the filing on sec.gov)
Man Group PLC40,902$3.4munder 0.1%Added+33,29314 Aug 2026 (the filing on sec.gov)
Susquehanna International Group LLP40,515$3.4munder 0.1%Added+16,85014 Aug 2026 (the filing on sec.gov)
D. E. Shaw & Co.25,900$2.2munder 0.1%Newnew14 Aug 2026 (the filing on sec.gov)
Verition Fund Management LLC24,627$2.1munder 0.1%Newnew14 Aug 2026 (the filing on sec.gov)
Janus Henderson Group Ltd22,414$1.9munder 0.1%Trimmed-3,70014 Aug 2026 (the filing on sec.gov)
Bridgewater Associates LP17,857$1.5munder 0.1%Newnew14 Aug 2026 (the filing on sec.gov)
Two Sigma Investments LP13,700$1.1munder 0.1%Trimmed-9,10014 Aug 2026 (the filing on sec.gov)
Holocene Advisors LP12,836$1.1munder 0.1%Trimmed-75,09514 Aug 2026 (the filing on sec.gov)
Fidelity (FMR LLC)11,504$964kunder 0.1%Added+46613 Aug 2026 (the filing on sec.gov)
Acadian Asset Management LLC11,261$941kunder 0.1%Newnew13 Aug 2026 (the filing on sec.gov)
Squarepoint Ops LLC9,731$815kunder 0.1%Newnew14 Aug 2026 (the filing on sec.gov)
Winton Group Ltd3,825$320kunder 0.1%Trimmed-13,0997 Aug 2026 (the filing on sec.gov)
Brevan Howard Capital Management LP2,722$228kunder 0.1%Newnew14 Aug 2026 (the filing on sec.gov)
Walleye Capital LLC797$67kunder 0.1%Newnew3 Aug 2026 (the filing on sec.gov)

Largest increases and reductions, by shares

Q1 2026 to Q2 2026, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (9)

Exited (4)

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
6 in Q3 2024 to 3 in Q2 2026

Tracked managers listing it, at least.

024682014201620182020202220242026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
POWI by quarter
QuarterHoldersReported valueBuyersSellers
Q2 20133$127mn.a.n.a.
Q3 20134$226mn.a.n.a.
Q4 20135$229mn.a.n.a.
Q1 20145$384mn.a.n.a.
Q2 20142$167mn.a.n.a.
Q3 20142$174mn.a.n.a.
Q4 20142$175mn.a.n.a.
Q1 20153$179mn.a.n.a.
Q2 20152$152mn.a.n.a.
Q3 20152$142mn.a.n.a.
Q4 20153$153mn.a.n.a.
Q1 20162$151mn.a.n.a.
Q2 20163$155mn.a.n.a.
Q3 20162$184mn.a.n.a.
Q4 20162$198mn.a.n.a.
Q1 20172$205mn.a.n.a.
Q2 20171$204mn.a.n.a.
Q3 20171$214mn.a.n.a.
Q4 20172$220mn.a.n.a.
Q1 20182$199mn.a.n.a.
Q2 20182$212mn.a.n.a.
Q3 20182$186mn.a.n.a.
Q4 20182$184mn.a.n.a.
Q1 20192$206mn.a.n.a.
Q2 20192$230mn.a.n.a.
Q3 20192$255mn.a.n.a.
Q4 20192$272mn.a.n.a.
Q1 20205$234mn.a.n.a.
Q2 20203$409mn.a.n.a.
Q3 20203$268mn.a.n.a.
Q4 20204$684mn.a.n.a.
Q1 20213$525mn.a.n.a.
Q2 20214$529mn.a.n.a.
Q3 20215$838mn.a.n.a.
Q4 20216$623mn.a.n.a.
Q1 20226$593mn.a.n.a.
Q2 20226$475mn.a.n.a.
Q3 20228$448mn.a.n.a.
Q4 20225$475mn.a.n.a.
Q1 20236$518mn.a.n.a.
Q2 20235$518mn.a.n.a.
Q3 20234$427mn.a.n.a.
Q4 20234$437m22
Q1 20246$400m51
Q2 20247$412m52
Q3 20246$429m60
Q4 20243$404m21
Q1 20252$199m20
Q2 20253$241m30
Q3 20254$194m40
Q4 20253$160m1020
Q1 20264$429m1112
Q2 20263$535m1611

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

POWI and NVDA →POWI and AVGO →POWI and MU →Choose a stock to compare with POWI →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own POWI, latest filings →Back to the 13F Explorer →