Monolithic Power Systems MPWR Institutional Ownership

NASDAQ MPWR

$1,167.93 -115.39 (-8.99%)

At close: Oct 22, 2026 · 4:00 PM EDT

As of the 13F quarter ended Jun 30, 2026, 1,244 institutions held 96.94% of Monolithic Power Systems (MPWR) shares outstanding. Versus the prior quarter, institutional ownership was up 2.98 percentage points, the holder count rose by 129 and shares held were up 3.20%. The largest holder is BlackRock, Inc. with 5.59Mn shares (11.38% of outstanding).

Updated Oct 22, 2026 Monolithic Power Systems (MPWR) stock price and overview

Institutions by Trading Activity

1,244 Institutions

Increased 639 51.4%

Unchanged 146 11.7%

Reduced 459 36.9%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

96.94%

▲+2.98 pp QoQ

Shares Held by Institutions

47.64Mn

of 49.14Mn outstanding

▲+3.20% QoQ

Shares Outstanding

49.14Mn

1.50Mn held outside 13F filers

Institutional Investors

1,244

filed 13F for Jun 2026

▲+129 vs prior quarter

Net Shares Added (QoQ)

+1.48Mn

accumulated since last quarter

Value of Holdings

$55.64Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Updated Oct 22, 2026

Monolithic Power Systems, Inc. (NASDAQ:MPWR) was reported as a holding by 1,244 institutional investors in 13F filings for the quarter ended June 30, 2026.

Collectively, these holders controlled 96.94% of Monolithic Power Systems' outstanding shares in Q2 2026, up from 93.96% in Q1 2026.
Total holdings of Monolithic Power Systems shares rose 3.20% from Q1 2026, and the number of holders rose 37.46% from Q2 2025.
Of these 1,244 holders, 639 added to their positions, 459 reduced their stakes and 146 left their positions unchanged.
Combined, institutional investors held 47.64Mn shares of MPWR as of Q2 2026, up 1.48Mn from the prior quarter and up 1.1Mn from a year earlier.
BlackRock, Inc. led 13F holders of MPWR with 5.59Mn shares as of June 30, 2026, or 11.38% of shares outstanding.
The largest position increases in MPWR for Q2 2026 were by Invesco Ltd. (+858.84K shares), FMR LLC (+776.43K shares), Van Eck Associates Corp (+221.67K shares), Goldman Sachs Group Inc (+212.59K shares) and Two Sigma Investments, LP (+178.49K shares).
Holders that trimmed the most shares of Monolithic Power Systems in Q2 2026 while keeping a position were BlackRock, Inc. (-482.54K shares), T. Rowe Price Associates Inc (-286.16K shares), Geode Capital Management, LLC (-236.78K shares), Brown Advisory Inc (-199.46K shares) and Wellington Management Group LLP (-178.51K shares).
Monolithic Power Systems' 10 largest institutional shareholders as of Q2 2026 were BlackRock, Inc. (5.59Mn shares), FMR LLC (5.18Mn shares), Vanguard Capital Management LLC (3.13Mn shares), Vanguard Portfolio Management LLC (2.5Mn shares), Invesco Ltd. (2.34Mn shares), State Street Corp (2.28Mn shares), Geode Capital Management, LLC (1.2Mn shares), T. Rowe Price Associates Inc (976.8K shares), Franklin Templeton Inc (811.97K shares) and Goldman Sachs Group Inc (780.65K shares), per Business Quant data.

Form 13F Holdings

1,249 Institutional Holders

Report period 30 Jun, 2026

Total shares held 47.64Mn

Of outstanding 96.94%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	5,589,925	11.38%	▼482,542	-7.95%	$7.73Bn
2	FMR LLC	0000315066	5,177,258	10.54%	▲776,427	+17.64%	$7.16Bn
3	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	3,126,756	6.36%	▲43,307	+1.40%	$4.32Bn
4	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	2,504,858	5.10%	▼11,634	-0.46%	$3.46Bn
5	Invesco Ltd.	0000914208	2,343,930	4.77%	▲858,837	+57.83%	$3.24Bn
6	State Street Corp	0000093751	2,282,186	4.64%	▲93,732	+4.28%	$3.16Bn
7	GEODE CAPITAL MANAGEMENT, LLC	0001214717	1,195,281	2.43%	▼236,785	-16.53%	$1.65Bn
8	PRICE T ROWE ASSOCIATES INC /MD/	0000080255	976,798	1.99%	▼286,156	-22.66%	$1.35Mn
9	Franklin Templeton Inc	0000038777	811,974	1.65%	▼116,697	-12.57%	$1.12Bn
10	Goldman Sachs Group Inc	0000886982	780,650	1.59%	▲212,586	+37.42%	$1.08Bn
11	NORGES BANK	0001374170	751,399	1.53%	▲751,399	0.00%	$1.04Bn
12	VAN ECK ASSOCIATES CORP	0000869178	746,237	1.52%	▲221,666	+42.26%	$1.03Bn
13	Morgan Stanley	0000895421	727,871	1.48%	▲71,518	+10.90%	$1.01Bn
14	Bank Of America Corp /De/	0000070858	536,236	1.09%	▲154,074	+40.32%	$741.27Mn
15	Royal Bank Of Canada	0001000275	487,212	0.99%	▲13,844	+2.92%	$673.50Mn
16	FIRST TRUST ADVISORS LP	0001125816	482,781	0.98%	▼108,572	-18.36%	$667.38Mn
17	Northern Trust Corp	0000073124	479,492	0.98%	▼9,628	-1.97%	$662.83Mn
18	Barclays Plc	0000312069	474,132	0.96%	▼81,676	-14.70%	$655.42Mn
19	Rafferty Asset Management, LLC	0001389426	459,278	0.93%	▲141,805	+44.67%	$634.89Mn
20	UBS Group AG	0001610520	449,479	0.91%	▼90,934	-16.83%	$621.34Mn

Showing 1 to 20 of 1,249 holders