Who owns MONOLITHIC POWER SYSTEMS, INC.?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of MPWR from SEC Form 13F filings across 1,241 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 1,241 institutions disclosed 47.6M shares of MONOLITHIC POWER SYSTEMS, INC. worth $65.58B — about 96.9% of shares outstanding; the largest disclosed holder is BlackRock, Inc.. Source: SEC Form 13F filings, parsed by EvidInvest.
1,241
13F holders
$65.58B
value, 2026 filers
96.9%
of shares outstanding (47.6M sh)
228
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of MPWR's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 5.6M | $7.73B | 0.1% | 11.4% | -7.9% |
| 2 | FMR LLC | 5.2M | $7.16B | 0.3% | 10.5% | +17.6% |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | 3.1M | $4.32B | 0.1% | 6.4% | +1.4% |
| 4 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2.5M | $3.46B | 0.2% | 5.1% | -0.5% |
| 5 | Invesco Ltd. | 2.3M | $3.24B | 0.3% | 4.8% | +57.8% |
| 6 | STATE STREET CORP | 2.3M | $3.16B | 0.1% | 4.6% | +4.3% |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | 1.2M | $1.65B | 0.1% | 2.4% | -16.5% |
| 8 | PRICE T ROWE ASSOCIATES INC /MD/ | 976,798 | $1.35B | 0.1% | 2% | -22.7% |
| 9 | FRANKLIN RESOURCES INC | 811,974 | $1.12B | 0.2% | 1.7% | -12.6% |
| 10 | GOLDMAN SACHS GROUP INC | 780,650 | $1.08B | 0.1% | 1.6% | +37.4% |
| 11 | NORGES BANKNEW | 751,399 | $1.04B | 0.1% | 1.5% | new |
| 12 | VAN ECK ASSOCIATES CORP | 746,237 | $1.03B | 0.6% | 1.5% | +42.3% |
| 13 | MORGAN STANLEY | 727,885 | $1.01B | 0.1% | 1.5% | +10.9% |
| 14 | BANK OF AMERICA CORP /DE/ | 536,236 | $741.3M | 0.0% | 1.1% | +40.3% |
| 15 | ROYAL BANK OF CANADA | 487,212 | $673.5M | 0.1% | 1% | +2.9% |
| 16 | FIRST TRUST ADVISORS LP | 482,781 | $667.4M | 0.4% | 1% | -18.4% |
| 17 | NORTHERN TRUST CORP | 479,492 | $662.8M | 0.1% | 1% | -2.0% |
| 18 | BARCLAYS PLC | 474,132 | $655.4M | 0.1% | 1% | -14.7% |
| 19 | Rafferty Asset Management, LLC | 459,278 | $634.9M | 1.4% | 0.9% | +44.7% |
| 20 | UBS Group AG | 449,479 | $621.3M | 0.1% | 0.9% | -16.8% |
| 21 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 442,176 | $611.2M | 0.2% | 0.9% | -22.1% |
| 22 | JPMORGAN CHASE & CO | 434,949 | $571.0M | 0.0% | 0.9% | -21.6% |
| 23 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 388,951 | $537.7M | 0.1% | 0.8% | +3.3% |
| 24 | Legal & General Group Plc | 359,936 | $497.6M | 0.1% | 0.7% | -5.3% |
| 25 | VOYA INVESTMENT MANAGEMENT LLC | 340,269 | $469.7M | 0.4% | 0.7% | -13.5% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.