MONOLITHIC POWER SYSTEMS, INC. MPWR
CIK 0001280452 · CUSIP 609839105
Quarter-end disclosures, not live holdings.
Top 20 institutions
Weight means this stock's share of the manager's own portfolio.
| # | Manager | Value | Manager weight | Change vs prior | Source | |
|---|---|---|---|---|---|---|
| 01 | VANGUARD GROUP INC CIK 102909 · View history | $3.43B 5,920,669 shares | 0.06% | +96.39K(+1.70%)Added | SEC filing ↗ May 9, 2025 | ▾ |
| 02 | BlackRock, Inc. CIK 2012383 · View history | $2.85B 4,912,908 shares | 0.06% | -509.32K(-9.40%)Reduced | SEC filing ↗ May 2, 2025 | ▾ |
| 03 | FMR LLC CIK 315066 · View history | $2.03B 3,498,709 shares | 0.13% | +380.56K(+12.20%)Added | SEC filing ↗ May 12, 2025 | ▾ |
| 04 | STATE STREET CORP CIK 93751 · View history | $1.23B 2,115,705 shares | 0.05% | -44.31K(-2.10%)Reduced | SEC filing ↗ May 15, 2025 | ▾ |
| 05 | PRICE T ROWE ASSOCIATES INC /MD/ CIK 80255 · View history | $1.18B 2,034,731 shares | 0.15% | +506.43K(+33.10%)Added | SEC filing ↗ May 14, 2025 | ▾ |
| 06 | GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history | $814.38M 1,406,036 shares | 0.06% | +40.58K(+3.00%)Added | SEC filing ↗ May 13, 2025 | ▾ |
| 07 | FRANKLIN RESOURCES INC CIK 38777 · View history | $779.39M 1,343,830 shares | 0.23% | -95.99K(-6.70%)Reduced | SEC filing ↗ May 13, 2025 | ▾ |
| 08 | Invesco Ltd. CIK 914208 · View history | $724.59M 1,249,335 shares | 0.14% | +86.85K(+7.50%)Added | SEC filing ↗ May 12, 2025 | ▾ |
| 09 | VAN ECK ASSOCIATES CORP CIK 869178 · View history | $606.81M 1,046,258 shares | 0.78% | +270.23K(+34.80%)Added | SEC filing ↗ May 15, 2025 | ▾ |
| 10 | BROWN ADVISORY INC CIK 1345929 · View history | $541.48M 933,625 shares | 0.77% | -52.38K(-5.30%)Reduced | SEC filing ↗ Apr 30, 2025 | ▾ |
| 11 | WELLINGTON MANAGEMENT GROUP LLP CIK 902219 · View history | $441.89M 761,906 shares | 0.09% | -91.12K(-10.70%)Reduced | SEC filing ↗ May 13, 2025 | ▾ |
| 12 | JPMORGAN CHASE & CO CIK 19617 · View history | $365.14M 629,566 shares | 0.03% | +132.08K(+26.50%)Added | SEC filing ↗ May 12, 2025 | ▾ |
| 13 | NORGES BANK CIK 1374170 · Amended · View history | $344.69M 594,318 shares | 0.05% | -240.24K(-28.80%)Reduced | SEC filing ↗ May 13, 2025 | ▾ |
| 14 | BANK OF AMERICA CORP /DE/ CIK 70858 · View history | $340.46M 587,026 shares | 0.03% | +32.23K(+5.80%)Added | SEC filing ↗ May 15, 2025 | ▾ |
| 15 | MORGAN STANLEY CIK 895421 · View history | $313.56M 540,631 shares | 0.02% | +81.33K(+17.70%)Added | SEC filing ↗ May 15, 2025 | ▾ |
| 16 | NORTHERN TRUST CORP CIK 73124 · View history | $289.13M 498,516 shares | 0.04% | -10.78K(-2.10%)Reduced | SEC filing ↗ May 13, 2025 | ▾ |
| 17 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ CIK 912938 · View history | $265.37M 457,551 shares | 0.09% | -30.75K(-6.30%)Reduced | SEC filing ↗ May 2, 2025 | ▾ |
| 18 | Rafferty Asset Management, LLC CIK 1389426 · View history | $225.53M 388,855 shares | 0.96% | -30.34K(-7.20%)Reduced | SEC filing ↗ May 14, 2025 | ▾ |
| 19 | BARCLAYS PLC CIK 312069 · Amended · View history | $213.84M 368,703 shares | 0.10% | +35.84K(+10.80%)Added | SEC filing ↗ Mar 17, 2026 | ▾ |
| 20 | KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC CIK 1021223 · View history | $209.44M 361,124 shares | 0.51% | -1.64K(-0.50%)Reduced | SEC filing ↗ May 14, 2025 | ▾ |
Showing 20 / 867 institutions. The complete set is available through the API.
Coverage & totals by quarter
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Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.
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