Security record · archived quarter
MPWR
Monolithic Power Systems, Inc. · Technology · Semiconductors
18Tracked holders
+1Δ holders
24.30MShares held
$22.37BReported value
+2New positions
−2Exits
Momentum inputs (comparable managers):
holder breadth +5.9% ·
share flow +2.6% ·
net new positions 0.0%
— formula
Broad accumulation — rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2025
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 166 | +5 | 38.15M | $52.59B | +8 | −2 |
| Q1 2026 | 163 | +3 | 37.39M | $40.78B | +6 | −4 |
| Q4 2025 | 159 | 0 | 43.73M | $37.89B | +3 | −2 |
| Q3 2025 | 18 | +1 | 24.30M | $22.37B | +2 | −2 |
| Q2 2025 | 15 | -3 | 21.56M | $15.77B | — | −3 |
| Q1 2025 | 15 | +2 | 7.50M | $4.35B | +2 | — |
| Q4 2024 | 13 | +2 | 7.31M | $4.33B | +2 | — |
| Q3 2024 | 10 | -2 | 4.86M | $4.49B | — | −2 |
| Q2 2024 | 12 | — | 4.81M | $3.95B | — | — |
Who holds it · Q3 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | The Vanguard Group ✦ (passive) | 6.07M | +2.3% | $5.59B | 0.1% | ▲ Add | 2 | SEC ↗ |
| 2 | The Vanguard Group ✦ (passive) | 6.07M | +2.3% | $5.59B | 0.1% | ▲ Add | 2 | SEC ↗ |
| 3 | The Vanguard Group ✦ (passive) | 6.07M | +2.3% | $5.59B | 0.1% | ▲ Add | 2 | SEC ↗ |
| 4 | The Vanguard Group ✦ (passive) | 6.07M | +2.3% | $5.59B | 0.1% | ▲ Add | 2 | SEC ↗ |
| 5 | The Vanguard Group ✦ (passive) | 6.07M | +2.3% | $5.59B | 0.1% | ▲ Add | 2 | SEC ↗ |
| 6 | The Vanguard Group ✦ (passive) | 6.07M | +2.3% | $5.59B | 0.1% | ▲ Add | 2 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 5.73M | +9.5% | $5.27B | 0.1% | ▲ Add | 2 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 5.73M | +9.5% | $5.27B | 0.1% | ▲ Add | 2 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 5.73M | +9.5% | $5.27B | 0.1% | ▲ Add | 2 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 5.73M | +9.5% | $5.27B | 0.1% | ▲ Add | 2 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 5.73M | +9.5% | $5.27B | 0.1% | ▲ Add | 2 | SEC ↗ |
| 12 | BlackRock ✦ (passive) | 5.73M | +9.5% | $5.27B | 0.1% | ▲ Add | 2 | SEC ↗ |
| 13 | BlackRock ✦ (passive) | 5.73M | +9.5% | $5.27B | 0.1% | ▲ Add | 2 | SEC ↗ |
| 14 | BlackRock ✦ (passive) | 5.73M | +9.5% | $5.27B | 0.1% | ▲ Add | 2 | SEC ↗ |
| 15 | BlackRock ✦ (passive) | 5.73M | +9.5% | $5.27B | 0.1% | ▲ Add | 2 | SEC ↗ |
| 16 | BlackRock ✦ (passive) | 5.73M | +9.5% | $5.27B | 0.1% | ▲ Add | 2 | SEC ↗ |
| 17 | BlackRock ✦ (passive) | 5.73M | +9.5% | $5.27B | 0.1% | ▲ Add | 2 | SEC ↗ |
| 18 | BlackRock ✦ (passive) | 5.73M | +9.5% | $5.27B | 0.1% | ▲ Add | 2 | SEC ↗ |
| 19 | BlackRock ✦ (passive) | 5.73M | +9.5% | $5.27B | 0.1% | ▲ Add | 2 | SEC ↗ |
| 20 | BlackRock ✦ (passive) | 5.73M | +9.5% | $5.27B | 0.1% | ▲ Add | 2 | SEC ↗ |
| 21 | BlackRock ✦ (passive) | 5.73M | +9.5% | $5.27B | 0.1% | ▲ Add | 2 | SEC ↗ |
| 22 | BlackRock ✦ (passive) | 5.73M | +9.5% | $5.27B | 0.1% | ▲ Add | 2 | SEC ↗ |
| 23 | BlackRock ✦ (passive) | 5.73M | +9.5% | $5.27B | 0.1% | ▲ Add | 2 | SEC ↗ |
| 24 | BlackRock ✦ (passive) | 5.73M | +9.5% | $5.27B | 0.1% | ▲ Add | 2 | SEC ↗ |
| 25 | BlackRock ✦ (passive) | 5.73M | +9.5% | $5.27B | 0.1% | ▲ Add | 2 | SEC ↗ |
| 26 | BlackRock ✦ (passive) | 5.73M | +9.5% | $5.27B | 0.1% | ▲ Add | 2 | SEC ↗ |
| 27 | Fidelity (FMR) ✦ | 3.56M | +5.1% | $3.28B | 0.2% | ▲ Add | 2 | SEC ↗ |
| 28 | Fidelity (FMR) ✦ | 3.56M | +5.1% | $3.28B | 0.2% | ▲ Add | 2 | SEC ↗ |
| 29 | Fidelity (FMR) ✦ | 3.56M | +5.1% | $3.28B | 0.2% | ▲ Add | 2 | SEC ↗ |
| 30 | Fidelity (FMR) ✦ | 3.56M | +5.1% | $3.28B | 0.2% | ▲ Add | 2 | SEC ↗ |
| 31 | Fidelity (FMR) ✦ | 3.56M | +5.1% | $3.28B | 0.2% | ▲ Add | 2 | SEC ↗ |
| 32 | State Street Global Advisors ✦ (passive) | 2.13M | +0.7% | $1.97B | 0.1% | ▲ Add | 4 | SEC ↗ |
| 33 | JPMorgan Chase ✦ | 1.73M | — | $1.59B | 0.1% | n/c | 1 | SEC ↗ |
| 34 | JPMorgan Chase ✦ | 1.73M | — | $1.59B | 0.1% | n/c | 1 | SEC ↗ |
| 35 | JPMorgan Chase ✦ | 1.73M | — | $1.59B | 0.1% | n/c | 1 | SEC ↗ |
| 36 | JPMorgan Chase ✦ | 1.73M | — | $1.59B | 0.1% | n/c | 1 | SEC ↗ |
| 37 | JPMorgan Chase ✦ | 1.73M | — | $1.59B | 0.1% | n/c | 1 | SEC ↗ |
| 38 | JPMorgan Chase ✦ | 1.73M | — | $1.59B | 0.1% | n/c | 1 | SEC ↗ |
| 39 | JPMorgan Chase ✦ | 1.73M | — | $1.59B | 0.1% | n/c | 1 | SEC ↗ |
| 40 | JPMorgan Chase ✦ | 1.73M | — | $1.59B | 0.1% | n/c | 1 | SEC ↗ |
| 41 | JPMorgan Chase ✦ | 1.73M | — | $1.59B | 0.1% | n/c | 1 | SEC ↗ |
| 42 | JPMorgan Chase ✦ | 1.73M | — | $1.59B | 0.1% | n/c | 1 | SEC ↗ |
| 43 | JPMorgan Chase ✦ | 1.73M | — | $1.59B | 0.1% | n/c | 1 | SEC ↗ |
| 44 | JPMorgan Chase ✦ | 1.73M | — | $1.59B | 0.1% | n/c | 1 | SEC ↗ |
| 45 | JPMorgan Chase ✦ | 1.73M | — | $1.59B | 0.1% | n/c | 1 | SEC ↗ |
| 46 | JPMorgan Chase ✦ | 1.73M | — | $1.59B | 0.1% | n/c | 1 | SEC ↗ |
| 47 | JPMorgan Chase ✦ | 1.73M | — | $1.59B | 0.1% | n/c | 1 | SEC ↗ |
| 48 | JPMorgan Chase ✦ | 1.73M | — | $1.59B | 0.1% | n/c | 1 | SEC ↗ |
| 49 | JPMorgan Chase ✦ | 1.73M | — | $1.59B | 0.1% | n/c | 1 | SEC ↗ |
| 50 | JPMorgan Chase ✦ | 1.73M | — | $1.59B | 0.1% | n/c | 1 | SEC ↗ |
| 51 | JPMorgan Chase ✦ | 1.73M | — | $1.59B | 0.1% | n/c | 1 | SEC ↗ |
| 52 | JPMorgan Chase ✦ | 1.73M | — | $1.59B | 0.1% | n/c | 1 | SEC ↗ |
| 53 | JPMorgan Chase ✦ | 1.73M | — | $1.59B | 0.1% | n/c | 1 | SEC ↗ |
| 54 | JPMorgan Chase ✦ | 1.73M | — | $1.59B | 0.1% | n/c | 1 | SEC ↗ |
| 55 | JPMorgan Chase ✦ | 1.73M | — | $1.59B | 0.1% | n/c | 1 | SEC ↗ |
| 56 | JPMorgan Chase ✦ | 1.73M | — | $1.59B | 0.1% | n/c | 1 | SEC ↗ |
| 57 | JPMorgan Chase ✦ | 1.73M | — | $1.59B | 0.1% | n/c | 1 | SEC ↗ |
| 58 | JPMorgan Chase ✦ | 1.73M | — | $1.59B | 0.1% | n/c | 1 | SEC ↗ |
| 59 | JPMorgan Chase ✦ | 1.73M | — | $1.59B | 0.1% | n/c | 1 | SEC ↗ |
| 60 | JPMorgan Chase ✦ | 1.73M | — | $1.59B | 0.1% | n/c | 1 | SEC ↗ |
| 61 | JPMorgan Chase ✦ | 1.73M | — | $1.59B | 0.1% | n/c | 1 | SEC ↗ |
| 62 | JPMorgan Chase ✦ | 1.73M | — | $1.59B | 0.1% | n/c | 1 | SEC ↗ |
| 63 | JPMorgan Chase ✦ | 1.73M | — | $1.59B | 0.1% | n/c | 1 | SEC ↗ |
| 64 | JPMorgan Chase ✦ | 1.73M | — | $1.59B | 0.1% | n/c | 1 | SEC ↗ |
| 65 | T. Rowe Price ✦ | 1.57M | -24.7% | $1.45B | 0.2% | ▼ Trim | 6 | SEC ↗ |
| 66 | T. Rowe Price ✦ | 1.57M | -24.7% | $1.45B | 0.2% | ▼ Trim | 6 | SEC ↗ |
| 67 | Geode Capital Management ✦ (passive) | 1.34M | +1.4% | $1.23B | 0.1% | ▲ Add | 6 | SEC ↗ |
| 68 | Geode Capital Management ✦ (passive) | 1.34M | +1.4% | $1.23B | 0.1% | ▲ Add | 6 | SEC ↗ |
| 69 | Morgan Stanley ✦ | 558.67K | — | $514.34M | 0.0% | n/c | 1 | SEC ↗ |
| 70 | Morgan Stanley ✦ | 558.67K | — | $514.34M | 0.0% | n/c | 1 | SEC ↗ |
| 71 | Morgan Stanley ✦ | 558.67K | — | $514.34M | 0.0% | n/c | 1 | SEC ↗ |
| 72 | Morgan Stanley ✦ | 558.67K | — | $514.34M | 0.0% | n/c | 1 | SEC ↗ |
| 73 | Morgan Stanley ✦ | 558.67K | — | $514.34M | 0.0% | n/c | 1 | SEC ↗ |
| 74 | Morgan Stanley ✦ | 558.67K | — | $514.34M | 0.0% | n/c | 1 | SEC ↗ |
| 75 | Morgan Stanley ✦ | 558.67K | — | $514.34M | 0.0% | n/c | 1 | SEC ↗ |
| 76 | Morgan Stanley ✦ | 558.67K | — | $514.34M | 0.0% | n/c | 1 | SEC ↗ |
| 77 | Morgan Stanley ✦ | 558.67K | — | $514.34M | 0.0% | n/c | 1 | SEC ↗ |
| 78 | Morgan Stanley ✦ | 558.67K | — | $514.34M | 0.0% | n/c | 1 | SEC ↗ |
| 79 | Morgan Stanley ✦ | 558.67K | — | $514.34M | 0.0% | n/c | 1 | SEC ↗ |
| 80 | Morgan Stanley ✦ | 558.67K | — | $514.34M | 0.0% | n/c | 1 | SEC ↗ |
| 81 | Morgan Stanley ✦ | 558.67K | — | $514.34M | 0.0% | n/c | 1 | SEC ↗ |
| 82 | Morgan Stanley ✦ | 558.67K | — | $514.34M | 0.0% | n/c | 1 | SEC ↗ |
| 83 | Morgan Stanley ✦ | 558.67K | — | $514.34M | 0.0% | n/c | 1 | SEC ↗ |
| 84 | Wellington Management ✦ | 452.94K | -35.6% | $416.99M | 0.1% | ▼ Trim | 6 | SEC ↗ |
| 85 | Wellington Management ✦ | 452.94K | -35.6% | $416.99M | 0.1% | ▼ Trim | 6 | SEC ↗ |
| 86 | Wellington Management ✦ | 452.94K | -35.6% | $416.99M | 0.1% | ▼ Trim | 6 | SEC ↗ |
| 87 | Wellington Management ✦ | 452.94K | -35.6% | $416.99M | 0.1% | ▼ Trim | 6 | SEC ↗ |
| 88 | Goldman Sachs Group ✦ | 434.32K | — | $399.86M | 0.1% | n/c | 1 | SEC ↗ |
| 89 | Goldman Sachs Group ✦ | 434.32K | — | $399.86M | 0.1% | n/c | 1 | SEC ↗ |
| 90 | Goldman Sachs Group ✦ | 434.32K | — | $399.86M | 0.1% | n/c | 1 | SEC ↗ |
| 91 | Goldman Sachs Group ✦ | 434.32K | — | $399.86M | 0.1% | n/c | 1 | SEC ↗ |
| 92 | Citadel Advisors ✦ | 260.47K | +3304.8% | $239.80M | 0.2% | ▲ Add | 6 | SEC ↗ |
| 93 | Citadel Advisors ✦ | 260.47K | +3304.8% | $239.80M | 0.2% | ▲ Add | 6 | SEC ↗ |
| 94 | Millennium Management ✦ | 170.49K | +997.7% | $156.96M | 0.1% | ▲ Add | 6 | SEC ↗ |
| 95 | Marshall Wace ✦ | 132.15K | New | $121.66M | 0.1% | New | 1 | SEC ↗ |
| 96 | Marshall Wace ✦ | 132.15K | New | $121.66M | 0.1% | New | 1 | SEC ↗ |
| 97 | Adage Capital Partners ✦ | 83.15K | +9.5% | $76.55M | 0.1% | ▲ Add | 6 | SEC ↗ |
| 98 | AQR Capital Management ✦ | 37.70K | -9.0% | $34.43M | 0.0% | ▼ Trim | 6 | SEC ↗ |
| 99 | AQR Capital Management ✦ | 37.70K | -9.0% | $34.43M | 0.0% | ▼ Trim | 6 | SEC ↗ |
| 100 | AQR Capital Management ✦ | 37.70K | -9.0% | $34.43M | 0.0% | ▼ Trim | 6 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Marshall Wace | $121.66M | 0.1% |
| Marshall Wace | $121.66M | 0.1% |
Exited
| Norges Bank | $438.01M | was 0.1% |
| Arrowstreet Capital | $3.79M | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 1,109 holders, 45.61M shares, $45.88B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
Frequently co-owned
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Aug 17
DEAN ROBERT W II
Officer · 6 sh · $8,482
Aug 11
CHANG KUO WEI HERBERT
Director · 50 sh · $71,000
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology
Jul 15
SC 13G — Invesco Ltd.
Jul 08
SC 13G/A — FMR LLC
Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR.
Reporting period: Q3 2025 ·
Methodology ·
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