Security record · archived quarter
MPWR
Monolithic Power Systems, Inc. · Technology · Semiconductors
15Tracked holders
-3Δ holders
21.56MShares held
$15.77BReported value
+0New positions
−3Exits
Momentum inputs (comparable managers):
holder breadth -16.7% ·
share flow -2.3% ·
net new positions -20.0%
— formula
Broad distribution — falling shares and fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 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 · Q2 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | The Vanguard Group ✦ (passive) | 5.94M | — | $4.34B | 0.1% | n/c | 1 | SEC ↗ |
| 2 | The Vanguard Group ✦ (passive) | 5.94M | — | $4.34B | 0.1% | n/c | 1 | SEC ↗ |
| 3 | The Vanguard Group ✦ (passive) | 5.94M | — | $4.34B | 0.1% | n/c | 1 | SEC ↗ |
| 4 | The Vanguard Group ✦ (passive) | 5.94M | — | $4.34B | 0.1% | n/c | 1 | SEC ↗ |
| 5 | The Vanguard Group ✦ (passive) | 5.94M | — | $4.34B | 0.1% | n/c | 1 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 5.23M | — | $3.82B | 0.1% | n/c | 1 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 5.23M | — | $3.82B | 0.1% | n/c | 1 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 5.23M | — | $3.82B | 0.1% | n/c | 1 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 5.23M | — | $3.82B | 0.1% | n/c | 1 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 5.23M | — | $3.82B | 0.1% | n/c | 1 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 5.23M | — | $3.82B | 0.1% | n/c | 1 | SEC ↗ |
| 12 | BlackRock ✦ (passive) | 5.23M | — | $3.82B | 0.1% | n/c | 1 | SEC ↗ |
| 13 | BlackRock ✦ (passive) | 5.23M | — | $3.82B | 0.1% | n/c | 1 | SEC ↗ |
| 14 | BlackRock ✦ (passive) | 5.23M | — | $3.82B | 0.1% | n/c | 1 | SEC ↗ |
| 15 | BlackRock ✦ (passive) | 5.23M | — | $3.82B | 0.1% | n/c | 1 | SEC ↗ |
| 16 | BlackRock ✦ (passive) | 5.23M | — | $3.82B | 0.1% | n/c | 1 | SEC ↗ |
| 17 | BlackRock ✦ (passive) | 5.23M | — | $3.82B | 0.1% | n/c | 1 | SEC ↗ |
| 18 | BlackRock ✦ (passive) | 5.23M | — | $3.82B | 0.1% | n/c | 1 | SEC ↗ |
| 19 | BlackRock ✦ (passive) | 5.23M | — | $3.82B | 0.1% | n/c | 1 | SEC ↗ |
| 20 | BlackRock ✦ (passive) | 5.23M | — | $3.82B | 0.1% | n/c | 1 | SEC ↗ |
| 21 | BlackRock ✦ (passive) | 5.23M | — | $3.82B | 0.1% | n/c | 1 | SEC ↗ |
| 22 | BlackRock ✦ (passive) | 5.23M | — | $3.82B | 0.1% | n/c | 1 | SEC ↗ |
| 23 | BlackRock ✦ (passive) | 5.23M | — | $3.82B | 0.1% | n/c | 1 | SEC ↗ |
| 24 | BlackRock ✦ (passive) | 5.23M | — | $3.82B | 0.1% | n/c | 1 | SEC ↗ |
| 25 | BlackRock ✦ (passive) | 5.23M | — | $3.82B | 0.1% | n/c | 1 | SEC ↗ |
| 26 | BlackRock ✦ (passive) | 5.23M | — | $3.82B | 0.1% | n/c | 1 | SEC ↗ |
| 27 | Fidelity (FMR) ✦ | 3.39M | — | $2.48B | 0.1% | n/c | 1 | SEC ↗ |
| 28 | Fidelity (FMR) ✦ | 3.39M | — | $2.48B | 0.1% | n/c | 1 | SEC ↗ |
| 29 | Fidelity (FMR) ✦ | 3.39M | — | $2.48B | 0.1% | n/c | 1 | SEC ↗ |
| 30 | Fidelity (FMR) ✦ | 3.39M | — | $2.48B | 0.1% | n/c | 1 | SEC ↗ |
| 31 | Fidelity (FMR) ✦ | 3.39M | — | $2.48B | 0.1% | n/c | 1 | SEC ↗ |
| 32 | State Street Global Advisors ✦ (passive) | 2.12M | +0.2% | $1.55B | 0.1% | ▲ Add | 3 | SEC ↗ |
| 33 | T. Rowe Price ✦ | 2.09M | +2.7% | $1.53B | 0.2% | ▲ Add | 5 | SEC ↗ |
| 34 | T. Rowe Price ✦ | 2.09M | +2.7% | $1.53B | 0.2% | ▲ Add | 5 | SEC ↗ |
| 35 | Geode Capital Management ✦ (passive) | 1.32M | -6.2% | $962.04M | 0.1% | ▼ Trim | 5 | SEC ↗ |
| 36 | Geode Capital Management ✦ (passive) | 1.32M | -6.2% | $962.04M | 0.1% | ▼ Trim | 5 | SEC ↗ |
| 37 | Wellington Management ✦ | 703.15K | -7.7% | $514.27M | 0.1% | ▼ Trim | 5 | SEC ↗ |
| 38 | Wellington Management ✦ | 703.15K | -7.7% | $514.27M | 0.1% | ▼ Trim | 5 | SEC ↗ |
| 39 | Wellington Management ✦ | 703.15K | -7.7% | $514.27M | 0.1% | ▼ Trim | 5 | SEC ↗ |
| 40 | Wellington Management ✦ | 703.15K | -7.7% | $514.27M | 0.1% | ▼ Trim | 5 | SEC ↗ |
| 41 | Norges Bank ✦ (passive) | 598.89K | +0.8% | $438.01M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 42 | Adage Capital Partners ✦ | 75.95K | -34.6% | $55.55M | 0.1% | ▼ Trim | 5 | SEC ↗ |
| 43 | AQR Capital Management ✦ | 41.44K | -43.4% | $30.31M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 44 | AQR Capital Management ✦ | 41.44K | -43.4% | $30.31M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 45 | AQR Capital Management ✦ | 41.44K | -43.4% | $30.31M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 46 | AQR Capital Management ✦ | 41.44K | -43.4% | $30.31M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 47 | AQR Capital Management ✦ | 41.44K | -43.4% | $30.31M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 48 | Gotham Asset Management ✦ | 20.14K | +23.1% | $14.73M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 49 | Millennium Management ✦ | 15.53K | -89.5% | $11.36M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 50 | Citadel Advisors ✦ | 7.65K | +887.1% | $5.60M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 51 | Citadel Advisors ✦ | 7.65K | +887.1% | $5.60M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 52 | D. E. Shaw & Co. ✦ | 5.43K | -25.4% | $3.97M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 53 | Arrowstreet Capital ✦ | 5.18K | -60.3% | $3.79M | 0.0% | ▼ Trim | 3 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| No new tracked buyers this quarter. |
Exited
| Coatue Management | $112.19M | was 0.5% |
| Marshall Wace | $10.53M | was 0.0% |
| Bridgewater Associates | $1.90M | 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 24
CHANG KUO WEI HERBERT
Director · 50 sh · $64,078
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: Q2 2025 ·
Methodology ·
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