MPWR
Monolithic Power Systems, Inc. · Technology · Semiconductors
Momentum inputs (comparable managers):
holder breadth +15.4% ·
share flow +2.6% ·
net new positions +13.3%
· formula
Broad accumulation: rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 164 | +5 | 38.02M | $52.44B | +8 | −4 |
| 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 | n/a | −3 |
| Q1 2025 | 15 | +2 | 7.50M | $4.35B | +2 | n/a |
| Q4 2024 | 13 | +2 | 7.31M | $4.33B | +2 | n/a |
| Q3 2024 | 10 | -2 | 4.86M | $4.49B | n/a | −2 |
| Q2 2024 | 12 | n/a | 4.81M | $3.95B | n/a | n/a |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | State Street Global Advisors ✦ (passive) | 2.12M | -2.0% | $1.23B | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 2 | T. Rowe Price ✦ | 2.03M | +33.1% | $1.18B | 0.1% | ▲ Add | 4 | SEC ↗ ×2 |
| 3 | Geode Capital Management ✦ (passive) | 1.41M | +3.0% | $814.38M | 0.1% | ▲ Add | 4 | SEC ↗ ×2 |
| 4 | Wellington Management ✦ | 761.91K | -10.7% | $441.89M | 0.1% | ▼ Trim | 4 | SEC ↗ ×4 |
| 5 | Norges Bank ✦ (passive) | 594.32K | -28.8% | $344.69M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 6 | Coatue Management ✦ | 193.43K | New | $112.19M | 0.5% | New | 1 | SEC ↗ ×3 |
| 7 | Millennium Management ✦ | 148.50K | +19.2% | $86.13M | 0.1% | ▲ Add | 4 | SEC ↗ |
| 8 | Adage Capital Partners ✦ | 116.10K | +24.0% | $67.34M | 0.1% | ▲ Add | 4 | SEC ↗ |
| 9 | AQR Capital Management ✦ | 73.24K | -17.4% | $41.36M | 0.0% | ▼ Trim | 4 | SEC ↗ ×5 |
| 10 | Marshall Wace ✦ | 18.16K | -82.7% | $10.53M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 11 | Gotham Asset Management ✦ | 16.36K | +6.4% | $9.49M | 0.1% | ▲ Add | 4 | SEC ↗ |
| 12 | Arrowstreet Capital ✦ | 13.03K | +1596.7% | $7.56M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 13 | D. E. Shaw & Co. ✦ | 7.28K | -40.9% | $4.22M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 14 | Bridgewater Associates ✦ | 3.28K | New | $1.90M | 0.0% | New | 1 | SEC ↗ |
| 15 | Citadel Advisors ✦ | 775 | -99.4% | $449,485 | 0.0% | ▼ Trim | 4 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| Coatue Management | $112.19M | 0.5% |
| Bridgewater Associates | $1.90M | 0.0% |
Exited
| No tracked exits this quarter. |
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.
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)
Officer, Director · 130 sh · $176,402
Officer, Director · 596 sh · $788,693
Officer, Director · 2.12K sh · $2.82M
Officer, Director · 1.11K sh · $1.48M
Officer, Director · 2.95K sh · $3.95M
Officer, Director · 5.78K sh · $7.77M
Officer, Director · 6.34K sh · $8.54M
Officer, Director · 10.97K sh · $14.82M
Officer · 32 sh · $41,527
Director · 50 sh · $64,078
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology