Security record · archived quarter
MPWR
Monolithic Power Systems, Inc. · Technology · Semiconductors
163Tracked holders
+3Δ holders
37.39MShares held
$40.78BReported value
+6New positions
−4Exits
Momentum inputs (comparable managers):
holder breadth +1.9% ·
share flow -6.9% ·
net new positions +1.2%
— formula
Ownership fragmentation — more holders, smaller aggregate stake
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2026
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 · Q1 2026
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 6.07M | +1.9% | $6.64B | 0.1% | ▲ Add | 4 | SEC ↗ |
| 2 | BlackRock ✦ (passive) | 6.07M | +1.9% | $6.64B | 0.1% | ▲ Add | 4 | SEC ↗ |
| 3 | BlackRock ✦ (passive) | 6.07M | +1.9% | $6.64B | 0.1% | ▲ Add | 4 | SEC ↗ |
| 4 | BlackRock ✦ (passive) | 6.07M | +1.9% | $6.64B | 0.1% | ▲ Add | 4 | SEC ↗ |
| 5 | BlackRock ✦ (passive) | 6.07M | +1.9% | $6.64B | 0.1% | ▲ Add | 4 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 6.07M | +1.9% | $6.64B | 0.1% | ▲ Add | 4 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 6.07M | +1.9% | $6.64B | 0.1% | ▲ Add | 4 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 6.07M | +1.9% | $6.64B | 0.1% | ▲ Add | 4 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 6.07M | +1.9% | $6.64B | 0.1% | ▲ Add | 4 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 6.07M | +1.9% | $6.64B | 0.1% | ▲ Add | 4 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 6.07M | +1.9% | $6.64B | 0.1% | ▲ Add | 4 | SEC ↗ |
| 12 | BlackRock ✦ (passive) | 6.07M | +1.9% | $6.64B | 0.1% | ▲ Add | 4 | SEC ↗ |
| 13 | BlackRock ✦ (passive) | 6.07M | +1.9% | $6.64B | 0.1% | ▲ Add | 4 | SEC ↗ |
| 14 | BlackRock ✦ (passive) | 6.07M | +1.9% | $6.64B | 0.1% | ▲ Add | 4 | SEC ↗ |
| 15 | BlackRock ✦ (passive) | 6.07M | +1.9% | $6.64B | 0.1% | ▲ Add | 4 | SEC ↗ |
| 16 | BlackRock ✦ (passive) | 6.07M | +1.9% | $6.64B | 0.1% | ▲ Add | 4 | SEC ↗ |
| 17 | BlackRock ✦ (passive) | 6.07M | +1.9% | $6.64B | 0.1% | ▲ Add | 4 | SEC ↗ |
| 18 | BlackRock ✦ (passive) | 6.07M | +1.9% | $6.64B | 0.1% | ▲ Add | 4 | SEC ↗ |
| 19 | BlackRock ✦ (passive) | 6.07M | +1.9% | $6.64B | 0.1% | ▲ Add | 4 | SEC ↗ |
| 20 | BlackRock ✦ (passive) | 6.07M | +1.9% | $6.64B | 0.1% | ▲ Add | 4 | SEC ↗ |
| 21 | BlackRock ✦ (passive) | 6.07M | +1.9% | $6.64B | 0.1% | ▲ Add | 4 | SEC ↗ |
| 22 | BlackRock ✦ (passive) | 6.07M | +1.9% | $6.64B | 0.1% | ▲ Add | 4 | SEC ↗ |
| 23 | Fidelity (FMR) ✦ | 4.40M | +10.7% | $4.81B | 0.3% | ▲ Add | 4 | SEC ↗ |
| 24 | Fidelity (FMR) ✦ | 4.40M | +10.7% | $4.81B | 0.3% | ▲ Add | 4 | SEC ↗ |
| 25 | Fidelity (FMR) ✦ | 4.40M | +10.7% | $4.81B | 0.3% | ▲ Add | 4 | SEC ↗ |
| 26 | Fidelity (FMR) ✦ | 4.40M | +10.7% | $4.81B | 0.3% | ▲ Add | 4 | SEC ↗ |
| 27 | Fidelity (FMR) ✦ | 4.40M | +10.7% | $4.81B | 0.3% | ▲ Add | 4 | SEC ↗ |
| 28 | Fidelity (FMR) ✦ | 4.40M | +10.7% | $4.81B | 0.3% | ▲ Add | 4 | SEC ↗ |
| 29 | Vanguard Capital Management Llc | 3.08M | — | $3.37B | 0.1% | n/c | 1 | SEC ↗ |
| 30 | Invesco Ltd. | 2.52M | +0.2% | $2.75B | 0.3% | ▲ Add | 2 | SEC ↗ |
| 31 | Invesco Ltd. | 2.52M | +0.2% | $2.75B | 0.3% | ▲ Add | 2 | SEC ↗ |
| 32 | Invesco Ltd. | 2.52M | +0.2% | $2.75B | 0.3% | ▲ Add | 2 | SEC ↗ |
| 33 | Invesco Ltd. | 2.52M | +0.2% | $2.75B | 0.3% | ▲ Add | 2 | SEC ↗ |
| 34 | Invesco Ltd. | 2.52M | +0.2% | $2.75B | 0.3% | ▲ Add | 2 | SEC ↗ |
| 35 | Invesco Ltd. | 2.52M | +0.2% | $2.75B | 0.3% | ▲ Add | 2 | SEC ↗ |
| 36 | Invesco Ltd. | 2.52M | +0.2% | $2.75B | 0.3% | ▲ Add | 2 | SEC ↗ |
| 37 | Invesco Ltd. | 2.52M | +0.2% | $2.75B | 0.3% | ▲ Add | 2 | SEC ↗ |
| 38 | Invesco Ltd. | 2.52M | +0.2% | $2.75B | 0.3% | ▲ Add | 2 | SEC ↗ |
| 39 | Invesco Ltd. | 2.52M | +0.2% | $2.75B | 0.3% | ▲ Add | 2 | SEC ↗ |
| 40 | Invesco Ltd. | 2.52M | +0.2% | $2.75B | 0.3% | ▲ Add | 2 | SEC ↗ |
| 41 | Invesco Ltd. | 2.52M | +0.2% | $2.75B | 0.3% | ▲ Add | 2 | SEC ↗ |
| 42 | Invesco Ltd. | 2.52M | +0.2% | $2.75B | 0.3% | ▲ Add | 2 | SEC ↗ |
| 43 | Invesco Ltd. | 2.52M | +0.2% | $2.75B | 0.3% | ▲ Add | 2 | SEC ↗ |
| 44 | Invesco Ltd. | 2.52M | +0.2% | $2.75B | 0.3% | ▲ Add | 2 | SEC ↗ |
| 45 | State Street Global Advisors ✦ (passive) | 2.19M | +0.4% | $2.40B | 0.1% | ▲ Add | 6 | SEC ↗ |
| 46 | Geode Capital Management ✦ (passive) | 1.43M | +3.6% | $1.56B | 0.1% | ▲ Add | 8 | SEC ↗ |
| 47 | Geode Capital Management ✦ (passive) | 1.43M | +3.6% | $1.56B | 0.1% | ▲ Add | 8 | SEC ↗ |
| 48 | T. Rowe Price ✦ | 1.26M | -25.3% | $1.38B | 0.2% | ▼ Trim | 8 | SEC ↗ |
| 49 | T. Rowe Price ✦ | 1.26M | -25.3% | $1.38B | 0.2% | ▼ Trim | 8 | SEC ↗ |
| 50 | Franklin Resources Inc | 928.67K | -11.5% | $1.02B | 0.2% | ▼ Trim | 2 | SEC ↗ |
| 51 | Franklin Resources Inc | 928.67K | -11.5% | $1.02B | 0.2% | ▼ Trim | 2 | SEC ↗ |
| 52 | Franklin Resources Inc | 928.67K | -11.5% | $1.02B | 0.2% | ▼ Trim | 2 | SEC ↗ |
| 53 | Franklin Resources Inc | 928.67K | -11.5% | $1.02B | 0.2% | ▼ Trim | 2 | SEC ↗ |
| 54 | Franklin Resources Inc | 928.67K | -11.5% | $1.02B | 0.2% | ▼ Trim | 2 | SEC ↗ |
| 55 | Franklin Resources Inc | 928.67K | -11.5% | $1.02B | 0.2% | ▼ Trim | 2 | SEC ↗ |
| 56 | Franklin Resources Inc | 928.67K | -11.5% | $1.02B | 0.2% | ▼ Trim | 2 | SEC ↗ |
| 57 | Franklin Resources Inc | 928.67K | -11.5% | $1.02B | 0.2% | ▼ Trim | 2 | SEC ↗ |
| 58 | Morgan Stanley ✦ | 656.37K | +1.1% | $717.64M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 59 | Morgan Stanley ✦ | 656.37K | +1.1% | $717.64M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 60 | Morgan Stanley ✦ | 656.37K | +1.1% | $717.64M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 61 | Morgan Stanley ✦ | 656.37K | +1.1% | $717.64M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 62 | Morgan Stanley ✦ | 656.37K | +1.1% | $717.64M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 63 | Morgan Stanley ✦ | 656.37K | +1.1% | $717.64M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 64 | Morgan Stanley ✦ | 656.37K | +1.1% | $717.64M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 65 | Morgan Stanley ✦ | 656.37K | +1.1% | $717.64M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 66 | Morgan Stanley ✦ | 656.37K | +1.1% | $717.64M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 67 | Morgan Stanley ✦ | 656.37K | +1.1% | $717.64M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 68 | Morgan Stanley ✦ | 656.37K | +1.1% | $717.64M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 69 | Morgan Stanley ✦ | 656.37K | +1.1% | $717.64M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 70 | Morgan Stanley ✦ | 656.37K | +1.1% | $717.64M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 71 | Morgan Stanley ✦ | 656.37K | +1.1% | $717.64M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 72 | Morgan Stanley ✦ | 656.37K | +1.1% | $717.64M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 73 | First Trust Advisors Lp | 591.35K | -15.7% | $646.56M | 0.5% | ▼ Trim | 2 | SEC ↗ |
| 74 | Goldman Sachs Group ✦ | 568.06K | -4.3% | $621.09M | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 75 | Goldman Sachs Group ✦ | 568.06K | -4.3% | $621.09M | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 76 | Goldman Sachs Group ✦ | 568.06K | -4.3% | $621.09M | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 77 | Goldman Sachs Group ✦ | 568.06K | -4.3% | $621.09M | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 78 | Goldman Sachs Group ✦ | 568.06K | -4.3% | $621.09M | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 79 | Massachusetts Financial Services Co… | 567.77K | -0.5% | $620.75M | 0.2% | ▼ Trim | 2 | SEC ↗ |
| 80 | Massachusetts Financial Services Co… | 567.77K | -0.5% | $620.75M | 0.2% | ▼ Trim | 2 | SEC ↗ |
| 81 | Massachusetts Financial Services Co… | 567.77K | -0.5% | $620.75M | 0.2% | ▼ Trim | 2 | SEC ↗ |
| 82 | Massachusetts Financial Services Co… | 567.77K | -0.5% | $620.75M | 0.2% | ▼ Trim | 2 | SEC ↗ |
| 83 | Massachusetts Financial Services Co… | 567.77K | -0.5% | $620.75M | 0.2% | ▼ Trim | 2 | SEC ↗ |
| 84 | Massachusetts Financial Services Co… | 567.77K | -0.5% | $620.75M | 0.2% | ▼ Trim | 2 | SEC ↗ |
| 85 | Massachusetts Financial Services Co… | 567.77K | -0.5% | $620.75M | 0.2% | ▼ Trim | 2 | SEC ↗ |
| 86 | Barclays Plc | 555.81K | -8.1% | $607.69M | 0.2% | ▼ Trim | 2 | SEC ↗ |
| 87 | Barclays Plc | 555.81K | -8.1% | $607.69M | 0.2% | ▼ Trim | 2 | SEC ↗ |
| 88 | Barclays Plc | 555.81K | -8.1% | $607.69M | 0.2% | ▼ Trim | 2 | SEC ↗ |
| 89 | Barclays Plc | 555.81K | -8.1% | $607.69M | 0.2% | ▼ Trim | 2 | SEC ↗ |
| 90 | Barclays Plc | 555.81K | -8.1% | $607.69M | 0.2% | ▼ Trim | 2 | SEC ↗ |
| 91 | UBS Group AG | 540.41K | +23.1% | $590.86M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 92 | UBS Group AG | 540.41K | +23.1% | $590.86M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 93 | UBS Group AG | 540.41K | +23.1% | $590.86M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 94 | UBS Group AG | 540.41K | +23.1% | $590.86M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 95 | UBS Group AG | 540.41K | +23.1% | $590.86M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 96 | JPMorgan Chase ✦ | 554.92K | +8.3% | $556.22M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 97 | JPMorgan Chase ✦ | 554.92K | +8.3% | $556.22M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 98 | JPMorgan Chase ✦ | 554.92K | +8.3% | $556.22M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 99 | JPMorgan Chase ✦ | 554.92K | +8.3% | $556.22M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 100 | JPMorgan Chase ✦ | 554.92K | +8.3% | $556.22M | 0.0% | ▲ Add | 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
| Norges Bank | $658.66M | was 0.1% |
| Millennium Management | $22.37M | was 0.0% |
| Alyeska Investment Group, L.P. | $19.56M | was 0.1% |
| Group One Trading Llc | $842,008 | 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: Q1 2026 ·
Methodology ·
Get this via the API