Observatory · observe first
Monolithic Power Systems
MPWR · United States · Semiconductors · matched S&P 500 member. Follow its market-weight contribution.
Historical time machine
Latest available · not live
20182026
Universe weight
0.111%
12M weight contribution
+0.023 pp
3M weight contribution
-0.007 pp
12M price return
+47.3%
Share of matched S&P 500 members
Monthly observations through Sep 2026
Company price index
A separate dimension from market allocation
Historical observations
Most recent 24 observations at or before the selected month
| Month | Market cap | Universe weight | 12M weight change | 12M return | Above 6M weight average |
|---|---|---|---|---|---|
| Sep 2026 | $66.2bn | 0.111% | +0.023 pp | +47.3% | No |
| Aug 2026 | $62.3bn | 0.104% | +0.021 pp | +52.8% | No |
| Jul 2026 | $70.1bn | 0.122% | +0.050 pp | +101.9% | Yes |
| Jun 2026 | $67.9bn | 0.118% | +0.043 pp | +90.3% | Yes |
| May 2026 | $76.9bn | 0.133% | +0.062 pp | +138.4% | Yes |
| Apr 2026 | $79.3bn | 0.108% | +0.039 pp | +174.3% | Yes |
| Mar 2026 | $53.7bn | 0.078% | +0.012 pp | +89.9% | No |
| Feb 2026 | $56.1bn | 0.077% | +0.010 pp | +88.6% | No |
| Jan 2026 | $53.9bn | 0.103% | +0.034 pp | +77.8% | Yes |
| Dec 2025 | $43.4bn | 0.085% | +0.020 pp | +54.5% | Yes |
| Nov 2025 | $44.5bn | 0.087% | +0.026 pp | +64.9% | Yes |
| Oct 2025 | $48.1bn | 0.094% | +0.007 pp | +33.5% | Yes |
| Sep 2025 | $44.1bn | 0.088% | -0.017 pp | +0.4% | Yes |
| Aug 2025 | $40.0bn | 0.083% | -0.027 pp | -9.8% | Yes |
| Jul 2025 | $34.1bn | 0.072% | -0.003 pp | -16.9% | Yes |
| Jun 2025 | $35.0bn | 0.076% | +0.001 pp | -10.3% | Yes |
| May 2025 | $31.7bn | 0.072% | +0.003 pp | -9.3% | Yes |
| Apr 2025 | $28.4bn | 0.068% | -0.026 pp | -10.7% | Yes |
| Mar 2025 | $27.8bn | 0.066% | -0.026 pp | -13.7% | No |
| Feb 2025 | $29.8bn | 0.067% | -0.034 pp | -14.6% | No |
| Jan 2025 | $31.1bn | 0.069% | -0.017 pp | +6.5% | No |
| Dec 2024 | $28.9bn | 0.065% | -0.025 pp | -5.6% | No |
| Nov 2024 | $27.7bn | 0.061% | -0.021 pp | +4.1% | No |
| Oct 2024 | $37.0bn | 0.087% | +0.015 pp | +73.0% | Yes |
Its weight is estimated market cap divided by the total estimated market cap of matched S&P 500 members for the month. This is not an official float-adjusted S&P index weight.