Observatory · observe first
Phillips 66
PSX · United States · Oil & Gas Refining & Marketing · matched S&P 500 member. Follow its market-weight contribution.
Historical time machine
Historical observation
20182026
Universe weight
0.164%
12M weight contribution
+0.052 pp
3M weight contribution
+0.042 pp
12M price return
+90.1%
Share of matched S&P 500 members
Monthly observations through Aug 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 |
|---|---|---|---|---|---|
| Aug 2026 | $98.4bn | 0.164% | +0.052 pp | +90.1% | Yes |
| Jul 2026 | $84.9bn | 0.148% | +0.043 pp | +77.2% | Yes |
| Jun 2026 | $67.8bn | 0.118% | +0.013 pp | +46.6% | Yes |
| May 2026 | $70.5bn | 0.122% | +0.017 pp | +60.3% | Yes |
| Apr 2026 | $71.8bn | 0.097% | -0.004 pp | +78.5% | No |
| Mar 2026 | $73.0bn | 0.106% | -0.013 pp | +53.0% | Yes |
| Feb 2026 | $61.8bn | 0.085% | -0.033 pp | +23.4% | No |
| Jan 2026 | $57.8bn | 0.111% | +0.002 pp | +26.4% | Yes |
| Dec 2025 | $52.0bn | 0.102% | -0.005 pp | +17.5% | No |
| Nov 2025 | $55.2bn | 0.108% | -0.014 pp | +6.1% | Yes |
| Oct 2025 | $54.9bn | 0.107% | -0.011 pp | +16.0% | Yes |
| Sep 2025 | $55.0bn | 0.110% | -0.018 pp | +7.4% | Yes |
| Aug 2025 | $54.0bn | 0.112% | -0.030 pp | -1.2% | Yes |
| Jul 2025 | $49.9bn | 0.105% | -0.004 pp | -12.0% | No |
| Jun 2025 | $48.6bn | 0.105% | -0.007 pp | -12.4% | No |
| May 2025 | $46.3bn | 0.105% | -0.010 pp | -17.2% | No |
| Apr 2025 | $42.4bn | 0.102% | -0.074 pp | -24.8% | No |
| Mar 2025 | $50.3bn | 0.120% | -0.074 pp | -21.8% | Yes |
| Feb 2025 | $52.9bn | 0.118% | -0.056 pp | -5.8% | Yes |
| Jan 2025 | $48.7bn | 0.108% | -0.081 pp | -15.6% | No |
| Dec 2024 | $47.1bn | 0.107% | -0.068 pp | -11.6% | No |
| Nov 2024 | $55.3bn | 0.122% | -0.055 pp | +7.4% | Yes |
| Oct 2024 | $50.3bn | 0.118% | -0.054 pp | +10.3% | No |
| Sep 2024 | $55.0bn | 0.128% | -0.051 pp | +13.0% | No |
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.