Observatory · observe first
Follow the allocation change
Matched S&P 500 members → sector → industry → sub-industry → company. Each step uses the same percentage points.
Historical time machine
Historical observation
20182026
1 · Sector
Weight and 12M allocation change
2 · Industry
Inside Energy
3 · Sub-industry
Inside Oil & Gas Exploration & Production
Oil & Gas Exploration & Production · weight
0.66%
Industry change · 12M
-0.16 pp
Oil & Gas Exploration & Production · contribution
-0.156 pp
Company participation
22%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Apr 2026 · sorted by absolute contribution to 12-month change
| Company | Country | Market cap | Universe weight | 3M contribution | 12M contribution | 12M price return | Above 6M weight average |
|---|---|---|---|---|---|---|---|
| ConocoPhillips → COP | United States | $153.2bn | 0.208% | -0.039 pp | -0.064 pp | +46.0% | No |
| EOG Resources → EOG | United States | $75.4bn | 0.102% | -0.014 pp | -0.044 pp | +31.9% | No |
| Expand Energy → EXE | United States | $24.4bn | 0.033% | -0.018 pp | -0.026 pp | +1.4% | No |
| EQT Corporation → EQT | United States | $37.6bn | 0.051% | -0.018 pp | -0.020 pp | +23.0% | No |
| Texas Pacific Land Corporation → TPL | United States | $30.6bn | 0.041% | +0.026 pp | +0.018 pp | +3.9% | Yes |
| Diamondback Energy → FANG | United States | $58.0bn | 0.079% | -0.011 pp | -0.013 pp | +60.0% | No |
| Occidental Petroleum → OXY | United States | $59.7bn | 0.081% | -0.004 pp | -0.008 pp | +57.0% | No |
| APA Corporation → APA | United States | $14.4bn | 0.020% | +0.002 pp | +0.006 pp | +173.0% | Yes |
| Devon Energy → DVN | United States | $31.9bn | 0.043% | -0.005 pp | -0.004 pp | +73.3% | No |
Company contributions use weights among matched S&P 500 members and add through each level without rescaling. Companies without matched shares and prices are omitted. These observations do not establish official index weights or actual fund flows.