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
0.69%
Industry change · 12M
-0.08 pp
Oil & Gas Exploration & Production · contribution
-0.085 pp
Company participation
33%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Dec 2025 · 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 |
|---|---|---|---|---|---|---|---|
| Expand Energy → EXE | United States | $26.3bn | 0.051% | +0.001 pp | +0.051 pp | +14.4% | Yes |
| EOG Resources → EOG | United States | $57.0bn | 0.112% | -0.011 pp | -0.045 pp | -11.4% | No |
| ConocoPhillips → COP | United States | $115.7bn | 0.227% | -0.010 pp | -0.032 pp | -2.3% | No |
| Occidental Petroleum → OXY | United States | $40.5bn | 0.079% | -0.014 pp | -0.026 pp | -14.9% | No |
| Diamondback Energy → FANG | United States | $43.1bn | 0.084% | +0.001 pp | -0.024 pp | -5.6% | No |
| Texas Pacific Land Corporation → TPL | United States | $6.6bn | 0.013% | -0.001 pp | -0.006 pp | -21.6% | No |
| Devon Energy → DVN | United States | $23.0bn | 0.045% | +0.000 pp | -0.004 pp | +15.0% | Yes |
| EQT Corporation → EQT | United States | $33.5bn | 0.066% | -0.002 pp | +0.003 pp | +17.6% | No |
| APA Corporation → APA | United States | $8.7bn | 0.017% | -0.000 pp | -0.002 pp | +11.5% | Yes |
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.