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 Real Estate
Telecom Tower REITs0.37%-0.17 ppIndustrial REITs0.24%-0.09 ppHealth Care REITs0.28%+0.05 ppHotel & Resort REITs0.10%-0.03 ppOther Specialized REITs0.08%+0.02 ppTimber REITs0.05%-0.02 ppData Center REITs0.35%-0.02 ppSingle-Family Residential REITs0.05%-0.02 ppOffice REITs0.07%-0.02 ppSelf-Storage REITs0.21%-0.01 ppRetail REITs0.32%-0.01 ppReal Estate Services0.17%-0.01 ppMulti-Family Residential REITs0.21%-0.01 pp
3 · Sub-industry
Inside Data Center REITs
Data Center REITs · weight
0.35%
Industry change · 12M
-0.02 pp
Data Center REITs · contribution
-0.017 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Nov 2024 · 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 |
|---|---|---|---|---|---|---|---|
| Equinix → EQIX | United States | $94.7bn | 0.209% | +0.018 pp | -0.030 pp | +22.9% | Yes |
| Digital Realty → DLR | United States | $64.9bn | 0.143% | +0.023 pp | +0.012 pp | +45.8% | 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.