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 REITs0.26%-0.13 ppReal Estate Services0.09%-0.07 ppMulti-Family Residential REITs0.14%-0.06 ppSelf-Storage REITs0.15%-0.05 ppRetail REITs0.27%-0.03 ppData Center REITs0.30%-0.03 ppHealth Care REITs0.35%+0.02 ppHotel & Resort REITs0.08%-0.02 ppOffice REITs0.03%-0.02 ppSingle-Family Residential REITs0.03%-0.02 ppTimber REITs0.03%-0.01 ppIndustrial REITs0.23%+0.00 ppOther Specialized REITs0.07%+0.00 pp
3 · Sub-industry
Inside Real Estate Services
Real Estate Services · weight
0.09%
Industry change · 12M
-0.07 pp
Real Estate Services · contribution
-0.069 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
May 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 |
|---|---|---|---|---|---|---|---|
| CoStar Group → CSGP | United States | $13.1bn | 0.023% | -0.003 pp | -0.048 pp | -56.2% | No |
| CBRE Group → CBRE | United States | $36.6bn | 0.063% | +0.004 pp | -0.021 pp | +0.0% | 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.