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 REITs0.67%-0.13 ppHotel & Resort REITs0.16%+0.12 ppReal Estate Services0.20%+0.09 ppData Center REITs0.33%-0.08 ppSingle-Family Residential REITs0.07%+0.07 ppMulti-Family Residential REITs0.29%-0.04 ppOffice REITs0.12%-0.04 ppSelf-Storage REITs0.25%-0.03 ppHealth Care REITs0.22%-0.02 ppTimber REITs0.08%-0.01 ppOther Specialized REITs0.05%+0.01 ppRetail REITs0.37%+0.01 ppIndustrial REITs0.37%-0.01 pp
3 · Sub-industry
Inside Real Estate Services
Real Estate Services · weight
0.20%
Industry change · 12M
+0.09 pp
Real Estate Services · contribution
+0.089 pp
Company participation
50%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Nov 2022 · 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 | $33.0bn | 0.112% | +0.112 pp | +0.112 pp | +4.2% | Yes |
| CBRE Group → CBRE | United States | $25.1bn | 0.085% | -0.005 pp | -0.023 pp | -16.7% | 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.