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
Hotel & Resort REITs0.16%+0.12 ppRetail REITs0.37%+0.06 ppData Center REITs0.35%-0.05 ppMulti-Family Residential REITs0.34%+0.03 ppTelecom Tower REITs0.83%-0.03 ppOffice REITs0.14%-0.03 ppSelf-Storage REITs0.28%+0.02 ppReal Estate Services0.10%-0.01 ppIndustrial REITs0.34%+0.01 ppHealth Care REITs0.26%-0.01 ppTimber REITs0.09%+0.01 ppOther Specialized REITs0.05%+0.01 ppSingle-Family Residential REITs0.00%+0.00 pp
3 · Sub-industry
Inside Self-Storage REITs
Self-Storage REITs · weight
0.28%
Industry change · 12M
+0.02 pp
Self-Storage REITs · contribution
+0.017 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jul 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 |
|---|---|---|---|---|---|---|---|
| Public Storage → PSA | United States | $57.3bn | 0.197% | -0.039 pp | +0.009 pp | +11.4% | No |
| Extra Space Storage → EXR | United States | $25.4bn | 0.087% | -0.005 pp | +0.008 pp | +12.1% | 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.