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 REITs0.40%-0.09 ppIndustrial REITs0.25%-0.07 ppHealth Care REITs0.30%+0.06 ppHotel & Resort REITs0.11%-0.03 ppOther Specialized REITs0.09%+0.03 ppMulti-Family Residential REITs0.21%-0.02 ppTimber REITs0.05%-0.02 ppData Center REITs0.34%-0.02 ppSingle-Family Residential REITs0.05%-0.02 ppReal Estate Services0.16%-0.01 ppOffice REITs0.08%-0.01 ppRetail REITs0.32%+0.01 ppSelf-Storage REITs0.22%-0.00 pp
3 · Sub-industry
Inside Self-Storage REITs
Self-Storage REITs · weight
0.22%
Industry change · 12M
-0.00 pp
Self-Storage REITs · contribution
-0.000 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Oct 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 |
|---|---|---|---|---|---|---|---|
| Public Storage → PSA | United States | $57.6bn | 0.135% | +0.043 pp | -0.007 pp | +43.6% | Yes |
| Extra Space Storage → EXR | United States | $34.6bn | 0.081% | +0.021 pp | +0.007 pp | +64.3% | 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.