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 REITs0.41%-0.19 ppIndustrial REITs0.27%-0.12 ppMulti-Family Residential REITs0.23%-0.05 ppSelf-Storage REITs0.21%-0.03 ppHotel & Resort REITs0.12%-0.03 ppHealth Care REITs0.25%+0.02 ppOffice REITs0.09%-0.01 ppOther Specialized REITs0.07%+0.01 ppTimber REITs0.06%-0.01 ppRetail REITs0.34%-0.01 ppSingle-Family Residential REITs0.06%-0.01 ppData Center REITs0.32%-0.00 ppReal Estate Services0.19%-0.00 pp
3 · Sub-industry
Inside Self-Storage REITs
Self-Storage REITs · weight
0.21%
Industry change · 12M
-0.03 pp
Self-Storage REITs · contribution
-0.030 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Apr 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 | $45.6bn | 0.132% | -0.016 pp | -0.043 pp | -8.2% | No |
| Extra Space Storage → EXR | United States | $28.4bn | 0.082% | -0.008 pp | +0.013 pp | -7.6% | 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.