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
Universe›Real Estate›Other Specialized REITs›Other Specialized REITs

1 · Sector

Weight and 12M allocation change

Health Care18.1%+1.27 ppUtilities3.8%+0.64 ppInformation Technology17.5%+0.52 ppReal Estate3.7%+0.46 ppMaterials2.5%+0.41 ppCommunication Services3.6%+0.24 ppConsumer Discretionary7.1%+0.12 ppEnergy4.3%-0.09 ppConsumer Staples8.8%-0.25 ppIndustrials14.2%-1.17 ppFinancials16.5%-2.16 pp

2 · Industry

Inside Real Estate

Telecom Tower REITs0.85%+0.11 ppHealth Care REITs0.38%+0.10 ppRetail REITs0.58%+0.09 ppMulti-Family Residential REITs0.40%+0.08 ppIndustrial REITs0.26%+0.06 ppTimber REITs0.11%-0.05 ppData Center REITs0.33%+0.02 ppOffice REITs0.21%+0.02 ppSelf-Storage REITs0.28%+0.02 ppOther Specialized REITs0.06%+0.01 ppReal Estate Services0.10%+0.00 ppHotel & Resort REITs0.08%+0.00 ppSingle-Family Residential REITs0.00%+0.00 pp

3 · Sub-industry

Inside Other Specialized REITs

Other Specialized REITs0.06%+0.005 pp
Concentrated

Most of this industry's gains came from a few companies.

View all contributions →
Other Specialized REITs · weight
0.06%
Industry change · 12M
+0.01 pp
Other Specialized REITs · contribution
+0.005 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Feb 2019 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Iron Mountain →
IRM
United States$10.1bn0.059%+0.026 pp+0.005 pp+20.6%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.