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

Information Technology17.9%+7.83 ppFinancials16.1%+6.61 ppHealth Care16.1%+6.02 ppIndustrials13.5%+5.47 ppConsumer Staples9.2%+4.37 ppCommunication Services5.3%+3.38 ppMaterials3.3%+2.18 ppUtilities4.0%+2.09 ppReal Estate3.9%+2.04 ppEnergy3.6%+0.96 ppConsumer Discretionary7.1%-40.93 pp

2 · Industry

Inside Real Estate

Telecom Tower REITs0.97%+0.56 ppHealth Care REITs0.43%+0.26 ppMulti-Family Residential REITs0.44%+0.24 ppRetail REITs0.52%+0.23 ppData Center REITs0.40%+0.22 ppIndustrial REITs0.29%+0.17 ppSelf-Storage REITs0.31%+0.16 ppOffice REITs0.20%+0.10 ppReal Estate Services0.09%+0.05 ppTimber REITs0.11%+0.03 ppOther Specialized REITs0.05%+0.02 ppHotel & Resort REITs0.07%+0.02 ppSingle-Family Residential REITs0.00%+0.00 pp

3 · Sub-industry

Inside Other Specialized REITs

Other Specialized REITs0.05%+0.018 pp
Concentrated

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

View all contributions →
Other Specialized REITs · weight
0.05%
Industry change · 12M
+0.02 pp
Other Specialized REITs · contribution
+0.018 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

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

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Iron Mountain →
IRM
United States$9.3bn0.049%+0.001 pp+0.018 pp+0.9%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.