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 Technology28.8%+2.60 ppConsumer Discretionary12.5%+1.60 ppIndustrials10.0%+0.17 ppEnergy3.5%-0.07 ppMaterials2.9%-0.09 ppReal Estate2.9%-0.37 ppHealth Care15.9%-0.60 ppCommunication Services2.8%-0.63 ppConsumer Staples7.1%-0.63 ppUtilities2.9%-0.75 ppFinancials10.7%-1.24 pp

2 · Industry

Inside Real Estate

Telecom Tower REITs0.49%-0.33 ppReal Estate Services0.19%+0.10 ppMulti-Family Residential REITs0.26%-0.07 ppSingle-Family Residential REITs0.07%+0.07 ppSelf-Storage REITs0.24%-0.06 ppRetail REITs0.33%-0.04 ppOffice REITs0.10%-0.04 ppIndustrial REITs0.37%+0.04 ppHotel & Resort REITs0.14%-0.02 ppData Center REITs0.36%+0.02 ppHealth Care REITs0.23%-0.02 ppTimber REITs0.08%-0.01 ppOther Specialized REITs0.06%+0.00 pp

3 · Sub-industry

Inside Other Specialized REITs

Other Specialized REITs0.06%+0.004 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
+0.00 pp
Other Specialized REITs · contribution
+0.004 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Aug 2023 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Iron Mountain →
IRM
United States$18.5bn0.059%+0.021 pp+0.004 pp+26.4%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.