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 Technology17.0%+0.98 ppEnergy5.1%+0.38 ppUtilities3.4%+0.28 ppReal Estate3.4%+0.12 ppHealth Care16.8%+0.09 ppConsumer Discretionary7.1%+0.05 ppMaterials2.1%-0.04 ppCommunication Services3.3%-0.22 ppFinancials18.2%-0.27 ppIndustrials15.0%-0.59 ppConsumer Staples8.6%-0.79 pp

2 · Industry

Inside Real Estate

Self-Storage REITs0.29%+0.03 ppMulti-Family Residential REITs0.36%+0.03 ppIndustrial REITs0.21%+0.02 ppRetail REITs0.51%+0.01 ppTimber REITs0.17%+0.01 ppOffice REITs0.19%+0.01 ppOther Specialized REITs0.06%+0.01 ppReal Estate Services0.09%+0.01 ppData Center REITs0.34%+0.00 ppTelecom Tower REITs0.74%-0.00 ppHealth Care REITs0.30%-0.00 ppHotel & Resort REITs0.09%+0.00 ppSingle-Family Residential REITs0.00%+0.00 pp

3 · Sub-industry

Inside Other Specialized REITs

Other Specialized REITs0.06%+0.006 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
+0.006 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Apr 2018 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Iron Mountain →
IRM
United States$9.7bn0.060%+0.006 pp+0.006 pp-1.4%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.