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 Technology27.5%+27.47 ppHealth Care16.1%+16.09 ppIndustrials11.8%+11.83 ppConsumer Discretionary7.3%+7.33 ppConsumer Staples7.0%+6.99 ppCommunication Services4.3%+4.28 ppMaterials3.2%+3.15 ppReal Estate3.1%+3.13 ppUtilities3.0%+2.99 ppEnergy2.3%+2.34 ppFinancials14.3%-85.61 pp

2 · Industry

Inside Real Estate

Telecom Tower REITs0.81%+0.81 ppData Center REITs0.39%+0.39 ppIndustrial REITs0.33%+0.33 ppRetail REITs0.32%+0.32 ppMulti-Family Residential REITs0.31%+0.31 ppSelf-Storage REITs0.26%+0.26 ppHealth Care REITs0.26%+0.26 ppOffice REITs0.16%+0.16 ppReal Estate Services0.11%+0.11 ppTimber REITs0.09%+0.09 ppOther Specialized REITs0.04%+0.04 ppHotel & Resort REITs0.04%+0.04 ppSingle-Family Residential REITs0.00%+0.00 pp

3 · Sub-industry

Inside Other Specialized REITs

Other Specialized REITs0.04%+0.044 pp
Concentrated

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

View all contributions →
Other Specialized REITs · weight
0.04%
Industry change · 12M
+0.04 pp
Other Specialized REITs · contribution
+0.044 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Sep 2021 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Iron Mountain →
IRM
United States$12.6bn0.044%+0.001 pp+0.044 pp+72.9%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.