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 Technology18.4%+8.88 ppFinancials16.5%+7.33 ppHealth Care17.0%+6.61 ppIndustrials13.2%+6.00 ppConsumer Staples8.7%+3.60 ppCommunication Services5.3%+3.24 ppMaterials3.2%+1.83 ppUtilities3.7%+1.55 ppReal Estate3.5%+1.53 ppEnergy3.5%+1.16 ppConsumer Discretionary7.0%-41.73 pp

2 · Industry

Inside Real Estate

Telecom Tower REITs0.92%+0.45 ppData Center REITs0.37%+0.19 ppMulti-Family Residential REITs0.39%+0.16 ppIndustrial REITs0.28%+0.14 ppRetail REITs0.46%+0.14 ppHealth Care REITs0.35%+0.14 ppOffice REITs0.20%+0.09 ppSelf-Storage REITs0.25%+0.08 ppReal Estate Services0.10%+0.05 ppTimber REITs0.11%+0.05 ppHotel & Resort REITs0.07%+0.02 ppOther Specialized REITs0.04%+0.01 ppSingle-Family Residential REITs0.00%+0.00 pp

3 · Sub-industry

Inside Other Specialized REITs

Other Specialized REITs0.04%+0.012 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
+0.01 pp
Other Specialized REITs · contribution
+0.012 pp
Company participation
0%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

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

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Iron Mountain →
IRM
United States$9.2bn0.045%-0.004 pp+0.012 pp+5.9%No

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.