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›Data Center REITs›Data Center REITs

1 · Sector

Weight and 12M allocation change

Information Technology17.1%+1.04 ppUtilities3.4%+0.20 ppReal Estate3.4%+0.14 ppMaterials2.1%-0.03 ppConsumer Discretionary7.0%-0.06 ppEnergy4.6%-0.08 ppCommunication Services3.4%-0.08 ppHealth Care16.6%-0.13 ppConsumer Staples9.1%-0.27 ppFinancials18.1%-0.33 ppIndustrials15.2%-0.39 pp

2 · Industry

Inside Real Estate

Telecom Tower REITs0.79%+0.05 ppSelf-Storage REITs0.28%+0.03 ppMulti-Family Residential REITs0.36%+0.02 ppRetail REITs0.51%+0.01 ppOffice REITs0.19%+0.01 ppReal Estate Services0.10%+0.01 ppIndustrial REITs0.21%+0.01 ppHealth Care REITs0.30%-0.01 ppOther Specialized REITs0.06%+0.00 ppHotel & Resort REITs0.08%-0.00 ppData Center REITs0.34%+0.00 ppTimber REITs0.16%+0.00 ppSingle-Family Residential REITs0.00%+0.00 pp

3 · Sub-industry

Inside Data Center REITs

Data Center REITs0.34%+0.002 pp
Concentrated

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

View all contributions →
Data Center REITs · weight
0.34%
Industry change · 12M
+0.00 pp
Data Center REITs · contribution
+0.002 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

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

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Digital Realty →
DLR
United States$21.7bn0.133%+0.002 pp+0.002 pp-5.0%Yes
Equinix →
EQIX
United States$33.1bn0.203%+0.000 pp+0.000 pp-7.6%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.