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
Data Center REITs · weight
0.33%
Industry change · 12M
-0.04 pp
Data Center REITs · contribution
-0.036 pp
Company participation
50%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

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

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Digital Realty →
DLR
United States$28.6bn0.098%-0.006 pp-0.038 pp-27.7%No
Equinix →
EQIX
United States$66.9bn0.228%+0.010 pp+0.002 pp-0.9%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.