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›Office REITs›Office REITs
Office REITs · weight
0.10%
Industry change · 12M
-0.07 pp
Office REITs · contribution
-0.073 pp
Company participation
0%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

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

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
BXP, Inc. →
BXP
United States$8.4bn0.028%-0.012 pp-0.038 pp-52.0%No
Alexandria Real Estate Equities →
ARE
United States$21.5bn0.073%-0.023 pp-0.035 pp-29.4%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.