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
0.08%
Industry change · 12M
-0.01 pp
Office REITs · contribution
-0.011 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Sep 2024 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Alexandria Real Estate Equities →
ARE
United States$20.8bn0.048%+0.010 pp-0.009 pp+23.7%Yes
BXP, Inc. →
BXP
United States$12.7bn0.030%+0.011 pp-0.002 pp+43.4%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.