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

1 · Sector

Weight and 12M allocation change

Financials14.2%+1.72 ppInformation Technology28.5%+1.35 ppConsumer Discretionary7.8%+0.98 ppEnergy2.5%+0.82 ppMaterials3.2%+0.05 ppReal Estate3.2%+0.01 ppHealth Care16.5%-0.40 ppUtilities3.0%-0.41 ppCommunication Services3.9%-1.00 ppConsumer Staples7.0%-1.51 ppIndustrials10.2%-1.61 pp

2 · Industry

Inside Real Estate

Telecom Tower REITs0.82%-0.14 ppData Center REITs0.40%-0.09 ppRetail REITs0.33%+0.08 ppMulti-Family Residential REITs0.32%+0.07 ppReal Estate Services0.12%+0.04 ppSelf-Storage REITs0.28%+0.02 ppOffice REITs0.16%+0.01 ppIndustrial REITs0.36%+0.01 ppOther Specialized REITs0.04%+0.01 ppTimber REITs0.09%-0.01 ppHotel & Resort REITs0.04%+0.01 ppHealth Care REITs0.25%+0.00 ppSingle-Family Residential REITs0.00%+0.00 pp

3 · Sub-industry

Inside Office REITs

Office REITs0.16%+0.015 pp
Concentrated

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

View all contributions →
Office REITs · weight
0.16%
Industry change · 12M
+0.01 pp
Office REITs · contribution
+0.015 pp
Company participation
50%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Oct 2021 · 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$31.6bn0.106%+0.000 pp+0.009 pp+38.1%Yes
BXP, Inc. →
BXP
United States$17.7bn0.059%-0.004 pp+0.006 pp+62.9%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.