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

Information Technology27.9%+27.90 ppHealth Care16.3%+16.24 ppIndustrials12.0%+11.94 ppConsumer Discretionary7.1%+7.11 ppConsumer Staples7.0%+6.96 ppCommunication Services4.3%+4.32 ppMaterials3.3%+3.25 ppReal Estate3.2%+3.20 ppUtilities3.1%+3.05 ppEnergy2.0%+2.04 ppFinancials13.9%-86.02 pp

2 · Industry

Inside Real Estate

Telecom Tower REITs0.86%+0.86 ppData Center REITs0.41%+0.41 ppIndustrial REITs0.33%+0.33 ppRetail REITs0.32%+0.32 ppMulti-Family Residential REITs0.30%+0.30 ppSelf-Storage REITs0.27%+0.27 ppHealth Care REITs0.26%+0.26 ppOffice REITs0.16%+0.16 ppReal Estate Services0.11%+0.11 ppTimber REITs0.09%+0.09 ppOther Specialized REITs0.05%+0.05 ppHotel & Resort REITs0.04%+0.04 ppSingle-Family Residential REITs0.00%+0.00 pp

3 · Sub-industry

Inside Office REITs

Office REITs0.16%+0.164 pp
Concentrated

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

View all contributions →
Office REITs · weight
0.16%
Industry change · 12M
+0.16 pp
Office REITs · contribution
+0.164 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Aug 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$31.4bn0.105%+0.011 pp+0.105 pp+25.7%Yes
BXP, Inc. →
BXP
United States$17.6bn0.059%-0.007 pp+0.059 pp+35.4%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.