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 Technology28.3%+2.98 ppConsumer Discretionary12.3%+1.34 ppIndustrials9.9%+0.26 ppEnergy3.7%+0.18 ppMaterials2.9%-0.09 ppCommunication Services2.9%-0.40 ppReal Estate2.8%-0.49 ppUtilities2.8%-0.68 ppConsumer Staples7.1%-0.72 ppFinancials11.1%-0.86 ppHealth Care16.2%-1.52 pp

2 · Industry

Inside Real Estate

Telecom Tower REITs0.46%-0.30 ppMulti-Family Residential REITs0.24%-0.09 ppSelf-Storage REITs0.24%-0.05 ppIndustrial REITs0.35%+0.05 ppOffice REITs0.09%-0.05 ppRetail REITs0.32%-0.04 ppData Center REITs0.35%+0.03 ppHotel & Resort REITs0.14%-0.02 ppSingle-Family Residential REITs0.06%-0.02 ppReal Estate Services0.18%-0.01 ppTimber REITs0.07%-0.01 ppOther Specialized REITs0.06%+0.01 ppHealth Care REITs0.23%+0.00 pp

3 · Sub-industry

Inside Office REITs

Office REITs0.09%-0.047 pp
Concentrated

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

View all contributions →
Office REITs · weight
0.09%
Industry change · 12M
-0.05 pp
Office REITs · contribution
-0.047 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Sep 2023 · 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$17.3bn0.058%+0.012 pp-0.032 pp-25.5%Yes
BXP, Inc. →
BXP
United States$9.3bn0.031%+0.010 pp-0.015 pp-15.1%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.