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 Technology38.2%+3.54 ppFinancials11.8%+0.88 ppConsumer Discretionary12.1%+0.80 ppIndustrials9.7%-0.00 ppCommunication Services2.4%-0.05 ppUtilities2.7%-0.15 ppEnergy2.3%-0.17 ppMaterials2.1%-0.43 ppReal Estate2.2%-0.45 ppConsumer Staples6.2%-0.90 ppHealth Care10.4%-3.06 pp

2 · Industry

Inside Real Estate

Telecom Tower REITs0.31%-0.13 ppSelf-Storage REITs0.16%-0.08 ppIndustrial REITs0.21%-0.06 ppMulti-Family Residential REITs0.16%-0.05 ppHealth Care REITs0.33%+0.05 ppData Center REITs0.27%-0.05 ppRetail REITs0.29%-0.04 ppOffice REITs0.05%-0.03 ppTimber REITs0.04%-0.02 ppOther Specialized REITs0.06%-0.02 ppHotel & Resort REITs0.09%-0.02 ppSingle-Family Residential REITs0.04%-0.01 ppReal Estate Services0.17%+0.00 pp

3 · Sub-industry

Inside Office REITs

Office REITs0.05%-0.026 pp
Concentrated

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

View all contributions →
Office REITs · weight
0.05%
Industry change · 12M
-0.03 pp
Office REITs · contribution
-0.026 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Sep 2025 · 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$14.4bn0.029%+0.002 pp-0.020 pp-25.4%Yes
BXP, Inc. →
BXP
United States$11.8bn0.024%+0.001 pp-0.006 pp-2.7%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.