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 Technology34.6%+14.94 ppFinancials12.3%+4.16 ppConsumer Discretionary12.0%+4.02 ppIndustrials10.1%+2.81 ppConsumer Staples7.3%+1.96 ppCommunication Services2.7%+0.87 ppHealth Care11.2%+0.85 ppUtilities2.9%+0.76 ppReal Estate2.4%+0.60 ppEnergy2.3%+0.18 ppMaterials2.3%-31.15 pp

2 · Industry

Inside Real Estate

Health Care REITs0.32%+0.14 ppData Center REITs0.33%+0.10 ppTelecom Tower REITs0.38%+0.08 ppRetail REITs0.30%+0.07 ppMulti-Family Residential REITs0.20%+0.05 ppSelf-Storage REITs0.20%+0.04 ppReal Estate Services0.15%+0.04 ppIndustrial REITs0.23%+0.03 ppOther Specialized REITs0.07%+0.02 ppHotel & Resort REITs0.10%+0.02 ppOffice REITs0.05%-0.01 ppSingle-Family Residential REITs0.05%+0.01 ppTimber REITs0.04%+0.00 pp

3 · Sub-industry

Inside Office REITs

Office REITs0.05%-0.006 pp
Concentrated

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

View all contributions →
Office REITs · weight
0.05%
Industry change · 12M
-0.01 pp
Office REITs · contribution
-0.006 pp
Company participation
0%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

May 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$12.1bn0.028%-0.012 pp-0.012 pp-38.0%No
BXP, Inc. →
BXP
United States$10.7bn0.024%-0.001 pp+0.006 pp+17.4%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.