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 Technology29.0%+4.54 ppConsumer Discretionary12.1%+0.51 ppIndustrials9.9%+0.06 ppMaterials2.9%-0.07 ppReal Estate2.8%-0.34 ppCommunication Services2.9%-0.37 ppUtilities2.9%-0.44 ppEnergy3.6%-0.51 ppConsumer Staples7.1%-0.55 ppFinancials11.0%-1.14 ppHealth Care15.8%-1.70 pp

2 · Industry

Inside Real Estate

Telecom Tower REITs0.50%-0.15 ppData Center REITs0.36%+0.08 ppSelf-Storage REITs0.22%-0.06 ppMulti-Family Residential REITs0.23%-0.06 ppIndustrial REITs0.32%-0.05 ppOffice REITs0.08%-0.04 ppRetail REITs0.32%-0.04 ppHealth Care REITs0.24%+0.04 ppReal Estate Services0.17%-0.03 ppHotel & Resort REITs0.14%-0.02 ppTimber REITs0.07%-0.01 ppSingle-Family Residential REITs0.06%-0.01 ppOther Specialized REITs0.06%+0.01 pp

3 · Sub-industry

Inside Office REITs

Office REITs0.08%-0.041 pp
Concentrated

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

View all contributions →
Office REITs · weight
0.08%
Industry change · 12M
-0.04 pp
Office REITs · contribution
-0.041 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Oct 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$16.2bn0.055%+0.008 pp-0.030 pp-33.2%Yes
BXP, Inc. →
BXP
United States$8.4bn0.029%+0.006 pp-0.012 pp-21.2%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.