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 Technology18.1%+8.41 ppFinancials16.5%+6.93 ppHealth Care16.8%+6.27 ppIndustrials13.7%+6.24 ppConsumer Staples8.8%+3.60 ppCommunication Services5.3%+3.22 ppMaterials3.2%+1.80 ppUtilities3.7%+1.59 ppReal Estate3.6%+1.58 ppEnergy3.4%+1.00 ppConsumer Discretionary7.0%-40.65 pp

2 · Industry

Inside Real Estate

Telecom Tower REITs0.89%+0.43 ppMulti-Family Residential REITs0.41%+0.19 ppData Center REITs0.37%+0.19 ppRetail REITs0.49%+0.16 ppHealth Care REITs0.37%+0.16 ppIndustrial REITs0.29%+0.15 ppSelf-Storage REITs0.25%+0.09 ppOffice REITs0.20%+0.09 ppReal Estate Services0.10%+0.05 ppTimber REITs0.11%+0.05 ppHotel & Resort REITs0.06%+0.02 ppOther Specialized REITs0.05%+0.01 ppSingle-Family Residential REITs0.00%+0.00 pp

3 · Sub-industry

Inside Office REITs

Office REITs0.20%+0.090 pp
Concentrated

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

View all contributions →
Office REITs · weight
0.20%
Industry change · 12M
+0.09 pp
Office REITs · contribution
+0.090 pp
Company participation
50%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Nov 2019 · 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$18.7bn0.094%+0.002 pp+0.050 pp+34.4%Yes
BXP, Inc. →
BXP
United States$21.4bn0.108%-0.000 pp+0.041 pp+8.8%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.