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

Consumer Discretionary48.2%+41.13 ppMaterials1.1%-1.05 ppUtilities2.0%-1.12 ppReal Estate2.0%-1.28 ppCommunication Services2.0%-1.49 ppEnergy2.5%-2.22 ppConsumer Staples5.2%-4.15 ppInformation Technology9.8%-6.27 ppHealth Care10.0%-6.71 ppIndustrials7.6%-7.94 ppFinancials9.6%-8.89 pp

2 · Industry

Inside Real Estate

Telecom Tower REITs0.45%-0.29 ppRetail REITs0.32%-0.17 ppData Center REITs0.17%-0.16 ppMulti-Family Residential REITs0.21%-0.12 ppHealth Care REITs0.20%-0.11 ppSelf-Storage REITs0.16%-0.09 ppTimber REITs0.07%-0.09 ppOffice REITs0.11%-0.08 ppIndustrial REITs0.14%-0.06 ppReal Estate Services0.05%-0.04 ppHotel & Resort REITs0.05%-0.04 ppOther Specialized REITs0.03%-0.02 ppSingle-Family Residential REITs0.00%+0.00 pp

3 · Sub-industry

Inside Office REITs

Office REITs0.11%-0.076 pp
Concentrated

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

View all contributions →
Office REITs · weight
0.11%
Industry change · 12M
-0.08 pp
Office REITs · contribution
-0.076 pp
Company participation
0%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Oct 2018 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
BXP, Inc. →
BXP
United States$18.6bn0.063%-0.050 pp-0.046 pp-0.3%No
Alexandria Real Estate Equities →
ARE
United States$13.1bn0.045%-0.034 pp-0.030 pp-3.6%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.