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›Health Care›Biotechnology›Biotechnology

1 · Sector

Weight and 12M allocation change

Information Technology27.2%+9.30 pp Health Care16.9%+0.36 pp Materials3.2%-0.04 pp Consumer Discretionary6.8%-0.33 pp Communication Services4.9%-0.41 pp Utilities3.4%-0.47 pp Consumer Staples8.5%-0.55 pp Real Estate3.2%-0.60 pp Industrials11.8%-1.61 pp Energy1.6%-1.86 pp Financials12.5%-3.80 pp

2 · Industry

Inside Health Care

Life Sciences Tools & Services2.24%+0.50 pp Pharmaceuticals5.03%-0.32 pp Managed Health Care2.11%+0.18 pp Health Care Supplies0.27%+0.15 pp Health Care Services0.84%-0.15 pp Health Care Equipment3.48%+0.12 pp Biotechnology2.43%-0.06 pp Health Care Facilities0.20%-0.04 pp Health Care Distributors0.31%-0.03 pp Health Care Technology0.00%+0.00 pp

3 · Sub-industry

Inside Biotechnology

Biotechnology2.43%-0.055 pp

Concentrated

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

View all contributions →

Biotechnology · weight

2.43%

Industry change · 12M

-0.06 pp

Biotechnology · contribution

-0.055 pp

Company participation

100%

of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Oct 2020 · sorted by absolute contribution to 12-month change

Company	Country	Market cap	Universe weight	3M contribution	12M contribution	12M price return	Above 6M weight average
AbbVie → ABBV	United States	$150.2bn	0.711%	+0.710 pp	+0.098 pp	+12.9%	Yes
Biogen → BIIB	United States	$38.8bn	0.184%	+0.183 pp	-0.097 pp	-15.6%	Yes
Regeneron Pharmaceuticals → REGN	United States	$51.1bn	0.242%	+0.242 pp	+0.092 pp	+77.5%	Yes
Gilead Sciences → GILD	United States	$72.9bn	0.345%	+0.345 pp	-0.075 pp	-5.2%	Yes
Amgen → AMGN	United States	$126.3bn	0.598%	+0.597 pp	-0.062 pp	+4.5%	Yes
Vertex Pharmaceuticals → VRTX	United States	$54.2bn	0.257%	+0.256 pp	-0.005 pp	+6.6%	Yes
Incyte → INCY	United States	$18.9bn	0.090%	+0.090 pp	-0.005 pp	+3.2%	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.