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›Information Technology›Semiconductor Materials & Equipment›Semiconductor Materials & Equipment

1 · Sector

Weight and 12M allocation change

Health Care17.6%+1.90 pp Energy4.0%+1.62 pp Information Technology26.9%+1.35 pp Utilities3.6%+0.53 pp Consumer Staples7.7%+0.52 pp Real Estate3.4%+0.27 pp Materials3.5%-0.04 pp Consumer Discretionary6.7%-0.71 pp Communication Services3.8%-0.73 pp Financials12.8%-1.90 pp Industrials10.0%-2.80 pp

2 · Industry

Inside Information Technology

Technology Hardware, Storage & Peripherals9.07%+1.21 pp Systems Software7.47%+0.59 pp Application Software3.05%-0.52 pp Semiconductors3.74%+0.29 pp Semiconductor Materials & Equipment0.48%-0.11 pp Communications Equipment0.87%-0.10 pp IT Consulting & Other Services1.35%+0.06 pp Internet Services & Infrastructure0.13%-0.03 pp Electronic Components0.15%-0.02 pp Electronic Equipment & Instruments0.40%-0.02 pp Electronic Manufacturing Services0.15%-0.01 pp Technology Distributors0.08%-0.00 pp

3 · Sub-industry

Inside Semiconductor Materials & Equipment

Semiconductor Materials & Equipment0.48%-0.106 pp

Concentrated

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

View all contributions →

Semiconductor Materials & Equipment · weight

0.48%

Industry change · 12M

-0.11 pp

Semiconductor Materials & Equipment · contribution

-0.106 pp

Company participation

25%

of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

May 2022 · 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
Applied Materials → AMAT	United States	$102.0bn	0.367%	-0.044 pp	-0.085 pp	-14.4%	No
Teradyne → TER	United States	$17.5bn	0.063%	-0.003 pp	-0.016 pp	-17.2%	No
Lam Research → LRCX	United States	$7.2bn	0.026%	-0.001 pp	-0.007 pp	-19.2%	No
KLA Corporation → KLAC	United States	$5.4bn	0.020%	+0.001 pp	+0.002 pp	+16.5%	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.