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

Materials29.6%+26.36 pp Consumer Discretionary9.0%+2.52 pp Energy2.3%-1.14 pp Real Estate2.1%-1.36 pp Utilities2.2%-1.54 pp Communication Services2.1%-1.79 pp Industrials7.2%-2.86 pp Consumer Staples5.1%-3.17 pp Financials7.8%-4.56 pp Information Technology21.1%-5.55 pp Health Care11.5%-6.91 pp

2 · Industry

Inside Information Technology

Technology Hardware, Storage & Peripherals7.26%-1.70 pp Systems Software6.16%-1.46 pp Semiconductors2.62%-0.81 pp IT Consulting & Other Services0.88%-0.52 pp Application Software2.59%-0.50 pp Communications Equipment0.65%-0.24 pp Electronic Equipment & Instruments0.27%-0.12 pp Semiconductor Materials & Equipment0.36%-0.05 pp Electronic Components0.10%-0.04 pp Internet Services & Infrastructure0.09%-0.04 pp Electronic Manufacturing Services0.10%-0.04 pp Technology Distributors0.06%-0.03 pp

3 · Sub-industry

Inside Semiconductor Materials & Equipment

Semiconductor Materials & Equipment0.36%-0.049 pp

Concentrated

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

View all contributions →

Semiconductor Materials & Equipment · weight

0.36%

Industry change · 12M

-0.05 pp

Semiconductor Materials & Equipment · contribution

-0.049 pp

Company participation

of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Jun 2023 · 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	$121.4bn	0.281%	-0.073 pp	-0.027 pp	+60.5%	No
Teradyne → TER	United States	$17.3bn	0.040%	-0.017 pp	-0.016 pp	+24.9%	No
KLA Corporation → KLAC	United States	$6.7bn	0.015%	-0.003 pp	-0.003 pp	+54.1%	No
Lam Research → LRCX	United States	$8.6bn	0.020%	-0.004 pp	-0.003 pp	+53.0%	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.