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

Consumer Discretionary11.3%+4.18 pp Energy3.7%+0.58 pp Industrials10.3%+0.07 pp Utilities3.2%+0.05 pp Materials3.2%+0.02 pp Real Estate3.2%+0.00 pp Health Care16.6%-0.02 pp Consumer Staples7.5%-0.07 pp Communication Services3.3%-0.59 pp Financials12.6%-0.72 pp Information Technology25.1%-3.51 pp

2 · Industry

Inside Information Technology

Technology Hardware, Storage & Peripherals8.50%-1.23 pp Systems Software6.80%-1.15 pp Semiconductors3.32%-0.48 pp Application Software3.00%-0.30 pp IT Consulting & Other Services1.21%-0.11 pp Communications Equipment0.92%-0.09 pp Semiconductor Materials & Equipment0.44%-0.08 pp Internet Services & Infrastructure0.11%-0.03 pp Electronic Equipment & Instruments0.39%-0.02 pp Electronic Manufacturing Services0.14%-0.02 pp Electronic Components0.14%-0.02 pp Technology Distributors0.10%+0.02 pp

3 · Sub-industry

Inside Semiconductor Materials & Equipment

Semiconductor Materials & Equipment0.44%-0.081 pp

Concentrated

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

View all contributions →

Semiconductor Materials & Equipment · weight

0.44%

Industry change · 12M

-0.08 pp

Semiconductor Materials & Equipment · contribution

-0.081 pp

Company participation

100%

of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Feb 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	$98.2bn	0.345%	+0.025 pp	-0.066 pp	-12.6%	Yes
Teradyne → TER	United States	$15.8bn	0.055%	+0.006 pp	-0.011 pp	-13.8%	Yes
Lam Research → LRCX	United States	$6.6bn	0.023%	+0.001 pp	-0.004 pp	-12.2%	Yes
KLA Corporation → KLAC	United States	$5.3bn	0.018%	-0.000 pp	+0.000 pp	+10.3%	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.