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%+26.14 pp Consumer Discretionary8.5%+1.82 pp Real Estate2.1%-1.21 pp Utilities2.3%-1.33 pp Energy2.3%-1.64 pp Communication Services2.1%-1.72 pp Consumer Staples5.3%-2.38 pp Industrials6.9%-3.12 pp Financials7.8%-5.05 pp Health Care11.8%-5.74 pp Information Technology21.2%-5.77 pp

2 · Industry

Inside Information Technology

Technology Hardware, Storage & Peripherals7.09%-1.98 pp Systems Software6.25%-1.23 pp Semiconductors2.67%-1.07 pp IT Consulting & Other Services0.92%-0.44 pp Application Software2.61%-0.43 pp Communications Equipment0.67%-0.20 pp Electronic Equipment & Instruments0.27%-0.13 pp Semiconductor Materials & Equipment0.35%-0.13 pp Electronic Manufacturing Services0.10%-0.05 pp Electronic Components0.09%-0.05 pp Internet Services & Infrastructure0.09%-0.04 pp Technology Distributors0.06%-0.03 pp

3 · Sub-industry

Inside Semiconductor Materials & Equipment

Semiconductor Materials & Equipment0.35%-0.126 pp

Concentrated

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

View all contributions →

Semiconductor Materials & Equipment · weight

0.35%

Industry change · 12M

-0.13 pp

Semiconductor Materials & Equipment · contribution

-0.126 pp

Company participation

of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

May 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	$111.9bn	0.277%	-0.069 pp	-0.091 pp	+14.8%	No
Teradyne → TER	United States	$15.5bn	0.038%	-0.017 pp	-0.025 pp	-7.9%	No
Lam Research → LRCX	United States	$8.3bn	0.020%	-0.003 pp	-0.006 pp	+20.3%	No
KLA Corporation → KLAC	United States	$6.1bn	0.015%	-0.003 pp	-0.005 pp	+23.1%	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.