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›Semiconductors›Semiconductors

1 · Sector

Weight and 12M allocation change

Consumer Discretionary48.1%+41.00 pp Materials1.1%-1.04 pp Utilities1.9%-1.28 pp Real Estate1.8%-1.40 pp Communication Services1.9%-1.53 pp Energy2.7%-2.04 pp Consumer Staples4.8%-4.56 pp Information Technology10.0%-6.01 pp Health Care10.1%-6.67 pp Industrials8.1%-7.53 pp Financials9.5%-8.94 pp

2 · Industry

Inside Information Technology

Systems Software2.84%-1.43 pp Semiconductors1.86%-1.36 pp Application Software1.81%-0.98 pp IT Consulting & Other Services0.95%-0.79 pp Communications Equipment0.82%-0.50 pp Technology Hardware, Storage & Peripherals1.23%-0.46 pp Semiconductor Materials & Equipment0.13%-0.22 pp Electronic Manufacturing Services0.10%-0.11 pp Electronic Components0.10%-0.07 pp Electronic Equipment & Instruments0.10%-0.07 pp Internet Services & Infrastructure0.10%-0.03 pp Technology Distributors0.00%+0.00 pp

3 · Sub-industry

Inside Semiconductors

Semiconductors1.86%-1.357 pp

Concentrated

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

View all contributions →

Semiconductors · weight

1.86%

Industry change · 12M

-1.36 pp

Semiconductors · contribution

-1.357 pp

Company participation

20%

of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Sep 2018 · 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
Intel → INTC	United States	$218.1bn	0.695%	-0.711 pp	-0.590 pp	+0.1%	No
Texas Instruments → TXN	United States	$104.3bn	0.332%	-0.322 pp	-0.284 pp	-1.0%	No
Qualcomm → QCOM	United States	$105.8bn	0.337%	-0.168 pp	-0.239 pp	+8.5%	No
Micron Technology → MU	United States	$52.5bn	0.167%	-0.202 pp	-0.121 pp	+3.5%	No
Analog Devices → ADI	United States	$34.4bn	0.109%	-0.106 pp	-0.084 pp	+2.1%	No
Skyworks Solutions → SWKS	United States	$16.2bn	0.052%	-0.055 pp	-0.050 pp	-5.7%	No
Microchip Technology → MCHP	United States	$9.3bn	0.030%	-0.035 pp	-0.034 pp	-16.1%	No
Broadcom → AVGO	United States	$10.2bn	0.033%	-0.031 pp	+0.033 pp	+3.1%	Yes
Advanced Micro Devices → AMD	United States	$30.1bn	0.096%	+0.008 pp	+0.020 pp	+124.8%	Yes
Nvidia → NVDA	United States	$4.3bn	0.014%	-0.008 pp	-0.008 pp	+14.5%	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.