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

Information Technology18.4%+8.88 pp Financials16.5%+7.33 pp Health Care17.0%+6.61 pp Industrials13.2%+6.00 pp Consumer Staples8.7%+3.60 pp Communication Services5.3%+3.24 pp Materials3.2%+1.83 pp Utilities3.7%+1.55 pp Real Estate3.5%+1.53 pp Energy3.5%+1.16 pp Consumer Discretionary7.0%-41.73 pp

2 · Industry

Inside Information Technology

Systems Software6.05%+3.21 pp Semiconductors3.36%+1.60 pp Application Software3.06%+1.33 pp Technology Hardware, Storage & Peripherals2.06%+1.09 pp IT Consulting & Other Services1.45%+0.60 pp Communications Equipment1.18%+0.38 pp Electronic Equipment & Instruments0.34%+0.20 pp Semiconductor Materials & Equipment0.31%+0.18 pp Technology Distributors0.10%+0.10 pp Internet Services & Infrastructure0.18%+0.08 pp Electronic Manufacturing Services0.16%+0.06 pp Electronic Components0.13%+0.03 pp

3 · Sub-industry

Inside Semiconductors

Semiconductors3.36%+1.599 pp

Broad

The gain is shared across much of the industry.

View all contributions →

Semiconductors · weight

3.36%

Industry change · 12M

+1.60 pp

Semiconductors · contribution

+1.599 pp

Company participation

80%

of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Dec 2019 · 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	$260.3bn	1.277%	+0.065 pp	+0.512 pp	+30.7%	Yes
Texas Instruments → TXN	United States	$119.9bn	0.588%	-0.053 pp	+0.264 pp	+39.6%	No
Qualcomm → QCOM	United States	$100.7bn	0.494%	+0.002 pp	+0.248 pp	+60.8%	Yes
Advanced Micro Devices → AMD	United States	$51.1bn	0.251%	+0.083 pp	+0.185 pp	+148.4%	Yes
Micron Technology → MU	United States	$59.7bn	0.293%	+0.042 pp	+0.166 pp	+69.5%	Yes
Analog Devices → ADI	United States	$43.8bn	0.215%	-0.004 pp	+0.101 pp	+41.3%	No
Skyworks Solutions → SWKS	United States	$20.6bn	0.101%	+0.029 pp	+0.059 pp	+84.1%	Yes
Microchip Technology → MCHP	United States	$12.5bn	0.061%	+0.003 pp	+0.031 pp	+48.0%	Yes
Broadcom → AVGO	United States	$12.6bn	0.062%	+0.004 pp	+0.025 pp	+29.1%	Yes
Nvidia → NVDA	United States	$3.6bn	0.018%	+0.004 pp	+0.010 pp	+76.9%	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.