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
1 · Sector
Weight and 12M allocation change
2 · Industry
Inside Information Technology
Systems Software2.70%-1.57 ppSemiconductors1.69%-1.54 ppApplication Software1.76%-1.03 ppIT Consulting & Other Services0.88%-0.86 ppTechnology Hardware, Storage & Peripherals0.96%-0.73 ppCommunications Equipment0.80%-0.52 ppSemiconductor Materials & Equipment0.14%-0.21 ppElectronic Manufacturing Services0.09%-0.11 ppElectronic Components0.10%-0.08 ppInternet Services & Infrastructure0.10%-0.03 ppElectronic Equipment & Instruments0.14%-0.02 ppTechnology Distributors0.00%+0.00 pp
3 · Sub-industry
Inside Semiconductors
Semiconductors · weight
1.69%
Industry change · 12M
-1.54 pp
Semiconductors · contribution
-1.536 pp
Company participation
40%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jan 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 | $215.1bn | 0.709% | -0.016 pp | -0.576 pp | +0.3% | No |
| Qualcomm → QCOM | United States | $59.9bn | 0.198% | -0.116 pp | -0.379 pp | -24.6% | No |
| Texas Instruments → TXN | United States | $96.7bn | 0.319% | +0.013 pp | -0.298 pp | -5.6% | No |
| Micron Technology → MU | United States | $42.8bn | 0.141% | -0.004 pp | -0.147 pp | -12.6% | No |
| Analog Devices → ADI | United States | $36.6bn | 0.121% | +0.015 pp | -0.073 pp | +9.8% | Yes |
| Skyworks Solutions → SWKS | United States | $13.0bn | 0.043% | -0.010 pp | -0.059 pp | -23.7% | No |
| Broadcom → AVGO | United States | $10.9bn | 0.036% | +0.005 pp | +0.036 pp | +13.2% | Yes |
| Microchip Technology → MCHP | United States | $9.5bn | 0.031% | +0.005 pp | -0.032 pp | -14.1% | Yes |
| Nvidia → NVDA | United States | $2.2bn | 0.007% | -0.004 pp | -0.014 pp | -41.4% | No |
| Advanced Micro Devices → AMD | United States | $24.4bn | 0.080% | +0.019 pp | +0.005 pp | +77.7% | 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.