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 Software6.56%+3.86 ppSemiconductors3.36%+1.68 ppApplication Software3.25%+1.49 ppTechnology Hardware, Storage & Peripherals2.12%+1.16 ppIT Consulting & Other Services1.48%+0.60 ppCommunications Equipment1.15%+0.35 ppElectronic Equipment & Instruments0.35%+0.20 ppSemiconductor Materials & Equipment0.30%+0.16 ppInternet Services & Infrastructure0.19%+0.09 ppTechnology Distributors0.09%+0.09 ppElectronic Manufacturing Services0.15%+0.06 ppElectronic Components0.12%+0.02 pp
3 · Sub-industry
Inside Semiconductors
Semiconductors · weight
3.36%
Industry change · 12M
+1.68 pp
Semiconductors · contribution
+1.679 pp
Company participation
50%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jan 2020 · 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 | $273.4bn | 1.349% | +0.067 pp | +0.640 pp | +39.1% | Yes |
| Qualcomm → QCOM | United States | $97.4bn | 0.481% | -0.029 pp | +0.283 pp | +78.6% | No |
| Texas Instruments → TXN | United States | $112.8bn | 0.556% | -0.019 pp | +0.237 pp | +23.1% | No |
| Advanced Micro Devices → AMD | United States | $52.3bn | 0.258% | +0.061 pp | +0.178 pp | +92.5% | Yes |
| Micron Technology → MU | United States | $59.0bn | 0.291% | +0.017 pp | +0.150 pp | +38.9% | Yes |
| Analog Devices → ADI | United States | $40.4bn | 0.199% | -0.006 pp | +0.079 pp | +13.3% | No |
| Skyworks Solutions → SWKS | United States | $19.3bn | 0.095% | +0.013 pp | +0.052 pp | +58.1% | Yes |
| Microchip Technology → MCHP | United States | $11.6bn | 0.057% | -0.001 pp | +0.026 pp | +23.3% | No |
| Broadcom → AVGO | United States | $12.1bn | 0.060% | -0.001 pp | +0.024 pp | +18.1% | No |
| Nvidia → NVDA | United States | $3.6bn | 0.018% | +0.002 pp | +0.011 pp | +65.1% | 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.