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 Software8.26%+1.30 ppSemiconductors3.90%+0.48 ppTechnology Hardware, Storage & Peripherals9.72%+0.23 ppSemiconductor Materials & Equipment0.59%+0.14 ppCommunications Equipment1.06%+0.13 ppIT Consulting & Other Services1.47%+0.12 ppApplication Software3.73%+0.10 ppElectronic Equipment & Instruments0.45%+0.03 ppInternet Services & Infrastructure0.15%-0.02 ppTechnology Distributors0.09%+0.01 ppElectronic Components0.14%+0.01 ppElectronic Manufacturing Services0.17%+0.01 pp
3 · Sub-industry
Inside Semiconductors
Semiconductors · weight
3.90%
Industry change · 12M
+0.48 pp
Semiconductors · contribution
+0.478 pp
Company participation
67%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Dec 2021 · 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 |
|---|---|---|---|---|---|---|---|
| Nvidia → NVDA | United States | $73.5bn | 0.236% | +0.054 pp | +0.203 pp | +125.5% | Yes |
| NXP Semiconductors → NXPI | United States | $60.6bn | 0.194% | +0.012 pp | +0.194 pp | +44.8% | Yes |
| Intel → INTC | United States | $209.5bn | 0.671% | -0.088 pp | -0.155 pp | +6.1% | No |
| Advanced Micro Devices → AMD | United States | $173.8bn | 0.557% | +0.118 pp | +0.110 pp | +56.9% | Yes |
| Microchip Technology → MCHP | United States | $48.3bn | 0.155% | +0.081 pp | +0.082 pp | +27.5% | Yes |
| Analog Devices → ADI | United States | $92.3bn | 0.296% | +0.079 pp | +0.075 pp | +21.0% | Yes |
| Monolithic Power Systems → MPWR | United States | $22.7bn | 0.073% | -0.005 pp | +0.073 pp | +35.5% | No |
| Texas Instruments → TXN | United States | $174.1bn | 0.558% | -0.065 pp | -0.052 pp | +17.5% | No |
| Qualcomm → QCOM | United States | $204.8bn | 0.656% | +0.145 pp | -0.041 pp | +22.3% | Yes |
| Skyworks Solutions → SWKS | United States | $25.7bn | 0.082% | -0.013 pp | -0.021 pp | +2.7% | No |
| Broadcom → AVGO | United States | $27.5bn | 0.088% | +0.018 pp | +0.016 pp | +56.5% | Yes |
| Micron Technology → MU | United States | $104.2bn | 0.334% | +0.053 pp | -0.005 pp | +24.2% | 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.