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
Semiconductors15.99%+3.85 ppSystems Software8.13%+0.62 ppCommunications Equipment1.12%+0.32 ppSemiconductor Materials & Equipment0.84%+0.20 ppIT Consulting & Other Services0.98%-0.16 ppElectronic Components0.32%+0.13 ppTechnology Hardware, Storage & Peripherals8.25%-0.11 ppElectronic Equipment & Instruments0.23%-0.06 ppElectronic Manufacturing Services0.19%+0.05 ppApplication Software3.37%-0.05 ppInternet Services & Infrastructure0.10%-0.03 ppTechnology Distributors0.04%-0.02 pp
3 · Sub-industry
Inside Semiconductors
Semiconductors · weight
15.99%
Industry change · 12M
+3.85 pp
Semiconductors · contribution
+3.849 pp
Company participation
57%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Oct 2025 · 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 | $4920.5bn | 9.639% | +0.487 pp | +1.986 pp | +52.6% | Yes |
| Broadcom → AVGO | United States | $1745.5bn | 3.420% | +0.506 pp | +1.556 pp | +119.9% | Yes |
| Advanced Micro Devices → AMD | United States | $415.6bn | 0.814% | +0.211 pp | +0.265 pp | +77.8% | Yes |
| Micron Technology → MU | United States | $251.2bn | 0.492% | +0.234 pp | +0.232 pp | +125.5% | Yes |
| Texas Instruments → TXN | United States | $146.7bn | 0.287% | -0.060 pp | -0.148 pp | -17.9% | No |
| Intel → INTC | United States | $175.0bn | 0.343% | +0.160 pp | +0.127 pp | +85.8% | Yes |
| Qualcomm → QCOM | United States | $195.2bn | 0.382% | +0.048 pp | -0.044 pp | +13.6% | Yes |
| NXP Semiconductors → NXPI | United States | $52.6bn | 0.103% | -0.011 pp | -0.037 pp | -9.1% | No |
| Analog Devices → ADI | United States | $115.2bn | 0.226% | -0.009 pp | -0.035 pp | +6.7% | No |
| ON Semiconductor → ON | United States | $20.5bn | 0.040% | -0.010 pp | -0.030 pp | -29.0% | No |
| Microchip Technology → MCHP | United States | $33.7bn | 0.066% | -0.011 pp | -0.027 pp | -12.4% | No |
| Skyworks Solutions → SWKS | United States | $11.5bn | 0.023% | +0.001 pp | -0.010 pp | -7.8% | No |
| Monolithic Power Systems → MPWR | United States | $48.1bn | 0.094% | +0.022 pp | +0.007 pp | +33.5% | Yes |
| First Solar → FSLR | United States | $28.6bn | 0.056% | +0.017 pp | +0.007 pp | +37.3% | 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.