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 Software8.94%+2.53 ppApplication Software3.75%+0.86 ppSemiconductors3.44%+0.58 ppTechnology Hardware, Storage & Peripherals9.37%+0.43 ppSemiconductor Materials & Equipment0.47%+0.12 ppCommunications Equipment0.96%+0.09 ppElectronic Equipment & Instruments0.35%-0.04 ppElectronic Components0.12%-0.02 ppElectronic Manufacturing Services0.13%-0.01 ppTechnology Distributors0.09%+0.01 ppIT Consulting & Other Services1.29%+0.01 ppInternet Services & Infrastructure0.12%-0.00 pp
3 · Sub-industry
Inside Semiconductors
Semiconductors · weight
3.44%
Industry change · 12M
+0.58 pp
Semiconductors · contribution
+0.579 pp
Company participation
86%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Oct 2023 · 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 | $100.7bn | 0.342% | +0.091 pp | +0.223 pp | +202.3% | Yes |
| Advanced Micro Devices → AMD | United States | $159.1bn | 0.541% | +0.139 pp | +0.197 pp | +64.0% | Yes |
| Intel → INTC | United States | $153.9bn | 0.523% | +0.197 pp | +0.107 pp | +32.7% | Yes |
| Texas Instruments → TXN | United States | $129.0bn | 0.438% | +0.082 pp | -0.079 pp | -8.8% | Yes |
| Qualcomm → QCOM | United States | $121.6bn | 0.414% | +0.093 pp | -0.055 pp | -4.9% | Yes |
| First Solar → FSLR | United States | $15.2bn | 0.052% | +0.003 pp | +0.052 pp | -2.1% | No |
| Broadcom → AVGO | United States | $34.7bn | 0.118% | +0.037 pp | +0.050 pp | +83.7% | Yes |
| Micron Technology → MU | United States | $73.4bn | 0.250% | +0.079 pp | +0.041 pp | +24.6% | Yes |
| Monolithic Power Systems → MPWR | United States | $21.1bn | 0.072% | +0.014 pp | +0.015 pp | +31.2% | Yes |
| NXP Semiconductors → NXPI | United States | $44.5bn | 0.151% | +0.026 pp | +0.015 pp | +20.5% | Yes |
| Microchip Technology → MCHP | United States | $38.8bn | 0.132% | +0.020 pp | +0.011 pp | +17.7% | Yes |
| Analog Devices → ADI | United States | $78.4bn | 0.267% | +0.048 pp | +0.006 pp | +12.4% | Yes |
| ON Semiconductor → ON | United States | $27.0bn | 0.092% | -0.010 pp | -0.003 pp | +2.0% | No |
| Skyworks Solutions → SWKS | United States | $13.8bn | 0.047% | +0.007 pp | -0.002 pp | +3.4% | 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.