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 Software6.41%-2.09 ppApplication Software2.90%-1.33 ppSemiconductors2.86%-0.55 ppTechnology Hardware, Storage & Peripherals8.94%+0.38 ppSemiconductor Materials & Equipment0.35%-0.18 ppCommunications Equipment0.87%-0.11 ppIT Consulting & Other Services1.28%-0.07 ppElectronic Equipment & Instruments0.38%-0.06 ppElectronic Manufacturing Services0.14%-0.02 ppInternet Services & Infrastructure0.13%-0.01 ppElectronic Components0.14%-0.00 ppTechnology Distributors0.08%-0.00 pp
3 · Sub-industry
Inside Semiconductors
Semiconductors · weight
2.86%
Industry change · 12M
-0.55 pp
Semiconductors · contribution
-0.548 pp
Company participation
8%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Oct 2022 · 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 | $117.3bn | 0.416% | -0.096 pp | -0.249 pp | -40.1% | No |
| Advanced Micro Devices → AMD | United States | $97.0bn | 0.344% | -0.182 pp | -0.141 pp | -50.0% | No |
| ON Semiconductor → ON | United States | $26.6bn | 0.094% | -0.005 pp | +0.094 pp | +27.8% | Yes |
| Nvidia → NVDA | United States | $33.6bn | 0.119% | -0.037 pp | -0.094 pp | -47.2% | No |
| Texas Instruments → TXN | United States | $145.8bn | 0.517% | -0.044 pp | -0.061 pp | -11.9% | No |
| Microchip Technology → MCHP | United States | $34.1bn | 0.121% | -0.010 pp | +0.053 pp | -15.4% | No |
| Micron Technology → MU | United States | $58.8bn | 0.209% | -0.026 pp | -0.049 pp | -21.2% | No |
| Analog Devices → ADI | United States | $73.4bn | 0.260% | -0.047 pp | +0.047 pp | -16.3% | No |
| Skyworks Solutions → SWKS | United States | $13.8bn | 0.049% | -0.011 pp | -0.043 pp | -47.5% | No |
| NXP Semiconductors → NXPI | United States | $38.4bn | 0.136% | -0.030 pp | -0.042 pp | -26.0% | No |
| Qualcomm → QCOM | United States | $132.1bn | 0.469% | -0.091 pp | -0.032 pp | -9.9% | No |
| Monolithic Power Systems → MPWR | United States | $15.9bn | 0.056% | -0.018 pp | -0.024 pp | -35.0% | No |
| Broadcom → AVGO | United States | $19.0bn | 0.068% | -0.007 pp | -0.006 pp | -8.9% | No |
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.