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
Semiconductors3.65%+0.43 ppSystems Software4.69%+0.42 ppTechnology Hardware, Storage & Peripherals2.08%+0.39 ppApplication Software3.12%+0.33 ppCommunications Equipment1.39%+0.07 ppIT Consulting & Other Services1.70%-0.05 ppInternet Services & Infrastructure0.15%+0.03 ppElectronic Components0.16%-0.02 ppSemiconductor Materials & Equipment0.34%-0.01 ppElectronic Equipment & Instruments0.17%+0.01 ppElectronic Manufacturing Services0.20%-0.01 ppTechnology Distributors0.00%+0.00 pp
3 · Sub-industry
Inside Semiconductors
Semiconductors · weight
3.65%
Industry change · 12M
+0.43 pp
Semiconductors · contribution
+0.433 pp
Company participation
89%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
May 2018 · 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 | $257.2bn | 1.561% | +0.182 pp | +0.276 pp | +16.1% | Yes |
| Micron Technology → MU | United States | $66.8bn | 0.405% | +0.067 pp | +0.117 pp | +31.7% | Yes |
| Qualcomm → QCOM | United States | $86.2bn | 0.523% | -0.054 pp | -0.053 pp | -13.2% | No |
| Texas Instruments → TXN | United States | $109.6bn | 0.665% | +0.026 pp | +0.048 pp | +2.7% | Yes |
| Analog Devices → ADI | United States | $36.0bn | 0.219% | +0.019 pp | +0.026 pp | +6.3% | Yes |
| Skyworks Solutions → SWKS | United States | $18.0bn | 0.109% | -0.011 pp | +0.007 pp | +2.1% | Yes |
| Microchip Technology → MCHP | United States | $11.4bn | 0.069% | +0.007 pp | +0.006 pp | +3.1% | Yes |
| Advanced Micro Devices → AMD | United States | $13.3bn | 0.081% | +0.010 pp | +0.005 pp | -0.1% | Yes |
| Nvidia → NVDA | United States | $3.8bn | 0.023% | +0.001 pp | +0.002 pp | +2.7% | 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.