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 Software5.60%+0.92 ppSemiconductors2.97%-0.68 ppTechnology Hardware, Storage & Peripherals1.64%-0.44 ppIT Consulting & Other Services1.57%-0.12 ppApplication Software3.24%+0.12 ppElectronic Equipment & Instruments0.29%+0.12 ppCommunications Equipment1.49%+0.11 ppSemiconductor Materials & Equipment0.24%-0.11 ppInternet Services & Infrastructure0.21%+0.05 ppElectronic Manufacturing Services0.17%-0.03 ppElectronic Components0.15%-0.01 ppTechnology Distributors0.00%+0.00 pp
3 · Sub-industry
Inside Semiconductors
Semiconductors · weight
2.97%
Industry change · 12M
-0.68 pp
Semiconductors · contribution
-0.680 pp
Company participation
80%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
May 2019 · 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 | $197.2bn | 1.148% | -0.232 pp | -0.413 pp | -18.2% | Yes |
| Micron Technology → MU | United States | $36.1bn | 0.210% | -0.055 pp | -0.195 pp | -43.4% | No |
| Texas Instruments → TXN | United States | $97.9bn | 0.570% | -0.005 pp | -0.095 pp | -4.1% | Yes |
| Advanced Micro Devices → AMD | United States | $29.6bn | 0.173% | +0.036 pp | +0.092 pp | +99.6% | Yes |
| Broadcom → AVGO | United States | $10.0bn | 0.058% | -0.007 pp | +0.058 pp | +3.9% | Yes |
| Qualcomm → QCOM | United States | $81.2bn | 0.473% | +0.099 pp | -0.050 pp | +18.6% | Yes |
| Skyworks Solutions → SWKS | United States | $11.5bn | 0.067% | -0.015 pp | -0.042 pp | -31.1% | No |
| Microchip Technology → MCHP | United States | $9.5bn | 0.055% | -0.004 pp | -0.014 pp | -16.3% | Yes |
| Nvidia → NVDA | United States | $2.1bn | 0.012% | -0.002 pp | -0.011 pp | -46.1% | Yes |
| Analog Devices → ADI | United States | $35.7bn | 0.208% | -0.020 pp | -0.011 pp | +2.0% | 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.