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 Software7.77%+2.09 ppCommunications Equipment1.20%-0.37 ppTechnology Hardware, Storage & Peripherals2.18%+0.33 ppSemiconductors3.62%+0.26 ppApplication Software3.58%+0.24 ppIT Consulting & Other Services1.49%-0.13 ppTechnology Distributors0.09%+0.09 ppElectronic Equipment & Instruments0.37%+0.07 ppElectronic Components0.11%-0.05 ppElectronic Manufacturing Services0.14%-0.04 ppSemiconductor Materials & Equipment0.29%+0.03 ppInternet Services & Infrastructure0.22%+0.02 pp
3 · Sub-industry
Inside Semiconductors
Semiconductors · weight
3.62%
Industry change · 12M
+0.26 pp
Semiconductors · contribution
+0.264 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Apr 2020 · 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 |
|---|---|---|---|---|---|---|---|
| Advanced Micro Devices → AMD | United States | $61.4bn | 0.343% | +0.085 pp | +0.189 pp | +89.6% | Yes |
| Intel → INTC | United States | $254.0bn | 1.421% | +0.072 pp | +0.148 pp | +20.3% | Yes |
| Qualcomm → QCOM | United States | $88.5bn | 0.495% | +0.015 pp | -0.086 pp | -5.6% | Yes |
| Micron Technology → MU | United States | $53.3bn | 0.298% | +0.007 pp | +0.039 pp | +13.9% | Yes |
| Texas Instruments → TXN | United States | $106.5bn | 0.596% | +0.040 pp | -0.020 pp | +1.2% | Yes |
| Skyworks Solutions → SWKS | United States | $17.7bn | 0.099% | +0.004 pp | +0.013 pp | +20.2% | Yes |
| Analog Devices → ADI | United States | $40.4bn | 0.226% | +0.026 pp | -0.013 pp | -3.7% | Yes |
| Nvidia → NVDA | United States | $4.5bn | 0.025% | +0.007 pp | +0.010 pp | +62.0% | Yes |
| Broadcom → AVGO | United States | $10.9bn | 0.061% | +0.001 pp | -0.009 pp | -10.7% | Yes |
| Microchip Technology → MCHP | United States | $10.5bn | 0.059% | +0.001 pp | -0.007 pp | -10.8% | 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.