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 Software5.82%+3.00 ppApplication Software3.24%+1.44 ppSemiconductors3.16%+1.24 ppIT Consulting & Other Services1.56%+0.61 ppTechnology Hardware, Storage & Peripherals1.73%+0.47 ppCommunications Equipment1.30%+0.47 ppElectronic Equipment & Instruments0.31%+0.21 ppSemiconductor Materials & Equipment0.27%+0.12 ppInternet Services & Infrastructure0.21%+0.11 ppElectronic Manufacturing Services0.17%+0.06 ppElectronic Components0.14%+0.04 ppTechnology Distributors0.00%+0.00 pp
3 · Sub-industry
Inside Semiconductors
Semiconductors · weight
3.16%
Industry change · 12M
+1.24 pp
Semiconductors · contribution
+1.241 pp
Company participation
40%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Aug 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 | $210.0bn | 1.142% | -0.006 pp | +0.421 pp | +0.4% | No |
| Texas Instruments → TXN | United States | $115.5bn | 0.628% | +0.058 pp | +0.276 pp | +13.3% | Yes |
| Qualcomm → QCOM | United States | $94.5bn | 0.514% | +0.041 pp | +0.188 pp | +17.9% | Yes |
| Advanced Micro Devices → AMD | United States | $34.1bn | 0.186% | +0.013 pp | +0.106 pp | +25.0% | Yes |
| Analog Devices → ADI | United States | $40.6bn | 0.221% | +0.013 pp | +0.102 pp | +13.5% | No |
| Micron Technology → MU | United States | $50.0bn | 0.272% | +0.062 pp | +0.075 pp | -13.8% | Yes |
| Broadcom → AVGO | United States | $11.3bn | 0.061% | +0.003 pp | +0.031 pp | +33.8% | No |
| Microchip Technology → MCHP | United States | $10.3bn | 0.056% | +0.000 pp | +0.023 pp | +2.1% | No |
| Skyworks Solutions → SWKS | United States | $12.9bn | 0.070% | +0.003 pp | +0.018 pp | -15.8% | No |
| Nvidia → NVDA | United States | $2.6bn | 0.014% | +0.002 pp | +0.000 pp | -40.1% | 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.