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 Software5.73%+2.89 ppSemiconductors3.19%+1.32 ppApplication Software3.11%+1.30 ppIT Consulting & Other Services1.55%+0.60 ppTechnology Hardware, Storage & Peripherals1.81%+0.58 ppCommunications Equipment1.31%+0.50 ppElectronic Equipment & Instruments0.29%+0.20 ppSemiconductor Materials & Equipment0.28%+0.14 ppInternet Services & Infrastructure0.20%+0.10 ppTechnology Distributors0.09%+0.09 ppElectronic Manufacturing Services0.17%+0.07 ppElectronic Components0.14%+0.03 pp
3 · Sub-industry
Inside Semiconductors
Semiconductors · weight
3.19%
Industry change · 12M
+1.32 pp
Semiconductors · contribution
+1.323 pp
Company participation
50%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Sep 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 | $228.3bn | 1.213% | +0.057 pp | +0.518 pp | +11.8% | Yes |
| Texas Instruments → TXN | United States | $120.7bn | 0.641% | +0.060 pp | +0.309 pp | +24.0% | Yes |
| Qualcomm → QCOM | United States | $92.7bn | 0.493% | -0.006 pp | +0.155 pp | +10.2% | No |
| Analog Devices → ADI | United States | $41.3bn | 0.219% | -0.006 pp | +0.110 pp | +23.4% | No |
| Micron Technology → MU | United States | $47.3bn | 0.251% | +0.022 pp | +0.084 pp | -5.3% | Yes |
| Advanced Micro Devices → AMD | United States | $31.5bn | 0.167% | -0.010 pp | +0.071 pp | -6.2% | No |
| Microchip Technology → MCHP | United States | $11.1bn | 0.059% | +0.003 pp | +0.029 pp | +19.8% | Yes |
| Broadcom → AVGO | United States | $11.0bn | 0.058% | -0.004 pp | +0.026 pp | +16.2% | No |
| Skyworks Solutions → SWKS | United States | $13.6bn | 0.072% | +0.000 pp | +0.021 pp | -10.7% | No |
| Nvidia → NVDA | United States | $2.7bn | 0.014% | +0.001 pp | +0.000 pp | -37.8% | 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.