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 Software4.57%-3.11 ppSemiconductors12.72%+2.06 ppTechnology Hardware, Storage & Peripherals6.16%-1.79 ppApplication Software1.58%-1.68 ppIT Consulting & Other Services0.50%-0.67 ppSemiconductor Materials & Equipment1.01%+0.44 ppElectronic Components0.40%+0.19 ppElectronic Equipment & Instruments0.19%-0.10 ppInternet Services & Infrastructure0.07%-0.09 ppCommunications Equipment1.10%+0.08 ppTechnology Distributors0.02%-0.03 ppElectronic Manufacturing Services0.13%-0.01 pp
3 · Sub-industry
Inside Semiconductors
Semiconductors · weight
12.72%
Industry change · 12M
+2.06 pp
Semiconductors · contribution
+2.065 pp
Company participation
64%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Apr 2026 · 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 |
|---|---|---|---|---|---|---|---|
| Micron Technology → MU | United States | $583.2bn | 0.791% | -0.102 pp | +0.585 pp | +573.7% | Yes |
| Broadcom → AVGO | United States | $1976.4bn | 2.681% | -0.324 pp | +0.508 pp | +118.6% | No |
| Intel → INTC | United States | $474.9bn | 0.644% | +0.200 pp | +0.434 pp | +370.1% | Yes |
| Advanced Micro Devices → AMD | United States | $578.0bn | 0.784% | +0.047 pp | +0.405 pp | +264.1% | Yes |
| Nvidia → NVDA | United States | $4849.6bn | 6.580% | -2.306 pp | +0.198 pp | +83.3% | No |
| Qualcomm → QCOM | United States | $189.3bn | 0.257% | -0.054 pp | -0.135 pp | +23.8% | No |
| Monolithic Power Systems → MPWR | United States | $79.3bn | 0.108% | +0.005 pp | +0.039 pp | +174.3% | Yes |
| Analog Devices → ADI | United States | $196.4bn | 0.266% | -0.025 pp | +0.034 pp | +109.5% | Yes |
| ON Semiconductor → ON | United States | $39.7bn | 0.054% | +0.008 pp | +0.014 pp | +153.9% | Yes |
| NXP Semiconductors → NXPI | United States | $74.1bn | 0.101% | -0.008 pp | -0.011 pp | +62.3% | Yes |
| Skyworks Solutions → SWKS | United States | $10.6bn | 0.014% | -0.002 pp | -0.010 pp | +13.9% | No |
| Microchip Technology → MCHP | United States | $50.3bn | 0.068% | -0.010 pp | +0.009 pp | +107.7% | Yes |
| First Solar → FSLR | United States | $21.7bn | 0.029% | -0.017 pp | -0.003 pp | +60.5% | No |
| Texas Instruments → TXN | United States | $255.8bn | 0.347% | -0.028 pp | -0.002 pp | +79.6% | 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.