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 Software4.49%-2.69 ppTechnology Hardware, Storage & Peripherals5.94%-2.26 ppApplication Software1.63%-1.54 ppIT Consulting & Other Services0.57%-0.61 ppSemiconductor Materials & Equipment0.91%+0.36 ppSemiconductors10.63%+0.25 ppElectronic Components0.35%+0.16 ppElectronic Equipment & Instruments0.18%-0.12 ppInternet Services & Infrastructure0.07%-0.07 ppCommunications Equipment0.95%-0.07 ppTechnology Distributors0.02%-0.03 ppElectronic Manufacturing Services0.13%-0.01 pp
3 · Sub-industry
Inside Semiconductors
Semiconductors · weight
10.63%
Industry change · 12M
+0.25 pp
Semiconductors · contribution
+0.251 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Mar 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 | $381.0bn | 0.555% | -0.074 pp | +0.324 pp | +289.7% | No |
| Broadcom → AVGO | United States | $1465.4bn | 2.134% | -1.080 pp | +0.265 pp | +86.4% | No |
| Qualcomm → QCOM | United States | $137.4bn | 0.200% | -0.159 pp | -0.203 pp | -14.2% | No |
| Texas Instruments → TXN | United States | $176.2bn | 0.257% | -0.052 pp | -0.132 pp | +11.4% | No |
| Nvidia → NVDA | United States | $4237.9bn | 6.171% | -2.705 pp | -0.107 pp | +61.0% | No |
| Advanced Micro Devices → AMD | United States | $331.7bn | 0.483% | -0.200 pp | +0.088 pp | +98.0% | No |
| Intel → INTC | United States | $220.4bn | 0.321% | -0.024 pp | +0.088 pp | +94.3% | No |
| NXP Semiconductors → NXPI | United States | $49.7bn | 0.072% | -0.035 pp | -0.042 pp | +5.6% | No |
| Skyworks Solutions → SWKS | United States | $8.1bn | 0.012% | -0.007 pp | -0.013 pp | -13.5% | No |
| Monolithic Power Systems → MPWR | United States | $53.7bn | 0.078% | -0.007 pp | +0.012 pp | +89.9% | No |
| Analog Devices → ADI | United States | $155.3bn | 0.226% | -0.034 pp | -0.011 pp | +60.2% | No |
| Microchip Technology → MCHP | United States | $35.0bn | 0.051% | -0.017 pp | -0.011 pp | +37.5% | No |
| ON Semiconductor → ON | United States | $24.4bn | 0.036% | -0.007 pp | -0.005 pp | +52.2% | No |
| First Solar → FSLR | United States | $21.2bn | 0.031% | -0.024 pp | -0.001 pp | +56.0% | 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.