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
Semiconductors14.10%+4.00 ppTechnology Hardware, Storage & Peripherals7.49%-1.23 ppSystems Software8.37%+0.47 ppCommunications Equipment1.12%+0.36 ppIT Consulting & Other Services0.93%-0.23 ppSemiconductor Materials & Equipment0.59%+0.09 ppElectronic Components0.26%+0.07 ppApplication Software3.38%+0.06 ppElectronic Equipment & Instruments0.26%-0.04 ppElectronic Manufacturing Services0.17%+0.03 ppTechnology Distributors0.04%-0.03 ppInternet Services & Infrastructure0.12%-0.02 pp
3 · Sub-industry
Inside Semiconductors
Semiconductors · weight
14.10%
Industry change · 12M
+4.00 pp
Semiconductors · contribution
+3.995 pp
Company participation
79%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Aug 2025 · 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 |
|---|---|---|---|---|---|---|---|
| Broadcom → AVGO | United States | $1398.8bn | 2.900% | +0.321 pp | +2.717 pp | +84.7% | Yes |
| Nvidia → NVDA | United States | $4232.6bn | 8.774% | +1.303 pp | +1.699 pp | +46.0% | Yes |
| Qualcomm → QCOM | United States | $173.4bn | 0.360% | -0.002 pp | -0.112 pp | -6.3% | No |
| Texas Instruments → TXN | United States | $184.1bn | 0.382% | +0.005 pp | -0.091 pp | -2.7% | Yes |
| ON Semiconductor → ON | United States | $20.3bn | 0.042% | +0.002 pp | -0.039 pp | -36.3% | No |
| NXP Semiconductors → NXPI | United States | $59.2bn | 0.123% | +0.013 pp | -0.035 pp | -6.7% | Yes |
| Advanced Micro Devices → AMD | United States | $263.9bn | 0.547% | +0.140 pp | -0.034 pp | +9.5% | Yes |
| Microchip Technology → MCHP | United States | $35.1bn | 0.073% | +0.002 pp | -0.034 pp | -18.6% | Yes |
| Monolithic Power Systems → MPWR | United States | $40.0bn | 0.083% | +0.011 pp | -0.027 pp | -9.8% | Yes |
| Analog Devices → ADI | United States | $123.6bn | 0.256% | +0.016 pp | -0.025 pp | +8.9% | Yes |
| Skyworks Solutions → SWKS | United States | $11.1bn | 0.023% | -0.000 pp | -0.019 pp | -29.0% | No |
| Micron Technology → MU | United States | $133.2bn | 0.276% | +0.037 pp | +0.018 pp | +24.2% | Yes |
| First Solar → FSLR | United States | $20.9bn | 0.043% | +0.005 pp | -0.015 pp | -14.2% | Yes |
| Intel → INTC | United States | $106.6bn | 0.221% | +0.028 pp | -0.007 pp | +10.5% | 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.