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
Semiconductors14.71%+3.11 ppTechnology Hardware, Storage & Peripherals7.97%-0.58 ppSystems Software8.28%+0.44 ppCommunications Equipment1.10%+0.33 ppSemiconductor Materials & Equipment0.74%+0.25 ppIT Consulting & Other Services0.95%-0.23 ppApplication Software3.55%+0.16 ppElectronic Components0.29%+0.11 ppElectronic Equipment & Instruments0.25%-0.04 ppElectronic Manufacturing Services0.18%+0.04 ppTechnology Distributors0.04%-0.03 ppInternet Services & Infrastructure0.11%-0.02 pp
3 · Sub-industry
Inside Semiconductors
Semiconductors · weight
14.71%
Industry change · 12M
+3.11 pp
Semiconductors · contribution
+3.114 pp
Company participation
50%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Sep 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 |
|---|---|---|---|---|---|---|---|
| Nvidia → NVDA | United States | $4533.9bn | 9.076% | +0.764 pp | +2.142 pp | +53.7% | Yes |
| Broadcom → AVGO | United States | $1558.0bn | 3.119% | +0.323 pp | +1.243 pp | +93.1% | Yes |
| Micron Technology → MU | United States | $187.3bn | 0.375% | +0.077 pp | +0.107 pp | +62.1% | Yes |
| Texas Instruments → TXN | United States | $167.0bn | 0.334% | -0.072 pp | -0.105 pp | -8.4% | No |
| Advanced Micro Devices → AMD | United States | $262.6bn | 0.526% | +0.030 pp | -0.093 pp | -1.4% | Yes |
| Qualcomm → QCOM | United States | $179.5bn | 0.359% | -0.018 pp | -0.082 pp | +0.0% | No |
| Intel → INTC | United States | $146.8bn | 0.294% | +0.083 pp | +0.060 pp | +43.0% | Yes |
| ON Semiconductor → ON | United States | $20.2bn | 0.040% | -0.007 pp | -0.032 pp | -32.1% | No |
| Microchip Technology → MCHP | United States | $34.7bn | 0.069% | -0.012 pp | -0.031 pp | -17.7% | No |
| NXP Semiconductors → NXPI | United States | $57.4bn | 0.115% | -0.004 pp | -0.027 pp | -3.3% | No |
| Analog Devices → ADI | United States | $120.9bn | 0.242% | -0.013 pp | -0.024 pp | +8.6% | No |
| Monolithic Power Systems → MPWR | United States | $44.1bn | 0.088% | +0.013 pp | -0.017 pp | +0.4% | Yes |
| First Solar → FSLR | United States | $23.7bn | 0.047% | +0.009 pp | -0.015 pp | -11.6% | Yes |
| Skyworks Solutions → SWKS | United States | $11.4bn | 0.023% | -0.001 pp | -0.014 pp | -19.1% | 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.