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 Software8.74%+2.04 ppTechnology Hardware, Storage & Peripherals9.23%+1.49 ppSemiconductors4.01%+0.98 ppApplication Software3.81%+0.95 ppSemiconductor Materials & Equipment0.51%+0.12 ppCommunications Equipment0.85%-0.07 ppIT Consulting & Other Services1.33%+0.05 ppElectronic Manufacturing Services0.18%+0.05 ppElectronic Equipment & Instruments0.36%-0.03 ppElectronic Components0.12%-0.02 ppInternet Services & Infrastructure0.12%-0.01 ppTechnology Distributors0.09%+0.00 pp
3 · Sub-industry
Inside Semiconductors
Semiconductors · weight
4.01%
Industry change · 12M
+0.98 pp
Semiconductors · contribution
+0.984 pp
Company participation
86%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Dec 2023 · 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 |
|---|---|---|---|---|---|---|---|
| Advanced Micro Devices → AMD | United States | $238.1bn | 0.710% | +0.155 pp | +0.333 pp | +127.6% | Yes |
| Intel → INTC | United States | $211.9bn | 0.632% | +0.135 pp | +0.238 pp | +94.6% | Yes |
| Nvidia → NVDA | United States | $122.3bn | 0.365% | +0.006 pp | +0.235 pp | +239.0% | Yes |
| Micron Technology → MU | United States | $94.2bn | 0.281% | +0.032 pp | +0.084 pp | +71.9% | Yes |
| Texas Instruments → TXN | United States | $154.8bn | 0.462% | -0.020 pp | -0.079 pp | +6.4% | Yes |
| Broadcom → AVGO | United States | $52.3bn | 0.156% | +0.041 pp | +0.072 pp | +104.2% | Yes |
| Qualcomm → QCOM | United States | $161.0bn | 0.480% | +0.066 pp | +0.035 pp | +35.1% | Yes |
| Monolithic Power Systems → MPWR | United States | $30.2bn | 0.090% | +0.016 pp | +0.030 pp | +79.8% | Yes |
| NXP Semiconductors → NXPI | United States | $59.2bn | 0.177% | +0.004 pp | +0.029 pp | +48.4% | Yes |
| ON Semiconductor → ON | United States | $36.0bn | 0.107% | -0.027 pp | +0.010 pp | +33.9% | No |
| Analog Devices → ADI | United States | $98.5bn | 0.294% | +0.002 pp | -0.008 pp | +23.4% | Yes |
| Microchip Technology → MCHP | United States | $48.8bn | 0.146% | +0.004 pp | +0.006 pp | +30.9% | Yes |
| First Solar → FSLR | United States | $18.4bn | 0.055% | -0.003 pp | -0.003 pp | +15.0% | No |
| Skyworks Solutions → SWKS | United States | $18.0bn | 0.054% | +0.001 pp | +0.001 pp | +26.5% | 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.