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
Technology Hardware, Storage & Peripherals8.57%+8.57 ppSystems Software7.61%+7.60 ppApplication Software3.96%+3.96 ppSemiconductors3.51%+3.51 ppIT Consulting & Other Services1.36%+1.36 ppCommunications Equipment0.99%+0.99 ppSemiconductor Materials & Equipment0.52%+0.52 ppElectronic Equipment & Instruments0.44%+0.44 ppElectronic Manufacturing Services0.16%+0.16 ppElectronic Components0.15%+0.15 ppInternet Services & Infrastructure0.14%+0.14 ppTechnology Distributors0.09%+0.09 pp
3 · Sub-industry
Inside Semiconductors
Semiconductors · weight
3.51%
Industry change · 12M
+3.51 pp
Semiconductors · contribution
+3.506 pp
Company participation
58%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Sep 2021 · 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 |
|---|---|---|---|---|---|---|---|
| Intel → INTC | United States | $216.2bn | 0.759% | -0.041 pp | +0.758 pp | +5.6% | No |
| Texas Instruments → TXN | United States | $177.4bn | 0.623% | -0.004 pp | +0.622 pp | +37.9% | Yes |
| Qualcomm → QCOM | United States | $145.5bn | 0.511% | -0.058 pp | +0.510 pp | +11.7% | No |
| Advanced Micro Devices → AMD | United States | $124.8bn | 0.438% | +0.035 pp | +0.438 pp | +25.5% | Yes |
| Micron Technology → MU | United States | $79.9bn | 0.281% | -0.056 pp | +0.280 pp | +51.4% | No |
| Analog Devices → ADI | United States | $61.7bn | 0.217% | -0.008 pp | +0.216 pp | +45.9% | Yes |
| NXP Semiconductors → NXPI | United States | $51.9bn | 0.182% | -0.018 pp | +0.182 pp | +58.6% | No |
| Nvidia → NVDA | United States | $51.8bn | 0.182% | +0.138 pp | +0.182 pp | +53.3% | Yes |
| Skyworks Solutions → SWKS | United States | $27.2bn | 0.096% | -0.016 pp | +0.095 pp | +14.7% | No |
| Monolithic Power Systems → MPWR | United States | $22.3bn | 0.078% | +0.018 pp | +0.078 pp | +74.4% | Yes |
| Microchip Technology → MCHP | United States | $21.0bn | 0.074% | +0.002 pp | +0.074 pp | +51.1% | Yes |
| Broadcom → AVGO | United States | $20.0bn | 0.070% | +0.001 pp | +0.070 pp | +37.3% | 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.