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 & Peripherals5.52%+3.40 ppSystems Software4.28%-2.28 ppSemiconductors2.09%-1.28 ppApplication Software2.08%-1.17 ppIT Consulting & Other Services0.74%-0.74 ppCommunications Equipment0.55%-0.60 ppElectronic Equipment & Instruments0.24%-0.10 ppInternet Services & Infrastructure0.10%-0.10 ppElectronic Manufacturing Services0.10%-0.06 ppTechnology Distributors0.05%-0.05 ppElectronic Components0.08%-0.04 ppSemiconductor Materials & Equipment0.28%-0.01 pp
3 · Sub-industry
Inside Semiconductors
Semiconductors · weight
2.09%
Industry change · 12M
-1.28 pp
Semiconductors · contribution
-1.276 pp
Company participation
70%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jan 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 | $225.5bn | 0.540% | -0.319 pp | -0.809 pp | -11.0% | Yes |
| Texas Instruments → TXN | United States | $152.1bn | 0.364% | -0.264 pp | -0.192 pp | +41.2% | No |
| Micron Technology → MU | United States | $87.6bn | 0.210% | -0.056 pp | -0.081 pp | +47.4% | Yes |
| Analog Devices → ADI | United States | $54.4bn | 0.130% | -0.077 pp | -0.069 pp | +37.0% | Yes |
| Qualcomm → QCOM | United States | $176.8bn | 0.423% | -0.236 pp | -0.057 pp | +87.9% | Yes |
| Skyworks Solutions → SWKS | United States | $27.9bn | 0.067% | -0.045 pp | -0.028 pp | +51.8% | Yes |
| Broadcom → AVGO | United States | $18.3bn | 0.044% | -0.023 pp | -0.016 pp | +54.4% | Yes |
| Microchip Technology → MCHP | United States | $17.7bn | 0.042% | -0.020 pp | -0.015 pp | +41.6% | Yes |
| Advanced Micro Devices → AMD | United States | $103.7bn | 0.248% | -0.180 pp | -0.010 pp | +82.2% | No |
| Nvidia → NVDA | United States | $8.0bn | 0.019% | -0.017 pp | +0.001 pp | +120.1% | 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.