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
Semiconductors1.76%-1.46 ppSystems Software2.84%-1.43 ppApplication Software1.72%-1.07 ppIT Consulting & Other Services0.85%-0.90 ppTechnology Hardware, Storage & Peripherals0.97%-0.72 ppCommunications Equipment0.80%-0.51 ppSemiconductor Materials & Equipment0.12%-0.23 ppElectronic Manufacturing Services0.09%-0.11 ppElectronic Components0.10%-0.08 ppInternet Services & Infrastructure0.10%-0.03 ppElectronic Equipment & Instruments0.14%-0.02 ppTechnology Distributors0.00%+0.00 pp
3 · Sub-industry
Inside Semiconductors
Semiconductors · weight
1.76%
Industry change · 12M
-1.46 pp
Semiconductors · contribution
-1.460 pp
Company participation
10%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Dec 2018 · 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 | $214.2bn | 0.766% | +0.071 pp | -0.519 pp | -0.1% | No |
| Qualcomm → QCOM | United States | $69.0bn | 0.247% | -0.091 pp | -0.330 pp | -13.3% | No |
| Texas Instruments → TXN | United States | $90.8bn | 0.325% | -0.008 pp | -0.292 pp | -12.1% | No |
| Micron Technology → MU | United States | $35.6bn | 0.127% | -0.040 pp | -0.161 pp | -27.4% | No |
| Analog Devices → ADI | United States | $31.8bn | 0.114% | +0.004 pp | -0.080 pp | -4.7% | No |
| Skyworks Solutions → SWKS | United States | $11.9bn | 0.043% | -0.009 pp | -0.059 pp | -30.0% | No |
| Broadcom → AVGO | United States | $10.4bn | 0.037% | +0.005 pp | +0.037 pp | +7.3% | Yes |
| Microchip Technology → MCHP | United States | $8.5bn | 0.030% | +0.001 pp | -0.033 pp | -23.1% | No |
| Nvidia → NVDA | United States | $2.0bn | 0.007% | -0.006 pp | -0.014 pp | -45.5% | No |
| Advanced Micro Devices → AMD | United States | $18.4bn | 0.066% | -0.030 pp | -0.010 pp | +34.4% | 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.