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 & Peripherals1.99%+0.29 ppSystems Software4.52%+0.25 ppApplication Software2.97%+0.18 ppCommunications Equipment1.48%+0.17 ppSemiconductors3.33%+0.10 ppElectronic Components0.16%-0.02 ppInternet Services & Infrastructure0.14%+0.02 ppElectronic Manufacturing Services0.20%-0.01 ppIT Consulting & Other Services1.74%-0.01 ppElectronic Equipment & Instruments0.17%+0.00 ppSemiconductor Materials & Equipment0.35%-0.00 ppTechnology Distributors0.00%+0.00 pp
3 · Sub-industry
Inside Semiconductors
Semiconductors · weight
3.33%
Industry change · 12M
+0.10 pp
Semiconductors · contribution
+0.104 pp
Company participation
11%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Apr 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 | $240.5bn | 1.478% | +0.193 pp | +0.193 pp | +8.0% | Yes |
| Qualcomm → QCOM | United States | $75.6bn | 0.465% | -0.112 pp | -0.112 pp | -24.6% | No |
| Micron Technology → MU | United States | $53.3bn | 0.328% | +0.039 pp | +0.039 pp | +5.2% | No |
| Advanced Micro Devices → AMD | United States | $10.5bn | 0.065% | -0.011 pp | -0.011 pp | -20.8% | No |
| Analog Devices → ADI | United States | $32.3bn | 0.198% | +0.005 pp | +0.005 pp | -4.4% | No |
| Skyworks Solutions → SWKS | United States | $15.8bn | 0.097% | -0.004 pp | -0.004 pp | -10.5% | No |
| Texas Instruments → TXN | United States | $99.8bn | 0.613% | -0.003 pp | -0.003 pp | -7.5% | No |
| Microchip Technology → MCHP | United States | $9.8bn | 0.060% | -0.003 pp | -0.003 pp | -11.8% | No |
| Nvidia → NVDA | United States | $3.4bn | 0.021% | -0.000 pp | -0.000 pp | -8.4% | 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.