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 Software5.30%+0.89 ppApplication Software3.29%+0.39 ppSemiconductors3.21%-0.25 ppTechnology Hardware, Storage & Peripherals1.82%-0.21 ppSemiconductor Materials & Equipment0.24%-0.15 ppIT Consulting & Other Services1.65%-0.13 ppCommunications Equipment1.56%+0.13 ppElectronic Equipment & Instruments0.30%+0.12 ppElectronic Manufacturing Services0.16%-0.06 ppInternet Services & Infrastructure0.19%+0.05 ppElectronic Components0.17%+0.00 ppTechnology Distributors0.00%+0.00 pp
3 · Sub-industry
Inside Semiconductors
Semiconductors · weight
3.21%
Industry change · 12M
-0.25 pp
Semiconductors · contribution
-0.247 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Mar 2019 · 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 |
|---|---|---|---|---|---|---|---|
| Micron Technology → MU | United States | $45.7bn | 0.263% | +0.136 pp | -0.108 pp | -20.7% | Yes |
| Qualcomm → QCOM | United States | $69.0bn | 0.397% | +0.150 pp | -0.107 pp | +7.3% | Yes |
| Intel → INTC | United States | $241.5bn | 1.387% | +0.622 pp | -0.104 pp | +5.7% | Yes |
| Advanced Micro Devices → AMD | United States | $25.7bn | 0.147% | +0.081 pp | +0.088 pp | +153.9% | Yes |
| Broadcom → AVGO | United States | $11.9bn | 0.068% | +0.031 pp | +0.068 pp | +32.8% | Yes |
| Texas Instruments → TXN | United States | $99.5bn | 0.572% | +0.247 pp | -0.055 pp | +5.0% | Yes |
| Skyworks Solutions → SWKS | United States | $14.4bn | 0.082% | +0.040 pp | -0.030 pp | -16.3% | Yes |
| Analog Devices → ADI | United States | $38.8bn | 0.223% | +0.109 pp | +0.016 pp | +17.8% | Yes |
| Microchip Technology → MCHP | United States | $9.8bn | 0.056% | +0.026 pp | -0.009 pp | -7.6% | Yes |
| Nvidia → NVDA | United States | $2.7bn | 0.016% | +0.008 pp | -0.006 pp | -22.2% | 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.