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 Software5.08%+0.66 ppApplication Software3.31%+0.38 ppSemiconductors3.18%-0.22 ppIT Consulting & Other Services1.59%-0.20 ppSemiconductor Materials & Equipment0.24%-0.16 ppTechnology Hardware, Storage & Peripherals1.73%-0.13 ppElectronic Equipment & Instruments0.29%+0.12 ppCommunications Equipment1.52%+0.07 ppElectronic Manufacturing Services0.16%-0.06 ppInternet Services & Infrastructure0.19%+0.05 ppElectronic Components0.18%+0.01 ppTechnology Distributors0.00%+0.00 pp
3 · Sub-industry
Inside Semiconductors
Semiconductors · weight
3.18%
Industry change · 12M
-0.22 pp
Semiconductors · contribution
-0.224 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Feb 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 |
|---|---|---|---|---|---|---|---|
| Qualcomm → QCOM | United States | $64.6bn | 0.375% | +0.140 pp | -0.202 pp | -15.3% | Yes |
| Micron Technology → MU | United States | $45.8bn | 0.266% | +0.120 pp | -0.073 pp | -16.2% | Yes |
| Advanced Micro Devices → AMD | United States | $23.7bn | 0.137% | +0.066 pp | +0.067 pp | +94.3% | Yes |
| Broadcom → AVGO | United States | $11.2bn | 0.065% | +0.032 pp | +0.065 pp | +17.0% | Yes |
| Texas Instruments → TXN | United States | $99.3bn | 0.575% | +0.257 pp | -0.063 pp | +0.4% | Yes |
| Skyworks Solutions → SWKS | United States | $14.2bn | 0.082% | +0.039 pp | -0.037 pp | -24.0% | Yes |
| Analog Devices → ADI | United States | $39.4bn | 0.228% | +0.115 pp | +0.029 pp | +21.7% | Yes |
| Nvidia → NVDA | United States | $2.3bn | 0.014% | +0.005 pp | -0.008 pp | -36.1% | Yes |
| Microchip Technology → MCHP | United States | $10.3bn | 0.060% | +0.030 pp | -0.003 pp | -0.6% | Yes |
| Intel → INTC | United States | $238.2bn | 1.380% | +0.633 pp | +0.002 pp | +10.1% | 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.