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 Software4.67%+0.41 ppTechnology Hardware, Storage & Peripherals2.07%+0.37 ppSemiconductors3.49%+0.27 ppApplication Software3.04%+0.25 ppCommunications Equipment1.41%+0.09 ppSemiconductor Materials & Equipment0.31%-0.04 ppInternet Services & Infrastructure0.16%+0.03 ppElectronic Components0.16%-0.02 ppElectronic Manufacturing Services0.19%-0.01 ppIT Consulting & Other Services1.73%-0.01 ppElectronic Equipment & Instruments0.17%+0.01 ppTechnology Distributors0.00%+0.00 pp
3 · Sub-industry
Inside Semiconductors
Semiconductors · weight
3.49%
Industry change · 12M
+0.27 pp
Semiconductors · contribution
+0.274 pp
Company participation
70%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jun 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 | $231.6bn | 1.405% | -0.086 pp | +0.120 pp | +4.6% | No |
| Micron Technology → MU | United States | $60.8bn | 0.369% | -0.002 pp | +0.081 pp | +19.9% | Yes |
| Qualcomm → QCOM | United States | $83.2bn | 0.505% | +0.002 pp | -0.071 pp | -16.2% | No |
| Broadcom → AVGO | United States | $10.5bn | 0.064% | +0.064 pp | +0.064 pp | +0.6% | Yes |
| Texas Instruments → TXN | United States | $107.9bn | 0.655% | +0.028 pp | +0.038 pp | +1.1% | Yes |
| Analog Devices → ADI | United States | $35.6bn | 0.216% | +0.009 pp | +0.023 pp | +5.4% | Yes |
| Advanced Micro Devices → AMD | United States | $14.5bn | 0.088% | +0.028 pp | +0.013 pp | +9.1% | Yes |
| Skyworks Solutions → SWKS | United States | $17.6bn | 0.107% | -0.005 pp | +0.005 pp | +0.0% | No |
| Microchip Technology → MCHP | United States | $10.7bn | 0.065% | -0.001 pp | +0.001 pp | -3.7% | Yes |
| Nvidia → NVDA | United States | $3.6bn | 0.022% | +0.000 pp | +0.001 pp | -3.5% | 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.