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 Software8.50%+1.08 ppTechnology Hardware, Storage & Peripherals8.56%-0.51 ppApplication Software4.22%+0.40 ppSemiconductor Materials & Equipment0.53%+0.17 ppCommunications Equipment0.98%+0.09 ppSemiconductors3.41%+0.08 ppElectronic Equipment & Instruments0.45%+0.05 ppInternet Services & Infrastructure0.14%-0.04 ppIT Consulting & Other Services1.35%+0.02 ppElectronic Manufacturing Services0.16%+0.01 ppElectronic Components0.14%+0.00 ppTechnology Distributors0.09%+0.00 pp
3 · Sub-industry
Inside Semiconductors
Semiconductors · weight
3.41%
Industry change · 12M
+0.08 pp
Semiconductors · contribution
+0.081 pp
Company participation
33%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Oct 2021 · 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 | $199.3bn | 0.666% | -0.082 pp | -0.193 pp | +13.6% | No |
| NXP Semiconductors → NXPI | United States | $53.3bn | 0.178% | -0.017 pp | +0.178 pp | +50.3% | No |
| Nvidia → NVDA | United States | $63.9bn | 0.213% | +0.172 pp | +0.177 pp | +104.2% | Yes |
| Qualcomm → QCOM | United States | $150.1bn | 0.501% | -0.078 pp | -0.158 pp | +9.9% | No |
| Monolithic Power Systems → MPWR | United States | $24.1bn | 0.081% | +0.010 pp | +0.081 pp | +65.4% | Yes |
| Advanced Micro Devices → AMD | United States | $145.2bn | 0.485% | +0.043 pp | +0.056 pp | +59.7% | Yes |
| Texas Instruments → TXN | United States | $173.1bn | 0.578% | -0.025 pp | -0.050 pp | +32.7% | No |
| Skyworks Solutions → SWKS | United States | $27.6bn | 0.092% | -0.012 pp | -0.020 pp | +19.8% | No |
| Micron Technology → MU | United States | $77.3bn | 0.258% | -0.041 pp | -0.007 pp | +37.5% | No |
| Analog Devices → ADI | United States | $63.9bn | 0.213% | +0.002 pp | +0.006 pp | +48.9% | No |
| Broadcom → AVGO | United States | $21.9bn | 0.073% | +0.005 pp | +0.006 pp | +56.9% | Yes |
| Microchip Technology → MCHP | United States | $20.3bn | 0.068% | +0.001 pp | +0.005 pp | +42.6% | 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.