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 Software2.82%-1.45 ppSemiconductors1.92%-1.30 ppApplication Software1.80%-0.99 ppIT Consulting & Other Services0.95%-0.79 ppCommunications Equipment0.83%-0.48 ppTechnology Hardware, Storage & Peripherals1.26%-0.43 ppSemiconductor Materials & Equipment0.15%-0.20 ppElectronic Manufacturing Services0.10%-0.10 ppElectronic Components0.10%-0.08 ppElectronic Equipment & Instruments0.10%-0.06 ppInternet Services & Infrastructure0.10%-0.03 ppTechnology Distributors0.00%+0.00 pp
3 · Sub-industry
Inside Semiconductors
Semiconductors · weight
1.92%
Industry change · 12M
-1.30 pp
Semiconductors · contribution
-1.298 pp
Company participation
10%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Aug 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 | $223.3bn | 0.721% | -0.840 pp | -0.564 pp | +2.5% | No |
| Texas Instruments → TXN | United States | $109.3bn | 0.353% | -0.312 pp | -0.264 pp | +3.7% | No |
| Qualcomm → QCOM | United States | $100.9bn | 0.326% | -0.197 pp | -0.250 pp | +2.6% | No |
| Micron Technology → MU | United States | $60.9bn | 0.197% | -0.209 pp | -0.092 pp | +20.1% | No |
| Analog Devices → ADI | United States | $36.7bn | 0.119% | -0.100 pp | -0.075 pp | +9.2% | No |
| Skyworks Solutions → SWKS | United States | $16.3bn | 0.053% | -0.056 pp | -0.049 pp | -5.1% | No |
| Microchip Technology → MCHP | United States | $10.1bn | 0.033% | -0.037 pp | -0.031 pp | -8.5% | No |
| Broadcom → AVGO | United States | $9.5bn | 0.031% | +0.031 pp | +0.031 pp | -9.2% | Yes |
| Nvidia → NVDA | United States | $4.3bn | 0.014% | -0.009 pp | -0.007 pp | +14.4% | No |
| Advanced Micro Devices → AMD | United States | $24.5bn | 0.079% | -0.002 pp | +0.004 pp | +83.2% | 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.