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 Software4.83%+0.56 ppTechnology Hardware, Storage & Peripherals2.02%+0.32 ppApplication Software3.01%+0.23 ppSemiconductors3.39%+0.17 ppIT Consulting & Other Services1.68%-0.06 ppInternet Services & Infrastructure0.18%+0.05 ppSemiconductor Materials & Equipment0.31%-0.04 ppCommunications Equipment1.34%+0.02 ppElectronic Equipment & Instruments0.18%+0.02 ppElectronic Manufacturing Services0.19%-0.02 ppElectronic Components0.18%+0.00 ppTechnology Distributors0.00%+0.00 pp
3 · Sub-industry
Inside Semiconductors
Semiconductors · weight
3.39%
Industry change · 12M
+0.17 pp
Semiconductors · contribution
+0.166 pp
Company participation
40%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jul 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 |
|---|---|---|---|---|---|---|---|
| Micron Technology → MU | United States | $61.2bn | 0.357% | +0.029 pp | +0.069 pp | +20.7% | No |
| Broadcom → AVGO | United States | $9.6bn | 0.056% | +0.056 pp | +0.056 pp | -8.1% | Yes |
| Advanced Micro Devices → AMD | United States | $17.8bn | 0.104% | +0.039 pp | +0.028 pp | +33.4% | Yes |
| Qualcomm → QCOM | United States | $94.2bn | 0.549% | +0.084 pp | -0.027 pp | -4.3% | Yes |
| Texas Instruments → TXN | United States | $109.0bn | 0.636% | +0.022 pp | +0.019 pp | +2.7% | No |
| Analog Devices → ADI | United States | $35.7bn | 0.208% | +0.009 pp | +0.015 pp | +5.7% | Yes |
| Intel → INTC | United States | $221.8bn | 1.294% | -0.185 pp | +0.009 pp | +1.2% | No |
| Skyworks Solutions → SWKS | United States | $16.9bn | 0.099% | +0.001 pp | -0.003 pp | -2.1% | No |
| Microchip Technology → MCHP | United States | $11.0bn | 0.064% | +0.004 pp | +0.001 pp | -1.1% | No |
| Nvidia → NVDA | United States | $3.7bn | 0.022% | +0.001 pp | +0.000 pp | -0.3% | 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.