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 Software9.23%+2.66 ppApplication Software3.96%+0.91 ppSemiconductors4.03%+0.77 ppTechnology Hardware, Storage & Peripherals8.82%+0.66 ppIT Consulting & Other Services1.41%+0.17 ppSemiconductor Materials & Equipment0.51%+0.09 ppElectronic Equipment & Instruments0.35%-0.04 ppElectronic Manufacturing Services0.18%+0.04 ppCommunications Equipment0.86%-0.04 ppElectronic Components0.13%-0.01 ppInternet Services & Infrastructure0.12%-0.01 ppTechnology Distributors0.09%-0.00 pp
3 · Sub-industry
Inside Semiconductors
Semiconductors · weight
4.03%
Industry change · 12M
+0.77 pp
Semiconductors · contribution
+0.766 pp
Company participation
43%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jan 2024 · 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 |
|---|---|---|---|---|---|---|---|
| Advanced Micro Devices → AMD | United States | $271.0bn | 0.806% | +0.265 pp | +0.391 pp | +123.1% | Yes |
| Nvidia → NVDA | United States | $152.0bn | 0.452% | +0.109 pp | +0.287 pp | +215.1% | Yes |
| Intel → INTC | United States | $182.1bn | 0.542% | +0.018 pp | +0.141 pp | +56.0% | No |
| Texas Instruments → TXN | United States | $145.4bn | 0.432% | -0.006 pp | -0.118 pp | -6.7% | No |
| Broadcom → AVGO | United States | $55.2bn | 0.164% | +0.046 pp | +0.081 pp | +106.3% | Yes |
| Micron Technology → MU | United States | $94.7bn | 0.281% | +0.032 pp | +0.056 pp | +43.2% | Yes |
| First Solar → FSLR | United States | $15.6bn | 0.046% | -0.005 pp | -0.018 pp | -17.6% | No |
| Qualcomm → QCOM | United States | $165.7bn | 0.493% | +0.079 pp | -0.018 pp | +14.5% | Yes |
| ON Semiconductor → ON | United States | $30.6bn | 0.091% | -0.001 pp | -0.018 pp | -3.2% | No |
| Monolithic Power Systems → MPWR | United States | $28.9bn | 0.086% | +0.014 pp | +0.017 pp | +42.4% | Yes |
| Analog Devices → ADI | United States | $95.5bn | 0.284% | +0.017 pp | -0.015 pp | +14.3% | No |
| Skyworks Solutions → SWKS | United States | $16.7bn | 0.050% | +0.003 pp | -0.010 pp | -2.3% | No |
| Microchip Technology → MCHP | United States | $46.1bn | 0.137% | +0.005 pp | -0.009 pp | +11.9% | No |
| NXP Semiconductors → NXPI | United States | $54.3bn | 0.161% | +0.010 pp | -0.002 pp | +16.6% | 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.