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
Semiconductors18.72%+5.18 ppSystems Software5.78%-2.86 ppTechnology Hardware, Storage & Peripherals8.95%+2.01 ppApplication Software1.78%-1.78 ppSemiconductor Materials & Equipment2.20%+1.56 ppCommunications Equipment1.57%+0.52 ppIT Consulting & Other Services0.64%-0.51 ppElectronic Components0.70%+0.48 ppElectronic Manufacturing Services0.28%+0.12 ppInternet Services & Infrastructure0.09%-0.05 ppElectronic Equipment & Instruments0.24%-0.04 ppTechnology Distributors0.03%-0.02 pp
3 · Sub-industry
Inside Semiconductors
Semiconductors · weight
18.72%
Industry change · 12M
+5.18 pp
Semiconductors · contribution
+5.183 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jun 2026 · 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 | $1303.7bn | 2.265% | +1.710 pp | +1.968 pp | +838.8% | Yes |
| Advanced Micro Devices → AMD | United States | $947.2bn | 1.646% | +1.163 pp | +1.150 pp | +309.4% | Yes |
| Intel → INTC | United States | $701.8bn | 1.219% | +0.898 pp | +1.009 pp | +523.3% | Yes |
| Marvell Technology → MRVL | United States | $260.6bn | 0.453% | +0.453 pp | +0.453 pp | +285.9% | Yes |
| Broadcom → AVGO | United States | $1797.2bn | 3.123% | +0.989 pp | +0.327 pp | +38.0% | Yes |
| Nvidia → NVDA | United States | $4842.2bn | 8.414% | +2.243 pp | +0.102 pp | +26.8% | Yes |
| Analog Devices → ADI | United States | $193.5bn | 0.336% | +0.110 pp | +0.081 pp | +69.1% | Yes |
| Texas Instruments → TXN | United States | $271.3bn | 0.471% | +0.215 pp | +0.065 pp | +47.6% | Yes |
| Monolithic Power Systems → MPWR | United States | $67.9bn | 0.118% | +0.040 pp | +0.043 pp | +90.3% | Yes |
| Qualcomm → QCOM | United States | $194.8bn | 0.338% | +0.138 pp | -0.039 pp | +18.5% | Yes |
| ON Semiconductor → ON | United States | $37.1bn | 0.064% | +0.029 pp | +0.017 pp | +80.4% | Yes |
| Skyworks Solutions → SWKS | United States | $10.2bn | 0.018% | +0.006 pp | -0.006 pp | -5.2% | Yes |
| First Solar → FSLR | United States | $25.4bn | 0.044% | +0.013 pp | +0.006 pp | +42.5% | Yes |
| NXP Semiconductors → NXPI | United States | $71.0bn | 0.123% | +0.051 pp | +0.004 pp | +30.9% | Yes |
| Microchip Technology → MCHP | United States | $49.4bn | 0.086% | +0.035 pp | +0.004 pp | +33.1% | 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.