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
Semiconductors18.69%+6.47 ppTechnology Hardware, Storage & Peripherals9.29%+2.19 ppSystems Software6.70%-1.66 ppApplication Software2.34%-1.01 ppSemiconductor Materials & Equipment1.51%+0.94 ppCommunications Equipment1.58%+0.57 ppIT Consulting & Other Services0.76%-0.41 ppElectronic Components0.55%+0.33 ppElectronic Equipment & Instruments0.23%-0.06 ppInternet Services & Infrastructure0.10%-0.04 ppElectronic Manufacturing Services0.17%+0.03 ppTechnology Distributors0.03%-0.03 pp
3 · Sub-industry
Inside Semiconductors
Semiconductors · weight
18.69%
Industry change · 12M
+6.47 pp
Semiconductors · contribution
+6.466 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
May 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 | $1095.0bn | 1.898% | +1.261 pp | +1.658 pp | +930.4% | Yes |
| Nvidia → NVDA | United States | $5109.6bn | 8.855% | +2.945 pp | +1.384 pp | +56.3% | Yes |
| Broadcom → AVGO | United States | $2115.3bn | 3.666% | +1.586 pp | +1.087 pp | +86.1% | Yes |
| Advanced Micro Devices → AMD | United States | $841.6bn | 1.458% | +1.010 pp | +1.052 pp | +366.1% | Yes |
| Intel → INTC | United States | $576.4bn | 0.999% | +0.686 pp | +0.806 pp | +486.6% | Yes |
| Analog Devices → ADI | United States | $201.6bn | 0.349% | +0.111 pp | +0.109 pp | +96.4% | Yes |
| Texas Instruments → TXN | United States | $278.2bn | 0.482% | +0.218 pp | +0.106 pp | +71.9% | Yes |
| Qualcomm → QCOM | United States | $264.6bn | 0.458% | +0.250 pp | +0.097 pp | +76.9% | Yes |
| Monolithic Power Systems → MPWR | United States | $76.9bn | 0.133% | +0.056 pp | +0.062 pp | +138.4% | Yes |
| ON Semiconductor → ON | United States | $47.3bn | 0.082% | +0.046 pp | +0.042 pp | +187.1% | Yes |
| NXP Semiconductors → NXPI | United States | $81.1bn | 0.141% | +0.062 pp | +0.031 pp | +71.3% | Yes |
| First Solar → FSLR | United States | $33.0bn | 0.057% | +0.028 pp | +0.019 pp | +94.1% | Yes |
| Microchip Technology → MCHP | United States | $51.3bn | 0.089% | +0.033 pp | +0.018 pp | +67.5% | Yes |
| Skyworks Solutions → SWKS | United States | $11.7bn | 0.020% | +0.008 pp | -0.003 pp | +17.5% | 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.