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
Universe›Information Technology›Technology Hardware, Storage & Peripherals›Technology Hardware, Storage & Peripherals
1 · Sector
Weight and 12M allocation change
2 · Industry
Inside Information Technology
Semiconductors15.05%+2.87 ppApplication Software2.98%-0.53 ppTechnology Hardware, Storage & Peripherals8.35%-0.51 ppSemiconductor Materials & Equipment0.94%+0.37 ppCommunications Equipment1.07%+0.25 ppIT Consulting & Other Services0.99%-0.15 ppElectronic Components0.31%+0.12 ppElectronic Equipment & Instruments0.23%-0.05 ppElectronic Manufacturing Services0.18%+0.05 ppInternet Services & Infrastructure0.10%-0.04 ppTechnology Distributors0.03%-0.02 ppSystems Software7.56%+0.02 pp
3 · Sub-industry
Inside Technology Hardware, Storage & Peripherals
Technology Hardware, Storage & Peripherals · weight
8.35%
Industry change · 12M
-0.51 pp
Technology Hardware, Storage & Peripherals · contribution
-0.505 pp
Company participation
63%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Dec 2025 · 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 |
|---|---|---|---|---|---|---|---|
| Apple Inc. → AAPL | United States | $4017.1bn | 7.868% | +0.304 pp | -0.715 pp | +9.1% | Yes |
| Western Digital → WDC | United States | $58.9bn | 0.115% | +0.032 pp | +0.080 pp | +283.7% | Yes |
| Seagate Technology → STX | United States | $58.8bn | 0.115% | +0.015 pp | +0.074 pp | +225.3% | Yes |
| Sandisk → SNDK | United States | $34.8bn | 0.068% | +0.068 pp | +0.068 pp | +0.0% | Yes |
| Supermicro → SMCI | United States | $17.5bn | 0.034% | -0.023 pp | +0.030 pp | -4.0% | No |
| HP Inc. → HPQ | United States | $20.5bn | 0.040% | -0.011 pp | -0.029 pp | -28.7% | No |
| NetApp → NTAP | United States | $21.2bn | 0.042% | -0.006 pp | -0.012 pp | -5.9% | No |
| Hewlett Packard Enterprise → HPE | United States | $32.1bn | 0.063% | -0.002 pp | -0.001 pp | +15.5% | 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.