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
Semiconductors15.34%+4.26 ppApplication Software2.45%-1.03 ppSemiconductor Materials & Equipment1.19%+0.57 ppSystems Software6.78%-0.52 ppIT Consulting & Other Services0.97%-0.28 ppCommunications Equipment1.09%+0.26 ppTechnology Hardware, Storage & Peripherals7.94%-0.21 ppElectronic Components0.34%+0.14 ppElectronic Equipment & Instruments0.23%-0.08 ppInternet Services & Infrastructure0.10%-0.05 ppElectronic Manufacturing Services0.17%+0.04 ppTechnology Distributors0.03%-0.03 pp
3 · Sub-industry
Inside Technology Hardware, Storage & Peripherals
Technology Hardware, Storage & Peripherals · weight
7.94%
Industry change · 12M
-0.21 pp
Technology Hardware, Storage & Peripherals · contribution
-0.212 pp
Company participation
38%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jan 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 |
|---|---|---|---|---|---|---|---|
| Apple Inc. → AAPL | United States | $3809.5bn | 7.288% | -0.538 pp | -0.594 pp | +10.4% | No |
| Sandisk → SNDK | United States | $85.0bn | 0.163% | +0.163 pp | +0.163 pp | +0.0% | Yes |
| Seagate Technology → STX | United States | $88.9bn | 0.170% | +0.063 pp | +0.125 pp | +331.3% | Yes |
| Western Digital → WDC | United States | $84.8bn | 0.162% | +0.062 pp | +0.124 pp | +410.2% | Yes |
| HP Inc. → HPQ | United States | $17.8bn | 0.034% | -0.017 pp | -0.034 pp | -37.5% | No |
| Supermicro → SMCI | United States | $17.4bn | 0.033% | -0.027 pp | +0.030 pp | +2.1% | No |
| NetApp → NTAP | United States | $19.1bn | 0.037% | -0.010 pp | -0.019 pp | -19.5% | No |
| Hewlett Packard Enterprise → HPE | United States | $28.7bn | 0.055% | -0.008 pp | -0.007 pp | +4.3% | 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.