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
Semiconductors14.71%+3.11 ppTechnology Hardware, Storage & Peripherals7.97%-0.58 ppSystems Software8.28%+0.44 ppCommunications Equipment1.10%+0.33 ppSemiconductor Materials & Equipment0.74%+0.25 ppIT Consulting & Other Services0.95%-0.23 ppApplication Software3.55%+0.16 ppElectronic Components0.29%+0.11 ppElectronic Equipment & Instruments0.25%-0.04 ppElectronic Manufacturing Services0.18%+0.04 ppTechnology Distributors0.04%-0.03 ppInternet Services & Infrastructure0.11%-0.02 pp
3 · Sub-industry
Inside Technology Hardware, Storage & Peripherals
Technology Hardware, Storage & Peripherals · weight
7.97%
Industry change · 12M
-0.58 pp
Technology Hardware, Storage & Peripherals · contribution
-0.580 pp
Company participation
71%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Sep 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 | $3778.8bn | 7.565% | +0.957 pp | -0.682 pp | +9.8% | Yes |
| Supermicro → SMCI | United States | $28.5bn | 0.057% | -0.006 pp | +0.051 pp | +15.1% | No |
| Seagate Technology → STX | United States | $50.2bn | 0.101% | +0.034 pp | +0.047 pp | +120.8% | Yes |
| Western Digital → WDC | United States | $41.7bn | 0.083% | +0.035 pp | +0.042 pp | +133.3% | Yes |
| HP Inc. → HPQ | United States | $25.5bn | 0.051% | +0.001 pp | -0.030 pp | -21.0% | No |
| NetApp → NTAP | United States | $23.6bn | 0.047% | +0.001 pp | -0.012 pp | -2.2% | Yes |
| Hewlett Packard Enterprise → HPE | United States | $32.4bn | 0.065% | +0.007 pp | +0.003 pp | +23.3% | 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.