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

Latest available · not live

20182026

Universe›Information Technology›Technology Hardware, Storage & Peripherals›Technology Hardware, Storage & Peripherals

1 · Sector

Weight and 12M allocation change

Information Technology43.1%+4.93 pp Energy3.8%+1.55 pp Health Care10.6%+0.26 pp Materials1.9%-0.22 pp Communication Services2.1%-0.27 pp Real Estate1.8%-0.35 pp Industrials9.1%-0.58 pp Utilities2.1%-0.61 pp Consumer Staples5.4%-0.78 pp Consumer Discretionary10.3%-1.78 pp Financials9.7%-2.16 pp

2 · Industry

Inside Information Technology

Semiconductors18.63%+3.92 pp Application Software1.82%-1.73 pp Technology Hardware, Storage & Peripherals9.60%+1.63 pp Semiconductor Materials & Equipment1.95%+1.21 pp Communications Equipment1.54%+0.44 pp Systems Software7.87%-0.41 pp IT Consulting & Other Services0.61%-0.34 pp Electronic Components0.49%+0.20 pp Electronic Manufacturing Services0.22%+0.04 pp Internet Services & Infrastructure0.09%-0.02 pp Technology Distributors0.03%-0.01 pp Electronic Equipment & Instruments0.24%-0.01 pp

3 · Sub-industry

Inside Technology Hardware, Storage & Peripherals

Technology Hardware, Storage & Peripherals9.60%+1.628 pp

Concentrated

Most of this industry's gains came from a few companies.

View all contributions →

Technology Hardware, Storage & Peripherals · weight

9.60%

Industry change · 12M

+1.63 pp

Technology Hardware, Storage & Peripherals · contribution

+1.628 pp

Company participation

89%

of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Sep 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	$4860.1bn	8.165%	+0.780 pp	+0.600 pp	+31.3%	Yes
Sandisk → SNDK	United States	$254.8bn	0.428%	-0.157 pp	+0.428 pp	+1450.7%	Yes
Seagate Technology → STX	United States	$209.0bn	0.351%	-0.025 pp	+0.251 pp	+293.0%	Yes
Western Digital → WDC	United States	$163.9bn	0.275%	-0.107 pp	+0.192 pp	+279.2%	No
Hewlett Packard Enterprise → HPE	United States	$84.8bn	0.142%	+0.039 pp	+0.078 pp	+164.8%	Yes
Everpure → P	United States	$43.6bn	0.073%	+0.073 pp	+0.073 pp	+56.0%	Yes
NetApp → NTAP	United States	$41.3bn	0.069%	+0.017 pp	+0.022 pp	+80.4%	Yes
Supermicro → SMCI	United States	$27.0bn	0.045%	+0.015 pp	-0.012 pp	-14.3%	Yes
HP Inc. → HPQ	United States	$28.2bn	0.047%	+0.013 pp	-0.004 pp	+20.7%	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.