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

Information Technology39.6%+4.74 pp Consumer Discretionary12.3%+1.05 pp Utilities2.7%-0.15 pp Financials11.2%-0.18 pp Industrials9.5%-0.27 pp Energy2.2%-0.34 pp Communication Services2.1%-0.37 pp Real Estate2.1%-0.48 pp Materials2.0%-0.52 pp Consumer Staples5.9%-1.08 pp Health Care10.5%-2.40 pp

2 · Industry

Inside Information Technology

Semiconductors15.99%+3.85 pp Systems Software8.13%+0.62 pp Communications Equipment1.12%+0.32 pp Semiconductor Materials & Equipment0.84%+0.20 pp IT Consulting & Other Services0.98%-0.16 pp Electronic Components0.32%+0.13 pp Technology Hardware, Storage & Peripherals8.25%-0.11 pp Electronic Equipment & Instruments0.23%-0.06 pp Electronic Manufacturing Services0.19%+0.05 pp Application Software3.37%-0.05 pp Internet Services & Infrastructure0.10%-0.03 pp Technology Distributors0.04%-0.02 pp

3 · Sub-industry

Inside Technology Hardware, Storage & Peripherals

Technology Hardware, Storage & Peripherals8.25%-0.108 pp

Concentrated

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

View all contributions →

Technology Hardware, Storage & Peripherals · weight

8.25%

Industry change · 12M

-0.11 pp

Technology Hardware, Storage & Peripherals · contribution

-0.108 pp

Company participation

86%

of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Oct 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	$3995.1bn	7.826%	+1.289 pp	-0.246 pp	+20.2%	Yes
Western Digital → WDC	United States	$51.4bn	0.101%	+0.043 pp	+0.060 pp	+205.2%	Yes
Seagate Technology → STX	United States	$54.6bn	0.107%	+0.037 pp	+0.057 pp	+161.1%	Yes
Supermicro → SMCI	United States	$30.9bn	0.060%	-0.014 pp	+0.056 pp	+78.5%	Yes
HP Inc. → HPQ	United States	$25.9bn	0.051%	+0.002 pp	-0.030 pp	-18.9%	No
NetApp → NTAP	United States	$23.5bn	0.046%	+0.002 pp	-0.009 pp	+4.2%	Yes
Hewlett Packard Enterprise → HPE	United States	$32.2bn	0.063%	+0.006 pp	+0.004 pp	+28.7%	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.