WDCWestern Digital Corp.

CSNasdaq (XNAS)·USD

Identity

Security key: 23596
Ticker: WDC
Type: CS — Common Stock
Exchange: Nasdaq(XNAS)
Venue group: NASDAQ
Operating MIC: XNAS
Market: stocks
Locale: us
Currency: USD
Listed: 1978-10-31
Round lot: 40
Active: Yes
Last seen in a load: 2026-08-14 20:49
Vendor updated: 2026-08-13 06:09
Ticker root / suffix: WDC

Detail

Enriched 2026-08-14 20:47

Market cap: $156,520,155,687.1
Shares outstanding (class): 344,682,131
Shares outstanding (weighted): 344,682,131
SIC: 3572 COMPUTER STORAGE DEVICES
Employees: 40,000
Location: SAN JOSE, CA
Homepage: https://www.westerndigital.com
Description: Western Digital is a leading vertically integrated supplier of hard disk drives. The HDD market is a practical duopoly, with Western Digital and Seagate being the two largest players. Western Digital designs and manufactures its HDDs, with much of the manufacturing and workforce located in Asia. The primary consumers of HDDs are data centers.

Market cap and share counts drift.

Funds holding this security

526 funds · 536 positions · $24.43B reported value, as of 2026-03-31

All holders →

Fund	Ticker	Position value	% of fund	Balance	Match
VANGUARD TOTAL STOCK MARKET INDEX FUND VANGUARD INDEX FUNDS	VTI	$2.91B	0.15%	10,766,395 NS	FIGI
VANGUARD 500 INDEX FUND VANGUARD INDEX FUNDS	VOO	$2.33B	0.16%	8,614,792 NS	FIGI
VANGUARD MID-CAP INDEX FUND VANGUARD INDEX FUNDS	VO	$1.98B	1.00%	7,321,947 NS	FIGI
Invesco QQQ Trust, Series 1 Invesco QQQ Trust, Series 1	QQQ	$1.93B	0.52%	7,142,149 NS	FIGI
iShares Core S&P 500 ETF iShares Trust	IVV	$1.18B	0.16%	4,360,822 NS	FIGI
N/A —	—	$1.07B	0.16%	3,945,971 NS	FIGI
American Balanced Fund American Balanced Fund	—	$1.03B	0.39%	3,799,875 NS	FIGI
JPMorgan Large Cap Growth Fund JPMorgan Trust II	—	$996.11M	0.93%	3,682,616 NS	FIGI
American Funds Fundamental Investors American Funds Fundamental Investors	—	$836.17M	0.54%	3,091,300 NS	FIGI
State Street(R) Technology Select Sector SPDR(R… SELECT SECTOR SPDR TRUST	XLK	$687.73M	0.82%	2,542,530 NS	FIGI
VANGUARD GROWTH INDEX FUND VANGUARD INDEX FUNDS	VUG	$542.63M	0.17%	2,006,089 NS	FIGI
VANGUARD INSTITUTIONAL INDEX FUND VANGUARD INSTITUTIONAL INDEX FUNDS	—	$517.08M	0.16%	1,911,634 NS	FIGI
VANGUARD VALUE INDEX FUND VANGUARD INDEX FUNDS	VTV	$424.19M	0.19%	1,568,221 NS	FIGI
iShares Russell Mid-Cap ETF iShares Trust	IWR	$351.62M	0.73%	1,299,938 NS	FIGI
VANGUARD MID-CAP GROWTH INDEX FUND VANGUARD INDEX FUNDS	VOT	$348.76M	1.19%	1,289,378 NS	FIGI

How positions resolve to the securities master. FIGI_COMPOSITE is exact identifier equality — both sides got the FIGI from Bloomberg. TICKER is a narrow fallback used only where the master row carries no FIGI at all (2,389 rows do not, disproportionately Irish-domiciled US listings like LIN and ACN). Roughly 22% of all positions resolve to the master.

Funds holding this security

Identifiers

master.security_identifier

TICKERWDC
FIGI_COMPOSITEBBG000BWNFZ9
FIGI_SHARE_CLASSBBG001S5XD28
CIK0000106040
ISINUS9581021055
Resolved through OpenFIGI from a holdings ISIN, not supplied by the securities vendor.

Identifiers

Classification

classification.v_security_classification

Asset class: Equity
Sector: Information Technology
Industry: Technology Hardware
Source: LLMunreviewed
Self-reported confidence: 0.95
Model: deepseek
Rationale: Western Digital is a computer storage device manufacturer, classified under technology hardware.

Classifications are unreviewed model output. All 5,771 assignments carry source = LLM and is_reviewed = false. Confidence is the model’s own estimate and is not calibrated — it clustered at 0.90–0.98 across the whole first pass, including rows that later proved wrong. Use it to order a review queue, not as a probability. Two share classes of one issuer can disagree.

Classification

Fund data

Not linked to a fund series.

Either this is not a fund, or it is one the SEC share-class snapshot cannot reach — commodity trusts and notes have no series ID at all.