Question 1

How many shares of WESTERN DIGITAL CORP does CAPSTONE INVESTMENT ADVISORS, LLC own?

Accepted Answer

As of 2026-Q2, CAPSTONE INVESTMENT ADVISORS, LLC holds 80.5M shares of WESTERN DIGITAL CORP (WESTERN DIGITAL CORP).

Question 2

What is CAPSTONE INVESTMENT ADVISORS, LLC's WESTERN DIGITAL CORP position worth?

Accepted Answer

As of 2026-Q2, CAPSTONE INVESTMENT ADVISORS, LLC's WESTERN DIGITAL CORP position is worth $1.4B.

Question 3

When did CAPSTONE INVESTMENT ADVISORS, LLC first buy WESTERN DIGITAL CORP?

Accepted Answer

Based on available 13F filings, CAPSTONE INVESTMENT ADVISORS, LLC first reported a position in WESTERN DIGITAL CORP in 2025-Q3. They have held the position across 4 quarters.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Unchanged	80.5M	0.0%	$1.4B	2.5%	—	0
2026-Q1	Increased	80.5M	+36.4%	$576.5M	1.0%	—	65
2025-Q4	Increased	59M	+8.3%	$270.6M	0.5%	—	47
2025-Q3	New	54.5M	—	$174.9M	0.3%	—	50

WEWESTERN DIGITAL CORP