Question 1

How many shares of WESTERN DIGITAL CORP does Calamos Advisors LLC own?

Accepted Answer

As of 2026-Q2, Calamos Advisors LLC holds 48.7M shares of WESTERN DIGITAL CORP (WESTERN DIGITAL CORP).

Question 2

What is Calamos Advisors LLC's WESTERN DIGITAL CORP position worth?

Accepted Answer

As of 2026-Q2, Calamos Advisors LLC's WESTERN DIGITAL CORP position is worth $825.1M.

Question 3

Is Calamos Advisors LLC buying or selling WESTERN DIGITAL CORP?

Accepted Answer

In 2026-Q2, Calamos Advisors LLC decreased their WESTERN DIGITAL CORP position (-12.4% change in shares).

Question 4

When did Calamos Advisors LLC first buy WESTERN DIGITAL CORP?

Accepted Answer

Based on available 13F filings, Calamos Advisors LLC first reported a position in WESTERN DIGITAL CORP in 2024-Q4. They have held the position across 7 quarters.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Decreased	48.7M	-12.4%	$825.1M	2.7%	—	0
2026-Q1	Decreased	55.6M	-27.2%	$398.9M	1.4%	—	0
2025-Q4	Decreased	76.4M	-2.5%	$350.6M	1.3%	—	0
2025-Q3	Decreased	78.4M	-0.0%	$251.1M	0.9%	—	0
2025-Q2	Increased	78.4M	+9.3%	$140.8M	0.6%	—	47
2025-Q1	Decreased	71.7M	-0.2%	$92.4M	0.4%	—	0
2024-Q4	New	71.9M	—	$95.4M	0.4%	—	49

WEWESTERN DIGITAL CORP