Question 1

How many shares of WDC does Parallax Volatility Advisers, L.P. own?

Accepted Answer

As of 2026-Q2, Parallax Volatility Advisers, L.P. holds 4,749 shares of WDC (WESTERN DIGITAL CORP).

Question 2

What is Parallax Volatility Advisers, L.P.'s WDC position worth?

Accepted Answer

As of 2026-Q2, Parallax Volatility Advisers, L.P.'s WDC position is worth $3M.

Question 3

Is Parallax Volatility Advisers, L.P. buying or selling WDC?

Accepted Answer

In 2026-Q2, Parallax Volatility Advisers, L.P. decreased their WDC position (-93.1% change in shares).

Question 4

When did Parallax Volatility Advisers, L.P. first buy WDC?

Accepted Answer

Based on available 13F filings, Parallax Volatility Advisers, L.P. first reported a position in WDC in 2024-Q3. They have held the position across 28 quarters.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Decreased	4,749	-93.1%	$3M	0.0%	$638.72	0
2026-Q1	Decreased	68,462	-29.6%	$18.5M	0.0%	$250.61	0
2025-Q4	Increased	97,217	+162.5%	$16.7M	0.0%	$176.06	46
2025-Q3	Decreased	37,031	-56.4%	$4.4M	0.0%	$116.65	0
2025-Q2	Decreased	85,002	-7.4%	$5.4M	0.0%	$63.17	0
2025-Q1	Increased	91,780	+53.4%	$3.7M	0.0%	$40.46	37
2024-Q4	Decreased	59,850	-7.3%	$3.6M	0.0%	$44.89	0
2024-Q3	Decreased	64,551	-37.8%	$4.4M	0.0%	$52.27	0