Atika Capital Management LLC

Position in WDC — Western Digital Corp

CIK 1599731 NEW YORK, NY

Position in WDC

as of Jun 30, 2026 · filed Aug 13, 2026 Compact

Position Value

$16,911,388

+$6,709,319 QoQ

Shares Held

26,477

-29.8% QoQ

Ownership

0.007%

of shares outstanding

% of Portfolio

1.68%

of 13F equity value

Holder Rank

#378

of 1,836 holders

Holding Since

Mar 2026

2 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Technology · as of Jun 30, 2026

Atika Capital Management LLC holds $94,670,052 across 3 Computer Hardware names. WDC ranks #2 (17.9% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	STX	Seagate Technology Holdings plc	79,865	$77,069,725
2	WDC	Western Digital Corp This page	26,477	$16,911,388
3	SNDK	Sandisk Corp	303	$688,939

2 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$16,911,388	26,477	-29.8%	Shares	Defined	2026-08-13
2026-03-31	$10,202,069	37,717	—	Shares	Defined	2026-05-14
No filing history on record for this holder in this stock.