CASTLEARK MANAGEMENT LLC

Position in AAOI — Applied Optoelectronics, Inc.

CIK 1106832 CHICAGO, IL

Position in AAOI

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$2,173,963

-$1,077,114 QoQ

Shares Held

25,700

-79.5% QoQ

Ownership

0.032%

of shares outstanding

% of Portfolio

0.08%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Sep 2025

2 quarters on record

Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Technology · as of Mar 31, 2026

CASTLEARK MANAGEMENT LLC holds $15,314,796 across 3 Communication Equipment names. AAOI ranks #2 (14.2% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	VIAV	Viavi Solutions Inc.	378,597	$12,599,708
2	AAOI	Applied Optoelectronics, Inc. This page	25,700	$2,173,963
3	LITE	Lumentum Holdings Inc.	770	$541,125

2 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$2,173,963	25,700	-79.5%	Shares	Sole	2026-05-15
2025-09-30	$3,251,077	125,379	—	Shares	Sole	2025-11-17
No filing history on record for this holder in this stock.