OBERWEIS ASSET MANAGEMENT INC/

Position in AAOI — Applied Optoelectronics, Inc.

CIK 937886 LISLE, IL

Position in AAOI

as of Jun 30, 2026 · filed Aug 14, 2026 Compact

Position Value

$265,373,376

+$66,589,499 QoQ

Shares Held

1,791,127

-23.8% QoQ

Ownership

2.12%

of shares outstanding

% of Portfolio

5.53%

of 13F equity value

Holder Rank

of 480 holders

Holding Since

Sep 2023

12 quarters on record

Voting authority Sole 99% Shared 0% None 1%

Technology · as of Jun 30, 2026

OBERWEIS ASSET MANAGEMENT INC/ holds $381,803,098 across 4 Communication Equipment names. AAOI ranks #1 (69.5% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	AAOI	Applied Optoelectronics, Inc. This page	1,791,127	$265,373,376
2	LITE	Lumentum Holdings Inc.	72,185	$61,939,061
3	VIAV	Viavi Solutions Inc.	793,600	$37,894,400
4	VISN	Vistance Networks, Inc.	1,298,612	$16,596,261

12 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$265,373,376	1,791,127	-23.8%	Shares	Sole	2026-08-14
2026-03-31	$198,783,877	2,349,969	+15.2%	Shares	Sole	2026-05-15
2025-12-31	$71,101,885	2,039,641	+8.0%	Shares	Sole	2026-02-17
2025-09-30	$48,956,903	1,888,041	0.0%	Shares	Sole	2025-11-17
2025-06-30	$48,503,773	1,888,041	+36.3%	Shares	Sole	2025-08-14
2025-03-31	$21,257,309	1,384,841	+179.3%	Shares	Sole	2025-05-15
2024-12-31	$18,275,740	495,815	-42.7%	Shares	Sole	2025-02-14
2024-09-30	$12,391,243	865,915	0.0%	Shares	Sole	2024-11-14
2024-06-30	$7,178,435	865,915	+1.9%	Shares	Sole	2024-08-14
2024-03-31	$11,775,663	849,615	-4.7%	Shares	Sole	2024-05-15
2023-12-31	$17,231,797	891,915	+90.4%	Shares	Sole	2024-02-14
2023-09-30	$5,138,512	468,415	—	Shares	Sole	2023-11-14
No filing history on record for this holder in this stock.