OBERWEIS ASSET MANAGEMENT INC/

Position in ADPT — Adaptive Biotechnologies Corp

CIK 937886 LISLE, IL

Position in ADPT

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

Position Value

$11,200,479

-$890,201 QoQ

Shares Held

806,951

+8.4% QoQ

Ownership

0.504%

of shares outstanding

% of Portfolio

0.33%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Jun 2025

4 quarters on record

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

Healthcare · as of Mar 31, 2026

OBERWEIS ASSET MANAGEMENT INC/ holds $55,036,713 across 3 Diagnostics & Research names. ADPT ranks #3 (20.4% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	VCYT	Veracyte, Inc.	839,834	$27,051,053
2	WGS	GeneDx Holdings Corp.	261,370	$16,785,181
3	ADPT	Adaptive Biotechnologies Corp This page	806,951	$11,200,479

4 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$11,200,479	806,951	+8.4%	Shares	Sole	2026-05-15
2025-12-31	$12,090,680	744,500	+2.5%	Shares	Sole	2026-02-17
2025-09-30	$10,868,440	726,500	+23.3%	Shares	Sole	2025-11-17
2025-06-30	$6,866,510	589,400	—	Shares	Sole	2025-08-14
No filing history on record for this holder in this stock.