SIMPLEX TRADING, LLC

Position in QTRX — Quanterix Corp

CIK 1488542 CHICAGO, IL

Position in QTRX

as of Jun 30, 2026 · filed Aug 12, 2026 Compact

Position Value

$30,788

+$22,301 QoQ

Shares Held

7,127

+356.0% QoQ

Ownership

0.015%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

#89

of 132 holders

Holding Since

Dec 2020

12 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Healthcare · as of Jun 30, 2026

SIMPLEX TRADING, LLC holds $16,900,559 across 44 Medical Devices names. QTRX ranks #26 (0.2% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ABT	Abbott Laboratories	91,699	$8,320,767
2	TXG	10x Genomics, Inc.	51,807	$1,986,280
3	ENOV	Enovis CORP	51,073	$1,057,211
4	ZBH	Zimmer Biomet Holdings, Inc.	12,032	$1,035,834
5	DXCM	Dexcom Inc	9,225	$621,303
6	PEN	Penumbra Inc	1,843	$581,927
7	BFLY	Butterfly Network, Inc.	60,366	$508,281
8	ESTA	Establishment Labs Holdings Inc.	5,780	$495,981

12 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$30,788	7,127	+356.0%	Shares	Sole	2026-08-12
2025-09-30	$8,487	1,563	-50.4%	Shares	Sole	2025-11-12
2025-06-30	$20,960	3,152	+362.8%	Shares	Sole	2025-08-05
2023-12-31	$18,618	681	-88.4%	Shares	Sole	2024-02-02
2023-09-30	$159,121	5,863	-95.7%	Shares	Sole	2023-11-01
2022-12-31	$1,909,028	137,836	+32.6%	Shares	Sole	2023-02-02
2022-09-30	$1,145,121	103,913	+6850.7%	Shares	Sole	2022-11-04
2022-06-30	$24,204	1,495	-81.9%	Shares	Sole	2022-08-03
2021-09-30	$410,916	8,253	-15.4%	Shares	Sole	2021-10-28
2021-06-30	$572,110	9,753	+1277.5%	Shares	Sole	2021-08-12
2021-03-31	$41,396	708	+254.0%	Shares	Sole	2021-04-26
2020-12-31	$9,300	200	—	Shares	Sole	2021-02-02
No filing history on record for this holder in this stock.