SIMPLEX TRADING, LLC

Position in RGEN — Repligen Corp

CIK 1488542 CHICAGO, IL

Position in RGEN

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

Position Value

$1,339,840

+$1,233,449 QoQ

Shares Held

9,820

+987.5% QoQ

Ownership

0.017%

of shares outstanding

% of Portfolio

0.04%

of 13F equity value

Holder Rank

#214

of 480 holders

Holding Since

Jun 2020

12 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Healthcare · as of Jun 30, 2026

SIMPLEX TRADING, LLC holds $12,800,862 across 24 Medical Instruments & Supplies names. RGEN ranks #4 (10.5% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ALGN	Align Technology Inc	16,354	$2,758,265
2	RMD	Resmed Inc	14,089	$2,745,664
3	ISRG	Intuitive Surgical Inc	6,086	$2,420,280
4	RGEN	Repligen Corp This page	9,820	$1,339,840
5	SOLV	Solventum Corp	12,762	$984,588
6	WRBY	Warby Parker Inc.	16,579	$503,006
7	ALC	Alcon Inc	7,266	$487,548
8	XRAY	DENTSPLY SIRONA Inc.	44,368	$470,744

12 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$1,339,840	9,820	+987.5%	Shares	Sole	2026-08-12
2026-03-31	$106,391	903	-69.3%	Shares	Sole	2026-05-14
2025-09-30	$393,390	2,943	-16.0%	Shares	Sole	2025-11-12
2025-03-31	$445,848	3,504	+6.8%	Shares	Sole	2025-05-12
2024-12-31	$472,267	3,281	-21.1%	Shares	Sole	2025-02-11
2024-09-30	$618,644	4,157	-40.8%	Shares	Sole	2024-11-08
2024-06-30	$885,067	7,021	+188.6%	Shares	Sole	2024-07-25
2023-09-30	$386,871	2,433	-10.7%	Shares	Sole	2023-11-01
2023-06-30	$385,619	2,726	+0.7%	Shares	Sole	2023-08-04
2020-12-31	$518,742	2,707	+331.7%	Shares	Sole	2021-02-02
2020-09-30	$92,507	627	-77.9%	Shares	Sole	2020-10-14
2020-06-30	$351,299	2,842	—	Shares	Sole	2020-07-13
No filing history on record for this holder in this stock.