Hudson Bay Capital Management LP

Position in RGEN — Repligen Corp

CIK 1393825 STAMFORD, CT

Position in RGEN

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

Position Value

$8,186,400

-$2,711,950 QoQ

Shares Held

60,000

-35.1% QoQ

Ownership

0.106%

of shares outstanding

% of Portfolio

0.04%

of 13F equity value

Holder Rank

#109

of 480 holders

Holding Since

Mar 2022

10 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Healthcare · as of Jun 30, 2026

Hudson Bay Capital Management LP holds $147,764,299 across 4 Medical Instruments & Supplies names. RGEN ranks #3 (5.5% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ISRG	Intuitive Surgical Inc	327,000	$130,041,360
2	BDX	Becton Dickinson & Co	55,000	$8,323,150
3	RGEN	Repligen Corp This page	60,000	$8,186,400
4	NYXH	Nyxoah SA	717,982	$1,213,389

10 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$8,186,400	60,000	-35.1%	Shares	Sole	2026-08-14
2026-03-31	$10,898,350	92,500	+362.5%	Shares	Sole	2026-05-13
2025-12-31	$3,277,200	20,000	-4.8%	Shares	Sole	2026-02-13
2025-09-30	$2,807,471	21,003	-47.5%	Shares	Sole	2025-12-15
2024-09-30	$5,952,800	40,000	-27.3%	Shares	Sole	2024-11-13
2024-06-30	$6,933,300	55,000	+175.0%	Shares	Sole	2024-08-14
2023-06-30	$2,829,200	20,000	-27.3%	Shares	Sole	2023-08-14
2022-12-31	$4,656,025	27,500	-15.4%	Shares	Sole	2023-02-14
2022-06-30	$5,278,000	32,500	+18.2%	Shares	Sole	2022-08-12
2022-03-31	$5,172,475	27,500	—	Shares	Sole	2022-05-16
No filing history on record for this holder in this stock.