Tower Research Capital LLC (TRC)

Position in RGEN — Repligen Corp

CIK 1533421 NEW YORK, NY

Position in RGEN

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

Position Value

$456,081

+$116,236 QoQ

Shares Held

3,871

+86.6% QoQ

Ownership

0.007%

of shares outstanding

% of Portfolio

0.02%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

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

Healthcare · as of Mar 31, 2026

Tower Research Capital LLC (TRC) holds $14,901,520 across 45 Medical Instruments & Supplies names. RGEN ranks #6 (3.1% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ISRG	Intuitive Surgical Inc	15,627	$7,203,890
2	ALC	Alcon Inc	20,124	$1,516,342
3	HOLX	HOLOGIC INC	11,605	$877,221
4	RMD	Resmed Inc	2,694	$604,749
5	BDX	Becton Dickinson & Co	3,781	$594,486
6	RGEN	Repligen Corp This page	3,871	$456,081
7	ATR	Aptargroup, Inc.	2,972	$374,531
8	ICUI	Icu Medical Inc/De	2,807	$362,523

25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$456,081	3,871	+86.6%	Shares	Other	2026-05-15
2025-12-31	$339,845	2,074	+42.8%	Shares	Defined	2026-02-17
2025-09-30	$194,088	1,452	+0.3%	Shares	Defined	2025-11-14
2025-06-30	$180,102	1,448	+14.1%	Shares	Defined	2025-08-15
2025-03-31	$161,467	1,269	-81.1%	Shares	Defined	2025-05-15
2024-12-31	$966,988	6,718	+89.2%	Shares	Other	2025-02-13
2024-09-30	$528,459	3,551	-10.9%	Shares	Defined	2024-11-14
2024-06-30	$502,222	3,984	+55.1%	Shares	Other	2024-08-13
2024-03-31	$472,306	2,568	-56.3%	Shares	Defined	2024-05-15
2023-12-31	$1,057,763	5,883	-38.4%	Shares	Other	2024-02-13
2023-09-30	$1,519,817	9,558	+25.2%	Shares	Other	2023-11-14
2023-06-30	$1,080,046	7,635	+74.3%	Shares	Defined	2023-08-14
2023-03-31	$737,416	4,380	+80.9%	Shares	Defined	2023-05-09
2022-12-31	$409,898	2,421	+33.8%	Shares	Other	2023-02-10
2022-09-30	$338,668	1,810	-69.5%	Shares	Other	2022-11-10
2022-06-30	$964,006	5,936	+10.8%	Shares	Other	2022-08-15
2022-03-31	$1,007,221	5,355	+13.8%	Shares	Other	2022-05-12
2021-12-31	$1,246,601	4,707	+73.4%	Shares	Other	2022-02-14
2021-09-30	$784,606	2,715	-45.1%	Shares	Other	2021-11-15
2021-06-30	$987,919	4,949	+34.5%	Shares	Other	2021-08-16
2021-03-31	$715,234	3,679	-79.7%	Shares	Defined	2021-05-17
2020-12-31	$3,477,891	18,149	-1.4%	Shares	Other	2021-02-16
2020-09-30	$2,715,768	18,407	-13.7%	Shares	Defined	2020-11-16
2020-06-30	$2,635,982	21,325	+13482.8%	Shares	Other	2020-08-13
2020-03-31	$15,156	157	—	Shares	Defined	2020-05-15
No filing history on record for this holder in this stock.