Holocene Advisors, LP

Position in IRTC — iRhythm Holdings, Inc.

CIK 1700574 New York, NY

Position in IRTC

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

Position Value

$147,366,617

+$26,074,312 QoQ

Shares Held

1,248,658

+82.7% QoQ

Ownership

3.80%

of shares outstanding

% of Portfolio

0.36%

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

Holocene Advisors, LP holds $844,866,051 across 15 Medical Devices names. IRTC ranks #3 (17.4% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	BSX	Boston Scientific Corp	3,428,736	$215,153,184
2	GKOS	GLAUKOS Corp	1,383,715	$148,970,756
3	IRTC	iRhythm Holdings, Inc. This page	1,248,658	$147,366,617
4	ABT	Abbott Laboratories	790,916	$81,203,345
5	GMED	Globus Medical Inc	773,834	$66,673,537
6	EW	Edwards Lifesciences Corp	738,099	$59,106,967
7	ZBH	Zimmer Biomet Holdings, Inc.	593,705	$53,682,806
8	PEN	Penumbra Inc	110,614	$36,322,319

25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$147,366,617	1,248,658	+82.7%	Shares	Sole	2026-05-15
2025-12-31	$121,292,305	683,568	+44.4%	Shares	Sole	2026-02-17
2025-09-30	$81,399,427	473,280	+51.2%	Shares	Sole	2025-11-14
2025-06-30	$48,203,952	313,094	+2023.1%	Shares	Sole	2025-08-14
2025-03-31	$1,543,715	14,747	-82.8%	Shares	Sole	2025-05-15
2024-12-31	$7,741,365	85,853	-52.6%	Shares	Sole	2025-02-14
2024-09-30	$13,436,326	180,985	-82.6%	Shares	Sole	2024-11-14
2024-06-30	$112,232,998	1,042,670	+13.5%	Shares	Sole	2024-08-14
2024-03-31	$106,563,284	918,649	-4.6%	Shares	Sole	2024-05-15
2023-12-31	$103,118,696	963,366	+52.3%	Shares	Sole	2024-02-14
2023-09-30	$59,619,167	632,497	+48.0%	Shares	Sole	2023-11-14
2023-06-30	$44,581,777	427,356	-11.4%	Shares	Sole	2023-08-14
2023-03-31	$59,835,420	482,427	-36.6%	Shares	Sole	2023-05-15
2022-12-31	$71,230,602	760,442	-22.1%	Shares	Sole	2023-02-14
2022-09-30	$122,369,369	976,767	+7.1%	Shares	Sole	2022-11-14
2022-06-30	$98,515,041	911,923	+21.3%	Shares	Sole	2022-08-15
2022-03-31	$118,339,964	751,508	+19.0%	Shares	Sole	2022-05-16
2021-12-31	$74,309,230	631,398	+68.2%	Shares	Sole	2022-02-14
2021-09-30	$21,987,757	375,474	+402.9%	Shares	Sole	2021-11-15
2021-06-30	$4,954,089	74,666	+180.6%	Shares	Sole	2021-08-16
2021-03-31	$3,695,064	26,610	-84.2%	Shares	Sole	2021-05-17
2020-12-31	$39,917,461	168,279	-67.2%	Shares	Sole	2021-02-16
2020-09-30	$122,127,333	512,903	+10775.8%	Shares	Sole	2020-11-16
2020-06-30	$546,537	4,716	-98.9%	Shares	Sole	2020-08-14
2020-03-31	$34,146,662	419,750	—	Shares	Sole	2020-05-15
No filing history on record for this holder in this stock.