First Light Asset Management’s iRhythm Holdings IRTC Stock Holding History

First Light Asset Management’s Portfolio IRTC Stock Details IRTC Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$19.9M	Sell	167,092 -1,024	-0.6%	-$119K	1.21%	26
2026 Q1	$19.8M	Buy	168,116 +14,245	+9%	+$2.06M	1.78%	20
2025 Q4	$27.3M	Sell	153,871 -1,228	-0.8%	-$218K	2.09%	20
2025 Q3	$26.7M	Sell	155,099 -32,256	-17%	-$5.13M	2.51%	16
2025 Q2	$28.8M	Sell	187,355 -137,691	-42%	-$17.8M	3.74%	10
2025 Q1	$34M	Sell	325,046 -105,454	-24%	-$11.2M	3.89%	10
2024 Q4	$38.8M	Buy	+430,500	New	+$33.8M	3.71%	10
2024 Q2	–	Sell	-420,892	Closed	-$48.8M	–	46
2024 Q1	$48.8M	Buy	420,892 +268,829	+177%	+$30.2M	3.74%	9
2023 Q4	$16.3M	Buy	152,063 +64,024	+73%	+$5.58M	1.31%	27
2023 Q3	$8.3M	Buy	+88,039	New	+$8.95M	0.79%	36

Other funds holding IRTC

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

RTW Investments New York $11.7B AUM 174.13% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Artisan Partners Milwaukee, Wisconsin $63.1B AUM 35.51% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Millennium Management New York $276B AUM 44.8% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

UBS AM Chicago, Illinois $550B AUM 43.33% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

EAM

Eventide Asset Management Boston, Massachusetts $7.48B AUM 104.76% 1-Year Est. Return

First Light Asset Management's IRTC Position: Q2 2026 in Review

First Light Asset Management reduced its iRhythm Holdings (IRTC) stake by 0.61% in Q2 2026, selling an estimated $119K and leaving 167,092 shares worth $19.9M. The position accounts for 1.21% of the portfolio, ranked #26.

First Light Asset Management first reported a position in IRTC in Q3 2023 and has held it in 10 quarters since. The position peaked at $48.8M in Q1 2024. 303 funds tracked by Wall St. Rank hold IRTC as of Q2 2026.

First Light Asset Management held 167,092 shares of iRhythm Holdings worth $19.9M as of Q2 2026.
First Light Asset Management sold 1,024 iRhythm Holdings shares in Q2 2026, an estimated $119K.
iRhythm Holdings made up 1.21% of First Light Asset Management's portfolio in Q2 2026, its #26 holding.
First Light Asset Management first reported a position in iRhythm Holdings in Q3 2023 and has held it in 10 quarters since.
First Light Asset Management's iRhythm Holdings position peaked at $48.8M in Q1 2024.
303 funds tracked by Wall St. Rank held iRhythm Holdings as of Q2 2026.

Based on First Light Asset Management's 13F filing for Q2 2026, filed 14 Aug 2026.