Two Sigma Securities’s iRhythm Holdings IRTC Stock Holding History

Two Sigma Securities’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	$388K	Buy	3,265 +564	+21%	+$65.6K	0.03%	711
2026 Q1	$319K	Buy	+2,701	New	+$390K	0.04%	737
2025 Q4	–	Sell	-3,588	Closed	-$617K	–	1748
2025 Q3	$617K	Buy	+3,588	New	+$570K	0.09%	299
2024 Q4	–	Sell	-2,868	Closed	-$213K	–	2403
2024 Q3	$213K	Buy	+2,868	New	+$228K	﹤0.01%	2092
2020 Q4	–	Sell	-980	Closed	-$233K	–	1806
2020 Q3	$233K	Buy	+980	New	+$173K	﹤0.01%	1027

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

Two Sigma Securities's IRTC Position: Q2 2026 in Review

Two Sigma Securities increased its iRhythm Holdings (IRTC) stake by 21% in Q2 2026, buying an estimated $65.6K and bringing the position to 3,265 shares worth $388K. The position accounts for 0.03% of the portfolio, ranked #711.

Two Sigma Securities first reported a position in IRTC in Q3 2020 and has held it in 5 quarters since. The position peaked at $617K in Q3 2025. 304 funds tracked by Wall St. Rank hold IRTC as of Q2 2026.

Two Sigma Securities held 3,265 shares of iRhythm Holdings worth $388K as of Q2 2026.
Two Sigma Securities bought 564 iRhythm Holdings shares in Q2 2026, an estimated $65.6K.
iRhythm Holdings made up 0.03% of Two Sigma Securities's portfolio in Q2 2026, its #711 holding.
Two Sigma Securities first reported a position in iRhythm Holdings in Q3 2020 and has held it in 5 quarters since.
Two Sigma Securities's iRhythm Holdings position peaked at $617K in Q3 2025.
304 funds tracked by Wall St. Rank held iRhythm Holdings as of Q2 2026.

Based on Two Sigma Securities's 13F filing for Q2 2026, filed 14 Aug 2026.