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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
2023
Q4 		– Sell
-2,800
Closed -$264K – 3300
2023
Q3 		$264K Buy
+2,800
New +$285K ﹤0.01% 2061

Other funds holding IRTC

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
RI
RTW Investments New York $11.7B AUM 174.13% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Artisan Partners
Artisan Partners Milwaukee, Wisconsin $63.1B AUM 35.51% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Millennium Management
Millennium Management New York $276B AUM 44.8% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
UBS AM
UBS AM Chicago, Illinois $550B AUM 43.33% 1-Year Est. Return
Geode Capital Management
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. 303 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.
  • 303 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.