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Sirios Capital Management’s iRhythm Holdings IRTC Stock Holding History

Sirios Capital 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 		$4.1M Sell
34,455
-289
-0.8% -$33.6K 0.5% 46
2026
Q1 		$4.1M Buy
+34,744
New +$5.01M 0.5% 45

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

Sirios Capital Management's IRTC Position: Q2 2026 in Review

Sirios Capital Management reduced its iRhythm Holdings (IRTC) stake by 0.83% in Q2 2026, selling an estimated $33.6K and leaving 34,455 shares worth $4.1M. The position accounts for 0.5% of the portfolio, ranked #46.

Sirios Capital Management first reported a position in IRTC in Q1 2026 and has held it in 2 quarters since. The position peaked at $4.1M in Q1 2026. 304 funds tracked by Wall St. Rank hold IRTC as of Q2 2026.

  • Sirios Capital Management held 34,455 shares of iRhythm Holdings worth $4.1M as of Q2 2026.
  • Sirios Capital Management sold 289 iRhythm Holdings shares in Q2 2026, an estimated $33.6K.
  • iRhythm Holdings made up 0.5% of Sirios Capital Management's portfolio in Q2 2026, its #46 holding.
  • Sirios Capital Management first reported a position in iRhythm Holdings in Q1 2026 and has held it in 2 quarters since.
  • Sirios Capital Management's iRhythm Holdings position peaked at $4.1M in Q1 2026.
  • 304 funds tracked by Wall St. Rank held iRhythm Holdings as of Q2 2026.

Based on Sirios Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.