Quadrature Capital
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Quadrature Capital’s iRhythm Holdings IRTC Stock Holding History

Quadrature Capital’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
2025
Q4 		– Sell
-1,406
Closed -$242K – 1459
2025
Q3 		$242K Sell
1,406
-954
-40% -$152K ﹤0.01% 726
2025
Q2 		$363K Buy
+2,360
New +$305K 0.01% 646

Other funds holding IRTC

Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Sands Capital Management
Sands Capital Management Arlington, Virginia $26.9B AUM 34.44% 1-Year Est. Return
Artisan Partners
Artisan Partners Milwaukee, Wisconsin $63.1B AUM 35.51% 1-Year Est. Return
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $717B AUM 35.42% 1-Year Est. Return
RTW Investments
RTW Investments New York $11.7B AUM 174.13% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
UBS AM
UBS AM Chicago, Illinois $550B AUM 43.33% 1-Year Est. Return
Millennium Management
Millennium Management New York $276B AUM 44.8% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return

Quadrature Capital's IRTC Position: Q4 2025 in Review

Quadrature Capital sold out of iRhythm Holdings (IRTC) in Q4 2025, closing a stake of 1,406 shares — an estimated $242K sold.

Quadrature Capital first reported a position in IRTC in Q2 2025 and held it in 2 quarters. The position peaked at $363K in Q2 2025. 334 funds tracked by Wall St. Rank hold IRTC as of Q4 2025.

  • Quadrature Capital reported no remaining iRhythm Holdings position as of Q4 2025 after selling out during the quarter.
  • Quadrature Capital sold 1,406 iRhythm Holdings shares in Q4 2025, an estimated $242K.
  • Quadrature Capital first reported a position in iRhythm Holdings in Q2 2025 and held it in 2 quarters.
  • Quadrature Capital's iRhythm Holdings position peaked at $363K in Q2 2025.
  • 334 funds tracked by Wall St. Rank held iRhythm Holdings as of Q4 2025.

Based on Quadrature Capital's 13F filing for Q4 2025, filed 17 Feb 2026.