Squarepoint
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Squarepoint’s iRhythm Holdings IRTC Stock Holding History

Squarepoint’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
Q1 		– Sell
-5,400
Closed -$487K – 5000
2024
Q4 		$487K Buy
+5,400
New +$424K ﹤0.01% 3744
2024
Q2 		– Sell
-37,700
Closed -$4.37M – 4356
2024
Q1 		$4.37M Sell
37,700
-37,700
-50% -$4.24M 0.01% 1542
2023
Q4 		$8.07M Buy
75,400
+38,100
+102% +$3.32M 0.02% 1072
2023
Q3 		$3.52M Buy
+37,300
New +$3.79M 0.01% 1406

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

Squarepoint's IRTC Position: Q2 2026 in Review

Squarepoint increased its iRhythm Holdings (IRTC) stake by 1,066% in Q2 2026, buying an estimated $7.64M and bringing the position to 71,862 shares worth $8.55M. The position accounts for 0.01% of the portfolio, ranked #1208.

Squarepoint first reported a position in IRTC in Q2 2017 and has held it in 33 quarters since. The position peaked at $31.1M in Q3 2025. 304 funds tracked by Wall St. Rank hold IRTC as of Q2 2026.

  • Squarepoint held 71,862 shares of iRhythm Holdings worth $8.55M as of Q2 2026.
  • Squarepoint bought 65,698 iRhythm Holdings shares in Q2 2026, an estimated $7.64M.
  • iRhythm Holdings made up 0.01% of Squarepoint's portfolio in Q2 2026, its #1208 holding.
  • Squarepoint first reported a position in iRhythm Holdings in Q2 2017 and has held it in 33 quarters since.
  • Squarepoint's iRhythm Holdings position peaked at $31.1M in Q3 2025.
  • 304 funds tracked by Wall St. Rank held iRhythm Holdings as of Q2 2026.

Based on Squarepoint's 13F filing for Q2 2026, filed 14 Aug 2026.