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 $5.72T AUM 30.48% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
RI
RTW Investments New York $10B AUM 135.35% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
Artisan Partners
Artisan Partners Milwaukee, Wisconsin $62.3B AUM 26.25% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Holocene Advisors
Holocene Advisors New York $41.5B AUM 42.97% 1-Year Est. Return
UBS AM
UBS AM Chicago, Illinois $481B AUM 26.39% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Squarepoint's IRTC Position: Q1 2026 in Review

Squarepoint reduced its iRhythm Holdings (IRTC) stake by 93% in Q1 2026, selling an estimated $12.6M and leaving 6,164 shares worth $727K. The position accounts for ﹤0.01% of the portfolio, ranked #3040.

Squarepoint first reported a position in IRTC in Q2 2017 and has held it in 32 quarters since. The position peaked at $31.1M in Q3 2025. 304 funds tracked by Wall St. Rank hold IRTC as of Q1 2026.

  • Squarepoint held 6,164 shares of iRhythm Holdings worth $727K as of Q1 2026.
  • Squarepoint sold 87,544 iRhythm Holdings shares in Q1 2026, an estimated $12.6M.
  • iRhythm Holdings made up ﹤0.01% of Squarepoint's portfolio in Q1 2026, its #3040 holding.
  • Squarepoint first reported a position in iRhythm Holdings in Q2 2017 and has held it in 32 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 Q1 2026.

Based on Squarepoint's 13F filing for Q1 2026, filed 15 May 2026.