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David Shaw’s iRhythm Holdings IRTC Stock Holding History

David Shaw’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 		$476K Sell
4,000
-6,100
-60% -$709K ﹤0.01% 4208
2026
Q1 		$1.19M Buy
+10,100
New +$1.46M ﹤0.01% 3313
2025
Q1 		– Sell
-10,300
Closed -$929K – 4479
2024
Q4 		$929K Buy
10,300
+6,600
+178% +$519K ﹤0.01% 3245
2024
Q3 		$275K Buy
+3,700
New +$295K ﹤0.01% 4018
2021
Q4 		– Sell
-35,500
Closed -$2.08M – 5540
2021
Q3 		$2.08M Buy
+35,500
New +$1.88M ﹤0.01% 3001
2018
Q1 		– Sell
-4,900
Closed -$275K – 3626
2017
Q4 		$275K Buy
+4,900
New +$256K ﹤0.01% 3276

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

David Shaw's IRTC Position: Q2 2026 in Review

David Shaw increased its iRhythm Holdings (IRTC) stake by 14% in Q2 2026, buying an estimated $8.77M and bringing the position to 629,686 shares worth $74.9M. The position accounts for 0.04% of the portfolio, ranked #567.

David Shaw first reported a position in IRTC in Q2 2017 and has held it in 32 quarters since. 301 funds tracked by Wall St. Rank hold IRTC as of Q2 2026.

  • David Shaw held 629,686 shares of iRhythm Holdings worth $74.9M as of Q2 2026.
  • David Shaw bought 75,420 iRhythm Holdings shares in Q2 2026, an estimated $8.77M.
  • iRhythm Holdings made up 0.04% of David Shaw's portfolio in Q2 2026, its #567 holding.
  • David Shaw first reported a position in iRhythm Holdings in Q2 2017 and has held it in 32 quarters since.
  • 301 funds tracked by Wall St. Rank held iRhythm Holdings as of Q2 2026.

Based on D.E. Shaw & Co's 13F filing for Q2 2026, filed 14 Aug 2026.