Qube Research & Technologies (QRT)
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Qube Research & Technologies (QRT)’s iRhythm Holdings IRTC Stock Holding History

Qube Research & Technologies (QRT)’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 		$32.3M Buy
271,624
+44,740
+20% +$5.2M 0.03% 677
2026
Q1 		$26.8M Buy
226,884
+82,270
+57% +$11.9M 0.03% 709
2025
Q4 		$25.7M Sell
144,614
-22,248
-13% -$3.94M 0.03% 787
2025
Q3 		$28.7M Buy
166,862
+119,437
+252% +$19M 0.03% 716
2025
Q2 		$7.3M Buy
+47,425
New +$6.13M 0.01% 1481
2025
Q1 		– Sell
-6,159
Closed -$555K – 3681
2024
Q4 		$555K Sell
6,159
-4,824
-44% -$379K ﹤0.01% 2419
2024
Q3 		$815K Buy
+10,983
New +$875K ﹤0.01% 2102
2023
Q1 		– Sell
-11,170
Closed -$1.05M – 2777
2022
Q4 		$1.05M Sell
11,170
-10,071
-47% -$1.1M 0.01% 1211
2022
Q3 		$2.66M Buy
+21,241
New +$3.07M 0.02% 817
2021
Q3 		– Sell
-27,590
Closed -$1.83M – 2482
2021
Q2 		$1.83M Buy
27,590
+9,322
+51% +$739K 0.02% 733
2021
Q1 		$2.54M Buy
+18,268
New +$3.27M 0.04% 554
2020
Q4 		– Sell
-1,282
Closed -$305K – 2000
2020
Q3 		$305K Sell
1,282
-1,284
-50% -$227K ﹤0.01% 1240
2020
Q2 		$297K Buy
+2,566
New +$283K ﹤0.01% 1303

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

Qube Research & Technologies (QRT)'s IRTC Position: Q2 2026 in Review

Qube Research & Technologies (QRT) increased its iRhythm Holdings (IRTC) stake by 20% in Q2 2026, buying an estimated $5.2M and bringing the position to 271,624 shares worth $32.3M. The position accounts for 0.03% of the portfolio, ranked #677.

Qube Research & Technologies (QRT) first reported a position in IRTC in Q2 2020 and has held it in 13 quarters since. 304 funds tracked by Wall St. Rank hold IRTC as of Q2 2026.

  • Qube Research & Technologies (QRT) held 271,624 shares of iRhythm Holdings worth $32.3M as of Q2 2026.
  • Qube Research & Technologies (QRT) bought 44,740 iRhythm Holdings shares in Q2 2026, an estimated $5.2M.
  • iRhythm Holdings made up 0.03% of Qube Research & Technologies (QRT)'s portfolio in Q2 2026, its #677 holding.
  • Qube Research & Technologies (QRT) first reported a position in iRhythm Holdings in Q2 2020 and has held it in 13 quarters since.
  • 304 funds tracked by Wall St. Rank held iRhythm Holdings as of Q2 2026.

Based on Qube Research & Technologies (QRT)'s 13F filing for Q2 2026, filed 14 Aug 2026.