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Quantbot Technologies’s iRhythm Holdings IRTC Stock Holding History

Quantbot Technologies’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 		$27.2K Buy
+229
New +$26.6K ﹤0.01% 1739
2026
Q1 		– Sell
-6,646
Closed -$1.18M – 1925
2025
Q4 		$1.18M Sell
6,646
-1,739
-21% -$308K 0.04% 633
2025
Q3 		$1.44M Sell
8,385
-14,857
-64% -$2.36M 0.04% 651
2025
Q2 		$3.58M Buy
+23,242
New +$3M 0.09% 316
2023
Q3 		– Sell
-19,754
Closed -$2.06M – 1750
2023
Q2 		$2.06M Buy
+19,754
New +$2.37M 0.13% 224
2021
Q4 		– Sell
-9,740
Closed -$570K – 1697
2021
Q3 		$570K Sell
9,740
-11,462
-54% -$607K 0.04% 558
2021
Q2 		$1.41M Buy
21,202
+15,974
+306% +$1.27M 0.11% 264
2021
Q1 		$725K Buy
5,228
+3,163
+153% +$567K 0.07% 372
2020
Q4 		$489K Buy
+2,065
New +$471K 0.05% 434
2020
Q3 		– Sell
-838
Closed -$97K – 1461
2020
Q2 		$97K Buy
838
+827
+7,518% +$91.2K 0.01% 596
2020
Q1 		$0 Sell
11
-12,892
-100% -$1.07M ﹤0.01% 1131
2019
Q4 		$878K Sell
12,903
-599
-4% -$40.6K 0.09% 273
2019
Q3 		$1M Buy
13,502
+237
+2% +$18.4K 0.1% 249
2019
Q2 		$1.05M Buy
13,265
+6,398
+93% +$466K 0.1% 229
2019
Q1 		$514K Sell
6,867
-1,533
-18% -$131K 0.05% 432
2018
Q4 		$583K Sell
8,400
-209
-2% -$15.8K 0.06% 407
2018
Q3 		$814K Buy
8,609
+2,641
+44% +$230K 0.06% 433
2018
Q2 		$484K Buy
5,968
+5,684
+2,001% +$397K 0.03% 579
2018
Q1 		$17K Sell
284
-8,315
-97% -$515K ﹤0.01% 1079
2017
Q4 		$481K Buy
+8,599
New +$449K 0.04% 511

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

Quantbot Technologies's IRTC Position: Q2 2026 in Review

Quantbot Technologies opened a new position in iRhythm Holdings (IRTC) in Q2 2026: 229 shares worth $27.2K. The stake represents ﹤0.01% of the portfolio and ranks #1739 among its holdings. This is a return to the name: Quantbot Technologies previously reported a position in IRTC as recently as Q4 2025.

Quantbot Technologies first reported a position in IRTC in Q4 2017 and has held it in 20 quarters since. The position peaked at $3.58M in Q2 2025. 304 funds tracked by Wall St. Rank hold IRTC as of Q2 2026.

  • Quantbot Technologies held 229 shares of iRhythm Holdings worth $27.2K as of Q2 2026.
  • iRhythm Holdings was a new Quantbot Technologies position in Q2 2026.
  • iRhythm Holdings made up ﹤0.01% of Quantbot Technologies's portfolio in Q2 2026, its #1739 holding.
  • Quantbot Technologies first reported a position in iRhythm Holdings in Q4 2017 and has held it in 20 quarters since.
  • Quantbot Technologies's iRhythm Holdings position peaked at $3.58M in Q2 2025.
  • 304 funds tracked by Wall St. Rank held iRhythm Holdings as of Q2 2026.

Based on Quantbot Technologies's 13F filing for Q2 2026, filed 12 Aug 2026.