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Great Lakes Advisors’s iRhythm Holdings IRTC Stock Holding History

Great Lakes Advisors’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
Q1 		– Sell
-1,566
Closed -$278K – 834
2025
Q4 		$278K Buy
+1,566
New +$278K ﹤0.01% 710
2024
Q2 		– Sell
-2,729
Closed -$317K – 866
2024
Q1 		$317K Buy
+2,729
New +$307K ﹤0.01% 682
2021
Q2 		– Sell
-4,260
Closed -$592K – 727
2021
Q1 		$592K Sell
4,260
-112,100
-96% -$20.1M 0.01% 496
2020
Q4 		$27.6M Sell
116,360
-5,173
-4% -$1.18M 0.5% 51
2020
Q3 		$28.9M Sell
121,533
-27,627
-19% -$4.89M 0.61% 42
2020
Q2 		$17.3M Sell
149,160
-13,467
-8% -$1.48M 0.42% 73
2020
Q1 		$13.2M Buy
162,627
+89,656
+123% +$7.43M 0.39% 70
2019
Q4 		$4.97M Buy
72,971
+933
+1% +$63.3K 0.11% 220
2019
Q3 		$5.34M Buy
72,038
+799
+1% +$61.9K 0.12% 202
2019
Q2 		$5.63M Buy
71,239
+4,118
+6% +$300K 0.12% 180
2019
Q1 		$5.03M Sell
67,121
-8,372
-11% -$716K 0.11% 200
2018
Q4 		$5.25M Buy
+75,493
New +$5.72M 0.12% 181

Other funds holding IRTC

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
RI
RTW Investments New York $11.7B AUM 174.13% 1-Year Est. Return
Millennium Management
Millennium Management New York $276B AUM 44.8% 1-Year Est. Return
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
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Holocene Advisors
Holocene Advisors New York $44.4B AUM 57.89% 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

Great Lakes Advisors's IRTC Position: Q1 2026 in Review

Great Lakes Advisors sold out of iRhythm Holdings (IRTC) in Q1 2026, closing a stake of 1,566 shares — an estimated $278K sold.

Great Lakes Advisors first reported a position in IRTC in Q4 2018 and held it in 12 quarters. The position peaked at $28.9M in Q3 2020. 305 funds tracked by Wall St. Rank hold IRTC as of Q1 2026.

  • Great Lakes Advisors reported no remaining iRhythm Holdings position as of Q1 2026 after selling out during the quarter.
  • Great Lakes Advisors sold 1,566 iRhythm Holdings shares in Q1 2026, an estimated $278K.
  • Great Lakes Advisors first reported a position in iRhythm Holdings in Q4 2018 and held it in 12 quarters.
  • Great Lakes Advisors's iRhythm Holdings position peaked at $28.9M in Q3 2020.
  • 305 funds tracked by Wall St. Rank held iRhythm Holdings as of Q1 2026.

Based on Great Lakes Advisors's 13F filing for Q1 2026, filed 12 May 2026.