Lazard Asset Management
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Lazard Asset Management’s iRhythm Holdings IRTC Stock Holding History

Lazard Asset Management’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
-419
Closed -$74.3K – 1977
2025
Q4 		$74.3K Hold
419
– – ﹤0.01% 1776
2025
Q3 		$72.1K Sell
419
-49
-10% -$7.79K ﹤0.01% 1721
2025
Q2 		$72K Buy
+468
New +$60.5K ﹤0.01% 1940
2023
Q4 		– Sell
-404
Closed -$38K – 2355
2023
Q3 		$38K Buy
+404
New +$41.1K ﹤0.01% 1925
2023
Q2 		– Sell
-369
Closed -$45K – 2416
2023
Q1 		$45K Buy
+369
New +$40K ﹤0.01% 1835
2021
Q4 		– Sell
-703
Closed -$41K – 2374
2021
Q3 		$41K Buy
+703
New +$37.3K ﹤0.01% 1775
2021
Q2 		– Sell
-6,360
Closed -$883K – 2010
2021
Q1 		$883K Sell
6,360
-576
-8% -$103K ﹤0.01% 908
2020
Q4 		$1.65M Sell
6,936
-3,037
-30% -$692K ﹤0.01% 827
2020
Q3 		$2.37M Sell
9,973
-1,307
-12% -$231K ﹤0.01% 706
2020
Q2 		$1.31M Sell
11,280
-2,995
-21% -$330K ﹤0.01% 728
2020
Q1 		$1.16M Hold
14,275
– – ﹤0.01% 727
2019
Q4 		$971K Sell
14,275
-500
-3% -$33.9K ﹤0.01% 752
2019
Q3 		$1.09M Hold
14,775
– – ﹤0.01% 739
2019
Q2 		$1.17M Sell
14,775
-3,900
-21% -$284K ﹤0.01% 830
2019
Q1 		$1.4M Hold
18,675
– – ﹤0.01% 797
2018
Q4 		$1.3M Hold
18,675
– – ﹤0.01% 690
2018
Q3 		$1.77M Hold
18,675
– – ﹤0.01% 673
2018
Q2 		$1.51M Hold
18,675
– – ﹤0.01% 691
2018
Q1 		$1.18M Sell
18,675
-7,800
-29% -$483K ﹤0.01% 695
2017
Q4 		$1.48M Sell
26,475
-27,300
-51% -$1.43M ﹤0.01% 661
2017
Q3 		$2.79M Sell
53,775
-13,700
-20% -$620K 0.01% 603
2017
Q2 		$2.87M Sell
67,475
-2,400
-3% -$87.4K 0.01% 589
2017
Q1 		$2.63M Sell
69,875
-1,525
-2% -$52.5K 0.01% 630
2016
Q4 		$2.14M Buy
+71,400
New +$1.92M ﹤0.01% 620

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

Lazard Asset Management's IRTC Position: Q1 2026 in Review

Lazard Asset Management sold out of iRhythm Holdings (IRTC) in Q1 2026, closing a stake of 419 shares — an estimated $74.3K sold.

Lazard Asset Management first reported a position in IRTC in Q4 2016 and held it in 24 quarters. The position peaked at $2.87M in Q2 2017. 305 funds tracked by Wall St. Rank hold IRTC as of Q1 2026.

  • Lazard Asset Management reported no remaining iRhythm Holdings position as of Q1 2026 after selling out during the quarter.
  • Lazard Asset Management sold 419 iRhythm Holdings shares in Q1 2026, an estimated $74.3K.
  • Lazard Asset Management first reported a position in iRhythm Holdings in Q4 2016 and held it in 24 quarters.
  • Lazard Asset Management's iRhythm Holdings position peaked at $2.87M in Q2 2017.
  • 305 funds tracked by Wall St. Rank held iRhythm Holdings as of Q1 2026.

Based on Lazard Asset Management's 13F filing for Q1 2026, filed 15 May 2026.