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Sectoral Asset Management’s iRhythm Holdings IRTC Stock Holding History

Sectoral 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
Q2 		$3.1M Buy
+26,070
New +$3.03M 2.16% 13
2023
Q4 		– Sell
-33,000
Closed -$3.11M – 114
2023
Q3 		$3.11M Buy
33,000
+3,000
+10% +$305K 0.61% 69
2023
Q2 		$3.13M Sell
30,000
-29,136
-49% -$3.5M 0.52% 73
2023
Q1 		$7.33M Sell
59,136
-37,000
-38% -$4.01M 1.41% 23
2022
Q4 		$9.01M Sell
96,136
-6,775
-7% -$737K 1.74% 12
2022
Q3 		$12.9M Buy
102,911
+27,911
+37% +$4.03M 2.54% 6
2022
Q2 		$8.1M Buy
75,000
+46,200
+160% +$6.12M 1.63% 18
2022
Q1 		$4.54M Buy
+28,800
New +$3.7M 0.81% 51
2021
Q1 		– Sell
-106,565
Closed -$25.3M – 123
2020
Q4 		$25.3M Buy
106,565
+3,000
+3% +$684K 1.78% 20
2020
Q3 		$24.7M Sell
103,565
-12,330
-11% -$2.18M 2.12% 15
2020
Q2 		$13.4M Buy
115,895
+25,670
+28% +$2.83M 1.23% 38
2020
Q1 		$7.34M Sell
90,225
-47,275
-34% -$3.92M 1.41% 31
2019
Q4 		$9.36M Sell
137,500
-50,250
-27% -$3.41M 1.4% 32
2019
Q3 		$13.9M Buy
187,750
+101,150
+117% +$7.84M 2.4% 13
2019
Q2 		$6.85M Buy
86,600
+4,000
+5% +$291K 0.82% 46
2019
Q1 		$6.19M Sell
82,600
-14,800
-15% -$1.26M 0.74% 49
2018
Q4 		$6.77M Sell
97,400
-47,300
-33% -$3.59M 0.92% 41
2018
Q3 		$13.7M Hold
144,700
– – 1.45% 25
2018
Q2 		$11.7M Sell
144,700
-12,900
-8% -$902K 1.31% 30
2018
Q1 		$9.92M Sell
157,600
-37,200
-19% -$2.3M 1.09% 35
2017
Q4 		$10.9M Buy
194,800
+9,600
+5% +$502K 1.36% 29
2017
Q3 		$9.61M Buy
185,200
+30
+0% +$1.36K 1.24% 33
2017
Q2 		$7.87M Buy
+185,170
New +$6.74M 0.86% 37

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

Sectoral Asset Management's IRTC Position: Q2 2026 in Review

Sectoral Asset Management opened a new position in iRhythm Holdings (IRTC) in Q2 2026: 26,070 shares worth $3.1M. The stake represents 2.16% of the portfolio and ranks #13 among its holdings. This is a return to the name: Sectoral Asset Management previously reported a position in IRTC as recently as Q3 2023.

Sectoral Asset Management first reported a position in IRTC in Q2 2017 and has held it in 23 quarters since. The position peaked at $25.3M in Q4 2020. 304 funds tracked by Wall St. Rank hold IRTC as of Q2 2026.

  • Sectoral Asset Management held 26,070 shares of iRhythm Holdings worth $3.1M as of Q2 2026.
  • iRhythm Holdings was a new Sectoral Asset Management position in Q2 2026.
  • iRhythm Holdings made up 2.16% of Sectoral Asset Management's portfolio in Q2 2026, its #13 holding.
  • Sectoral Asset Management first reported a position in iRhythm Holdings in Q2 2017 and has held it in 23 quarters since.
  • Sectoral Asset Management's iRhythm Holdings position peaked at $25.3M in Q4 2020.
  • 304 funds tracked by Wall St. Rank held iRhythm Holdings as of Q2 2026.

Based on Sectoral Asset Management's 13F filing for Q2 2026, filed 14 Aug 2026.