PA
IRTC icon

Perceptive Advisors’s iRhythm Holdings IRTC Stock Holding History

Perceptive 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
Q2 		$26.6M Buy
223,766
+118,740
+113% +$13.8M 0.4% 50
2026
Q1 		$12.4M Sell
105,026
-2,974
-3% -$429K 0.24% 62
2025
Q4 		$19.2M Sell
108,000
-15,000
-12% -$2.66M 0.34% 64
2025
Q3 		$21.2M Buy
+123,000
New +$19.6M 0.61% 43
2025
Q1 		– Sell
-65,153
Closed -$5.87M – 97
2024
Q4 		$5.87M Buy
65,153
+42,562
+188% +$3.34M 0.16% 69
2024
Q3 		$1.68M Sell
22,591
-12,614
-36% -$1M 0.04% 96
2024
Q2 		$3.79M Sell
35,205
-210,000
-86% -$21.5M 0.09% 85
2024
Q1 		$28.4M Buy
+245,205
New +$27.6M 0.5% 57
2019
Q2 		– Sell
-200,000
Closed -$15M – 113
2019
Q1 		$15M Buy
+200,000
New +$17.1M 0.42% 45
2018
Q4 		– Sell
-168,939
Closed -$16M – 112
2018
Q3 		$16M Sell
168,939
-139,067
-45% -$12.1M 0.43% 46
2018
Q2 		$25M Sell
308,006
-111,700
-27% -$7.81M 0.66% 42
2018
Q1 		$26.4M Sell
419,706
-7,665
-2% -$475K 0.74% 32
2017
Q4 		$24M Buy
427,371
+54,700
+15% +$2.86M 0.79% 34
2017
Q3 		$19.3M Buy
372,671
+89,814
+32% +$4.07M 0.74% 32
2017
Q2 		$12M Buy
282,857
+11,800
+4% +$430K 0.6% 46
2017
Q1 		$10.2M Sell
271,057
-81,184
-23% -$2.79M 0.58% 41
2016
Q4 		$10.6M Buy
+352,241
New +$9.49M 0.75% 31

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

Perceptive Advisors's IRTC Position: Q2 2026 in Review

Perceptive Advisors increased its iRhythm Holdings (IRTC) stake by 113% in Q2 2026, buying an estimated $13.8M and bringing the position to 223,766 shares worth $26.6M. The position accounts for 0.4% of the portfolio, ranked #50.

Perceptive Advisors first reported a position in IRTC in Q4 2016 and has held it in 17 quarters since. The position peaked at $28.4M in Q1 2024. 304 funds tracked by Wall St. Rank hold IRTC as of Q2 2026.

  • Perceptive Advisors held 223,766 shares of iRhythm Holdings worth $26.6M as of Q2 2026.
  • Perceptive Advisors bought 118,740 iRhythm Holdings shares in Q2 2026, an estimated $13.8M.
  • iRhythm Holdings made up 0.4% of Perceptive Advisors's portfolio in Q2 2026, its #50 holding.
  • Perceptive Advisors first reported a position in iRhythm Holdings in Q4 2016 and has held it in 17 quarters since.
  • Perceptive Advisors's iRhythm Holdings position peaked at $28.4M in Q1 2024.
  • 304 funds tracked by Wall St. Rank held iRhythm Holdings as of Q2 2026.

Based on Perceptive Advisors's 13F filing for Q2 2026, filed 14 Aug 2026.