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Eventide Asset Management’s iRhythm Holdings IRTC Stock Holding History

Eventide 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 		$105M Buy
880,338
+119,513
+16% +$13.9M 1.4% 13
2026
Q1 		$89.8M Buy
760,825
+68,339
+10% +$9.86M 1.48% 12
2025
Q4 		$123M Buy
692,486
+974
+0.1% +$173K 1.92% 6
2025
Q3 		$119M Sell
691,512
-61
-0% -$9.7K 1.96% 7
2025
Q2 		$106M Sell
691,573
-48,489
-7% -$6.27M 1.87% 8
2025
Q1 		$77.5M Buy
740,062
+652
+0.1% +$69.1K 1.54% 14
2024
Q4 		$66.7M Buy
739,410
+2,689
+0.4% +$211K 1.21% 25
2024
Q3 		$54.7M Buy
736,721
+464,629
+171% +$37M 0.94% 36
2024
Q2 		$29.3M Buy
272,092
+32,957
+14% +$3.37M 0.5% 65
2024
Q1 		$27.7M Hold
239,135
– – 0.44% 70
2023
Q4 		$25.6M Hold
239,135
– – 0.42% 73
2023
Q3 		$22.5M Hold
239,135
– – 0.41% 72
2023
Q2 		$24.9M Hold
239,135
– – 0.42% 72
2023
Q1 		$29.7M Hold
239,135
– – 0.54% 62
2022
Q4 		$22.4M Buy
239,135
+90,305
+61% +$9.83M 0.44% 72
2022
Q3 		$18.6M Buy
148,830
+119,530
+408% +$17.3M 0.37% 77
2022
Q2 		$3.17M Buy
+29,300
New +$3.88M 0.07% 128

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
BNP Paribas Asset Management
BNP Paribas Asset Management Paris, France $99.8B AUM 45.22% 1-Year Est. Return

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

Eventide Asset Management increased its iRhythm Holdings (IRTC) stake by 16% in Q2 2026, buying an estimated $13.9M and bringing the position to 880,338 shares worth $105M. The position accounts for 1.4% of the portfolio, ranked #13.

Eventide Asset Management first reported a position in IRTC in Q2 2022 and has held it in 17 quarters since. The position peaked at $123M in Q4 2025. 304 funds tracked by Wall St. Rank hold IRTC as of Q2 2026.

  • Eventide Asset Management held 880,338 shares of iRhythm Holdings worth $105M as of Q2 2026.
  • Eventide Asset Management bought 119,513 iRhythm Holdings shares in Q2 2026, an estimated $13.9M.
  • iRhythm Holdings made up 1.4% of Eventide Asset Management's portfolio in Q2 2026, its #13 holding.
  • Eventide Asset Management first reported a position in iRhythm Holdings in Q2 2022 and has held it in 17 quarters since.
  • Eventide Asset Management's iRhythm Holdings position peaked at $123M in Q4 2025.
  • 304 funds tracked by Wall St. Rank held iRhythm Holdings as of Q2 2026.

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