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

Acadian 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 		– Sell
-2,407
Closed -$284K – 2103
2026
Q1 		$284K Sell
2,407
-1,627
-40% -$235K ﹤0.01% 1492
2025
Q4 		$714K Buy
+4,034
New +$715K ﹤0.01% 1208
2024
Q4 		– Sell
-2,041
Closed -$151K – 1888
2024
Q3 		$151K Buy
+2,041
New +$163K ﹤0.01% 1463
2021
Q4 		– Sell
-676
Closed -$39K – 1764
2021
Q3 		$39K Buy
+676
New +$35.8K ﹤0.01% 1583

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

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

Acadian Asset Management sold out of iRhythm Holdings (IRTC) in Q2 2026, closing a stake of 2,407 shares — an estimated $284K sold.

Acadian Asset Management first reported a position in IRTC in Q3 2021 and held it in 4 quarters. The position peaked at $714K in Q4 2025. 304 funds tracked by Wall St. Rank hold IRTC as of Q2 2026.

  • Acadian Asset Management reported no remaining iRhythm Holdings position as of Q2 2026 after selling out during the quarter.
  • Acadian Asset Management sold 2,407 iRhythm Holdings shares in Q2 2026, an estimated $284K.
  • Acadian Asset Management first reported a position in iRhythm Holdings in Q3 2021 and held it in 4 quarters.
  • Acadian Asset Management's iRhythm Holdings position peaked at $714K in Q4 2025.
  • 304 funds tracked by Wall St. Rank held iRhythm Holdings as of Q2 2026.

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