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Brown Brothers Harriman & Co’s iRhythm Holdings IRTC Stock Holding History

Brown Brothers Harriman & Co’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 		$2.74K Sell
23
-14
-38% -$1.63K ﹤0.01% 1685
2026
Q1 		$4.37K Buy
37
+14
+61% +$2.02K ﹤0.01% 1533
2025
Q4 		$4.08K Hold
23
– – ﹤0.01% 1565
2025
Q3 		$3.96K Hold
23
– – ﹤0.01% 1467
2025
Q2 		$3.54K Buy
+23
New +$2.97K ﹤0.01% 1324

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

Brown Brothers Harriman & Co's IRTC Position: Q2 2026 in Review

Brown Brothers Harriman & Co reduced its iRhythm Holdings (IRTC) stake by 38% in Q2 2026, selling an estimated $1.63K and leaving 23 shares worth $2.74K. The position accounts for ﹤0.01% of the portfolio, ranked #1685.

Brown Brothers Harriman & Co first reported a position in IRTC in Q2 2025 and has held it in 5 quarters since. The position peaked at $4.37K in Q1 2026. 304 funds tracked by Wall St. Rank hold IRTC as of Q2 2026.

  • Brown Brothers Harriman & Co held 23 shares of iRhythm Holdings worth $2.74K as of Q2 2026.
  • Brown Brothers Harriman & Co sold 14 iRhythm Holdings shares in Q2 2026, an estimated $1.63K.
  • iRhythm Holdings made up ﹤0.01% of Brown Brothers Harriman & Co's portfolio in Q2 2026, its #1685 holding.
  • Brown Brothers Harriman & Co first reported a position in iRhythm Holdings in Q2 2025 and has held it in 5 quarters since.
  • Brown Brothers Harriman & Co's iRhythm Holdings position peaked at $4.37K in Q1 2026.
  • 304 funds tracked by Wall St. Rank held iRhythm Holdings as of Q2 2026.

Based on Brown Brothers Harriman & Co's 13F filing for Q2 2026, filed 12 Aug 2026.