Vanguard Portfolio Management
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Vanguard Portfolio Management’s iRhythm Holdings IRTC Stock Holding History

Vanguard Portfolio 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 		$228M Buy
1,913,976
+117,604
+7% +$13.7M 0.01% 1139
2026
Q1 		$212M Buy
+1,796,372
New +$259M 0.01% 1112

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

Vanguard Portfolio Management's IRTC Position: Q2 2026 in Review

Vanguard Portfolio Management increased its iRhythm Holdings (IRTC) stake by 6.5% in Q2 2026, buying an estimated $13.7M and bringing the position to 1,913,976 shares worth $228M. The position accounts for 0.01% of the portfolio, ranked #1139.

Vanguard Portfolio Management first reported a position in IRTC in Q1 2026 and has held it in 2 quarters since. 301 funds tracked by Wall St. Rank hold IRTC as of Q2 2026.

  • Vanguard Portfolio Management held 1,913,976 shares of iRhythm Holdings worth $228M as of Q2 2026.
  • Vanguard Portfolio Management bought 117,604 iRhythm Holdings shares in Q2 2026, an estimated $13.7M.
  • iRhythm Holdings made up 0.01% of Vanguard Portfolio Management's portfolio in Q2 2026, its #1139 holding.
  • Vanguard Portfolio Management first reported a position in iRhythm Holdings in Q1 2026 and has held it in 2 quarters since.
  • 301 funds tracked by Wall St. Rank held iRhythm Holdings as of Q2 2026.

Based on Vanguard Portfolio Management's 13F filing for Q2 2026, filed 13 Aug 2026.