Citigroup
IRTC icon

Citigroup’s iRhythm Holdings IRTC Stock Holding History

Citigroup’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
2018
Q4 		– Sell
-6,000
Closed -$568K – 7740
2018
Q3 		$568K Buy
+6,000
New +$523K ﹤0.01% 4123
2018
Q2 		– Sell
-5,300
Closed -$334K – 7659
2018
Q1 		$334K Buy
+5,300
New +$328K ﹤0.01% 4421

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

Citigroup's IRTC Position: Q2 2026 in Review

Citigroup increased its iRhythm Holdings (IRTC) stake by 7.4% in Q2 2026, buying an estimated $2.01M and bringing the position to 249,404 shares worth $29.7M. The position accounts for 0.01% of the portfolio, ranked #962.

Citigroup first reported a position in IRTC in Q4 2016 and has held it in 39 quarters since. The position peaked at $33.8M in Q4 2025. 303 funds tracked by Wall St. Rank hold IRTC as of Q2 2026.

  • Citigroup held 249,404 shares of iRhythm Holdings worth $29.7M as of Q2 2026.
  • Citigroup bought 17,281 iRhythm Holdings shares in Q2 2026, an estimated $2.01M.
  • iRhythm Holdings made up 0.01% of Citigroup's portfolio in Q2 2026, its #962 holding.
  • Citigroup first reported a position in iRhythm Holdings in Q4 2016 and has held it in 39 quarters since.
  • Citigroup's iRhythm Holdings position peaked at $33.8M in Q4 2025.
  • 303 funds tracked by Wall St. Rank held iRhythm Holdings as of Q2 2026.

Based on Citigroup's 13F filing for Q2 2026, filed 3 Aug 2026.