Optiver Holding
IRTC icon

Optiver Holding’s iRhythm Holdings IRTC Stock Holding History

Optiver Holding’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 		$14.4K Sell
121
-41
-25% -$4.77K ﹤0.01% 1642
2026
Q1 		$19.1K Buy
162
+24
+17% +$3.46K ﹤0.01% 1107
2025
Q4 		$24.5K Sell
138
-66
-32% -$11.7K ﹤0.01% 998
2025
Q3 		$35.1K Buy
+204
New +$32.4K ﹤0.01% 848

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

Optiver Holding's IRTC Position: Q2 2026 in Review

Optiver Holding reduced its iRhythm Holdings (IRTC) stake by 25% in Q2 2026, selling an estimated $4.77K and leaving 121 shares worth $14.4K. The position accounts for ﹤0.01% of the portfolio, ranked #1642.

Optiver Holding first reported a position in IRTC in Q3 2025 and has held it in 4 quarters since. The position peaked at $35.1K in Q3 2025. 303 funds tracked by Wall St. Rank hold IRTC as of Q2 2026.

  • Optiver Holding held 121 shares of iRhythm Holdings worth $14.4K as of Q2 2026.
  • Optiver Holding sold 41 iRhythm Holdings shares in Q2 2026, an estimated $4.77K.
  • iRhythm Holdings made up ﹤0.01% of Optiver Holding's portfolio in Q2 2026, its #1642 holding.
  • Optiver Holding first reported a position in iRhythm Holdings in Q3 2025 and has held it in 4 quarters since.
  • Optiver Holding's iRhythm Holdings position peaked at $35.1K in Q3 2025.
  • 303 funds tracked by Wall St. Rank held iRhythm Holdings as of Q2 2026.

Based on Optiver Holding's 13F filing for Q2 2026, filed 12 Aug 2026.