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CIBC World Markets’s iRhythm Holdings IRTC Stock Holding History

CIBC World Markets’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
2025
Q4 		$374K Buy
+2,110
New +$374K ﹤0.01% 889
2025
Q2 		$605K Sell
3,930
-3,007
-43% -$389K ﹤0.01% 800
2025
Q1 		$726K Buy
6,937
+4,012
+137% +$425K 0.01% 822
2024
Q4 		$264K Buy
+2,925
New +$230K ﹤0.01% 991

Other funds holding IRTC

Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Sands Capital Management
Sands Capital Management Arlington, Virginia $25.5B AUM 26.46% 1-Year Est. Return
Artisan Partners
Artisan Partners Milwaukee, Wisconsin $62.3B AUM 26.25% 1-Year Est. Return
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $645B AUM 30.41% 1-Year Est. Return
RI
RTW Investments New York $10B AUM 135.35% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
UBS AM
UBS AM Chicago, Illinois $481B AUM 26.39% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

CIBC World Markets's IRTC Position: Q4 2025 in Review

CIBC World Markets opened a new position in iRhythm Holdings (IRTC) in Q4 2025: 2,110 shares worth $374K. The stake represents ﹤0.01% of the portfolio and ranks #889 among its holdings. This is a return to the name: CIBC World Markets previously reported a position in IRTC as recently as Q2 2025.

CIBC World Markets first reported a position in IRTC in Q4 2024 and has held it in 4 quarters since. The position peaked at $726K in Q1 2025. 334 funds tracked by Wall St. Rank hold IRTC as of Q4 2025.

  • CIBC World Markets held 2,110 shares of iRhythm Holdings worth $374K as of Q4 2025.
  • iRhythm Holdings was a new CIBC World Markets position in Q4 2025.
  • iRhythm Holdings made up ﹤0.01% of CIBC World Markets's portfolio in Q4 2025, its #889 holding.
  • CIBC World Markets first reported a position in iRhythm Holdings in Q4 2024 and has held it in 4 quarters since.
  • CIBC World Markets's iRhythm Holdings position peaked at $726K in Q1 2025.
  • 334 funds tracked by Wall St. Rank held iRhythm Holdings as of Q4 2025.

Based on CIBC World Markets's 13F filing for Q4 2025, filed 12 Feb 2026.