CIM
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CIM Investment Management’s iRhythm Holdings IRTC Stock Holding History

CIM Investment 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
Q1 		$530K Sell
4,491
-1,011
-18% -$146K 0.14% 125
2025
Q4 		$976K Hold
5,502
– – 0.26% 68
2025
Q3 		$946K Sell
5,502
-99
-2% -$15.7K 0.26% 70
2025
Q2 		$862K Sell
5,601
-5,929
-51% -$766K 0.16% 117
2025
Q1 		$1.12M Buy
11,530
+5,696
+98% +$603K 0.26% 50
2024
Q4 		$526K Hold
5,834
– – 0.15% 111
2024
Q3 		$433K Hold
5,834
– – 0.13% 135
2024
Q2 		$628K Buy
5,834
+1,099
+23% +$112K 0.19% 102
2024
Q1 		$549K Hold
4,735
– – 0.16% 122
2023
Q4 		$507K Buy
4,735
+2,607
+123% +$227K 0.16% 126
2023
Q3 		$201K Hold
2,128
– – 0.07% 251
2023
Q2 		$222K Buy
+2,128
New +$255K 0.08% 236
2022
Q3 		– Sell
-3,549
Closed -$383K – 233
2022
Q2 		$383K Hold
3,549
– – 0.16% 134
2022
Q1 		$559K Sell
3,549
-3,083
-46% -$396K 0.19% 109
2021
Q4 		$781K Hold
6,632
– – 0.23% 85
2021
Q3 		$388K Buy
+6,632
New +$351K 0.12% 162

Other funds holding IRTC

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
RI
RTW Investments New York $10B AUM 135.35% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
Artisan Partners
Artisan Partners Milwaukee, Wisconsin $62.3B AUM 26.25% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Holocene Advisors
Holocene Advisors New York $41.5B AUM 42.97% 1-Year Est. Return
UBS AM
UBS AM Chicago, Illinois $481B AUM 26.39% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

CIM Investment Management's IRTC Position: Q1 2026 in Review

CIM Investment Management reduced its iRhythm Holdings (IRTC) stake by 18% in Q1 2026, selling an estimated $146K and leaving 4,491 shares worth $530K. The position accounts for 0.14% of the portfolio, ranked #125.

CIM Investment Management first reported a position in IRTC in Q3 2021 and has held it in 16 quarters since. The position peaked at $1.12M in Q1 2025. 304 funds tracked by Wall St. Rank hold IRTC as of Q1 2026.

  • CIM Investment Management held 4,491 shares of iRhythm Holdings worth $530K as of Q1 2026.
  • CIM Investment Management sold 1,011 iRhythm Holdings shares in Q1 2026, an estimated $146K.
  • iRhythm Holdings made up 0.14% of CIM Investment Management's portfolio in Q1 2026, its #125 holding.
  • CIM Investment Management first reported a position in iRhythm Holdings in Q3 2021 and has held it in 16 quarters since.
  • CIM Investment Management's iRhythm Holdings position peaked at $1.12M in Q1 2025.
  • 304 funds tracked by Wall St. Rank held iRhythm Holdings as of Q1 2026.

Based on CIM Investment Management's 13F filing for Q1 2026, filed 19 May 2026.