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Frontier Capital Management’s iRhythm Holdings IRTC Stock Holding History

Frontier Capital 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 		$8.08M Sell
68,454
-2,594
-4% -$374K 0.08% 252
2025
Q4 		$12.6M Sell
71,048
-18,182
-20% -$3.22M 0.13% 218
2025
Q3 		$15.3M Sell
89,230
-17,185
-16% -$2.73M 0.14% 212
2025
Q2 		$16.4M Sell
106,415
-118,495
-53% -$15.3M 0.15% 204
2025
Q1 		$23.5M Sell
224,910
-130,237
-37% -$13.8M 0.26% 146
2024
Q4 		$32M Buy
355,147
+278,743
+365% +$21.9M 0.3% 128
2024
Q3 		$5.67M Buy
+76,404
New +$6.09M 0.05% 244
2018
Q3 		– Sell
-12,770
Closed -$1.04M – 294
2018
Q2 		$1.04M Buy
+12,770
New +$893K 0.01% 296

Other funds holding IRTC

BlackRock
BlackRock New York $5.7T 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 $134B AUM 35.51% 1-Year Est. Return
Artisan Partners
Artisan Partners Milwaukee, Wisconsin $61.3B 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 $41.3B 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