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FRONTIER CAPITAL MANAGEMENT CO LLC

Position in IRTC — iRhythm Holdings, Inc.

CIK 351173 Boston, MA

Position in IRTC

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$15,757,901
+$7,678,960 QoQ
Shares Held
132,475
+93.5% QoQ
Ownership
0.402%
of shares outstanding
% of Portfolio
0.15%
of 13F equity value
Holder Rank
#56
of 304 holders
Holding Since
Sep 2024
8 quarters on record
Voting authority Sole 76% Shared 0% None 24%

Common Shares in IRTC Over Time

Shares Held

Position Value (USD)

Position in Medical Devices

Healthcare · as of Jun 30, 2026

FRONTIER CAPITAL MANAGEMENT CO LLC holds $223,011,989 across 9 Medical Devices names. IRTC ranks #5 (7.1% of the industry book) .

# Ticker Company Shares Value (USD) Open
5 IRTC
iRhythm Holdings, Inc.
This page
132,475 $15,757,901

All Filings in IRTC

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8 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $15,757,901 132,475
2026-03-31 $8,078,941 68,454
2025-12-31 $12,606,757 71,048
2025-09-30 $15,346,667 89,230
2025-06-30 $16,383,653 106,415
2025-03-31 $23,543,578 224,910
2024-12-31 $32,023,604 355,147
2024-09-30 $5,672,232 76,404