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FRONTIER CAPITAL MANAGEMENT CO LLC

Position in IRTC — iRhythm Holdings, Inc.

CIK 351173 Boston, MA

Position in IRTC

as of Mar 31, 2026 · filed May 15, 2026
Position Value
$8,078,941
-$4,527,816 QoQ
Shares Held
68,454
-3.7% QoQ
Ownership
0.208%
of shares outstanding
% of Portfolio
0.08%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Sep 2024
7 quarters on record
Voting authority Sole 76.21030180851375.ToString("F0")% Shared 0.ToString("F0")% None 23.789698191486252.ToString("F0")%

Common Shares in IRTC Over Time

Shares Held

Position Value (USD)

Position in Medical Devices

Healthcare · as of Mar 31, 2026

FRONTIER CAPITAL MANAGEMENT CO LLC holds $204,213,951 across 10 Medical Devices names. IRTC ranks #9 (4.0% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in IRTC

Export CSV
7 filing rows on record
Report Date Value (USD) Shares
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