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Hillsdale Investment Management’s iRhythm Holdings IRTC Stock Holding History

Hillsdale 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 		$4.12M Buy
34,950
+900
+3% +$130K 0.11% 234
2025
Q4 		$6.04M Sell
34,050
-4,200
-11% -$744K 0.17% 159
2025
Q3 		$6.58M Buy
38,250
+750
+2% +$119K 0.2% 147
2025
Q2 		$5.77M Buy
+37,500
New +$4.85M 0.21% 117

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

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

Hillsdale Investment Management increased its iRhythm Holdings (IRTC) stake by 2.6% in Q1 2026, buying an estimated $130K and bringing the position to 34,950 shares worth $4.12M. The position accounts for 0.11% of the portfolio, ranked #234.

Hillsdale Investment Management first reported a position in IRTC in Q2 2025 and has held it in 4 quarters since. The position peaked at $6.58M in Q3 2025. 304 funds tracked by Wall St. Rank hold IRTC as of Q1 2026.

  • Hillsdale Investment Management held 34,950 shares of iRhythm Holdings worth $4.12M as of Q1 2026.
  • Hillsdale Investment Management bought 900 iRhythm Holdings shares in Q1 2026, an estimated $130K.
  • iRhythm Holdings made up 0.11% of Hillsdale Investment Management's portfolio in Q1 2026, its #234 holding.
  • Hillsdale Investment Management first reported a position in iRhythm Holdings in Q2 2025 and has held it in 4 quarters since.
  • Hillsdale Investment Management's iRhythm Holdings position peaked at $6.58M in Q3 2025.
  • 304 funds tracked by Wall St. Rank held iRhythm Holdings as of Q1 2026.

Based on Hillsdale Investment Management's 13F filing for Q1 2026, filed 4 May 2026.