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Two Sigma Securities’s iRhythm Holdings IRTC Stock Holding History

Two Sigma Securities’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
2024
Q2 		– Sell
-2,200
Closed -$255K – 3324
2024
Q1 		$255K Sell
2,200
-3,400
-61% -$382K ﹤0.01% 2107
2023
Q4 		$599K Buy
5,600
+2,600
+87% +$227K 0.01% 1425
2023
Q3 		$283K Buy
+3,000
New +$305K ﹤0.01% 2005

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

Two Sigma Securities's IRTC Position: Q1 2026 in Review

Two Sigma Securities opened a new position in iRhythm Holdings (IRTC) in Q1 2026: 2,701 shares worth $319K. The stake represents 0.04% of the portfolio and ranks #737 among its holdings. This is a return to the name: Two Sigma Securities previously reported a position in IRTC as recently as Q3 2025.

Two Sigma Securities first reported a position in IRTC in Q3 2020 and has held it in 4 quarters since. The position peaked at $617K in Q3 2025. 304 funds tracked by Wall St. Rank hold IRTC as of Q1 2026.

  • Two Sigma Securities held 2,701 shares of iRhythm Holdings worth $319K as of Q1 2026.
  • iRhythm Holdings was a new Two Sigma Securities position in Q1 2026.
  • iRhythm Holdings made up 0.04% of Two Sigma Securities's portfolio in Q1 2026, its #737 holding.
  • Two Sigma Securities first reported a position in iRhythm Holdings in Q3 2020 and has held it in 4 quarters since.
  • Two Sigma Securities's iRhythm Holdings position peaked at $617K in Q3 2025.
  • 304 funds tracked by Wall St. Rank held iRhythm Holdings as of Q1 2026.

Based on Two Sigma Securities's 13F filing for Q1 2026, filed 15 May 2026.