Barclays
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Barclays’s iRhythm Holdings IRTC Stock Holding History

Barclays’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
2020
Q3 		– Sell
-14,000
Closed -$1.62M – 5381
2020
Q2 		$1.62M Buy
+14,000
New +$1.54M ﹤0.01% 2317
2019
Q3 		– Sell
-110,500
Closed -$8.74M – 6911
2019
Q2 		$8.74M Buy
110,500
+79,000
+251% +$5.75M 0.01% 1443
2019
Q1 		$2.36M Buy
+31,500
New +$2.69M ﹤0.01% 2390

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

Barclays's IRTC Position: Q1 2026 in Review

Barclays reduced its iRhythm Holdings (IRTC) stake by 2.9% in Q1 2026, selling an estimated $812K and leaving 188,345 shares worth $22.2M. The position accounts for 0.01% of the portfolio, ranked #1048.

Barclays first reported a position in IRTC in Q1 2017 and has held it in 35 quarters since. The position peaked at $34.4M in Q4 2025. 304 funds tracked by Wall St. Rank hold IRTC as of Q1 2026.

  • Barclays held 188,345 shares of iRhythm Holdings worth $22.2M as of Q1 2026.
  • Barclays sold 5,630 iRhythm Holdings shares in Q1 2026, an estimated $812K.
  • iRhythm Holdings made up 0.01% of Barclays's portfolio in Q1 2026, its #1048 holding.
  • Barclays first reported a position in iRhythm Holdings in Q1 2017 and has held it in 35 quarters since.
  • Barclays's iRhythm Holdings position peaked at $34.4M in Q4 2025.
  • 304 funds tracked by Wall St. Rank held iRhythm Holdings as of Q1 2026.

Based on Barclays's 13F filing for Q1 2026, filed 15 May 2026.