BAMCO Inc
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BAMCO Inc’s iRhythm Holdings IRTC Stock Holding History

BAMCO Inc’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
Q2 		$21.6M Sell
181,430
-2,470
-1% -$287K 0.03% 202
2026
Q1 		$21.7M Buy
+183,900
New +$26.5M 0.07% 188
2024
Q3 		– Sell
-46,500
Closed -$5.01M – 334
2024
Q2 		$5.01M Buy
46,500
+1,500
+3% +$153K 0.01% 262
2024
Q1 		$5.22M Buy
+45,000
New +$5.06M 0.01% 266
2018
Q4 		– Sell
-602
Closed -$57K – 377
2018
Q3 		$57K Buy
+602
New +$52.4K ﹤0.01% 352

Other funds holding IRTC

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
RI
RTW Investments New York $11.7B AUM 174.13% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Artisan Partners
Artisan Partners Milwaukee, Wisconsin $63.1B AUM 35.51% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Millennium Management
Millennium Management New York $276B AUM 44.8% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
UBS AM
UBS AM Chicago, Illinois $550B AUM 43.33% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
EAM
Eventide Asset Management Boston, Massachusetts $7.48B AUM 104.76% 1-Year Est. Return

BAMCO Inc's IRTC Position: Q2 2026 in Review

BAMCO Inc reduced its iRhythm Holdings (IRTC) stake by 1.3% in Q2 2026, selling an estimated $287K and leaving 181,430 shares worth $21.6M. The position accounts for 0.03% of the portfolio, ranked #202.

BAMCO Inc first reported a position in IRTC in Q3 2018 and has held it in 5 quarters since. The position peaked at $21.7M in Q1 2026. 304 funds tracked by Wall St. Rank hold IRTC as of Q2 2026.

  • BAMCO Inc held 181,430 shares of iRhythm Holdings worth $21.6M as of Q2 2026.
  • BAMCO Inc sold 2,470 iRhythm Holdings shares in Q2 2026, an estimated $287K.
  • iRhythm Holdings made up 0.03% of BAMCO Inc's portfolio in Q2 2026, its #202 holding.
  • BAMCO Inc first reported a position in iRhythm Holdings in Q3 2018 and has held it in 5 quarters since.
  • BAMCO Inc's iRhythm Holdings position peaked at $21.7M in Q1 2026.
  • 304 funds tracked by Wall St. Rank held iRhythm Holdings as of Q2 2026.

Based on BAMCO Inc's 13F filing for Q2 2026, filed 14 Aug 2026.