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Natixis’s iRhythm Holdings IRTC Stock Holding History

Natixis’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
2025
Q3 		– Sell
-23,500
Closed -$3.62M – 1140
2025
Q2 		$3.62M Buy
23,500
+17,500
+292% +$2.26M 0.02% 398
2025
Q1 		$617K Hold
6,000
– – ﹤0.01% 631
2024
Q4 		$541K Buy
+6,000
New +$471K ﹤0.01% 688
2023
Q4 		– Sell
-1,500
Closed -$141K – 1101
2023
Q3 		$141K Buy
+1,500
New +$153K ﹤0.01% 752
2022
Q3 		– Sell
-35,400
Closed -$3.82M – 1120
2022
Q2 		$3.82M Buy
35,400
+31,243
+752% +$4.14M 0.01% 512
2022
Q1 		$655K Hold
4,157
– – ﹤0.01% 939
2021
Q4 		$489K Buy
+4,157
New +$381K ﹤0.01% 1040
2021
Q1 		– Sell
-7,452
Closed -$1.77M – 1127
2020
Q4 		$1.77M Sell
7,452
-288
-4% -$65.6K 0.01% 704
2020
Q3 		$1.84M Buy
+7,740
New +$1.37M 0.01% 431

Other funds holding IRTC

Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Artisan Partners
Artisan Partners Milwaukee, Wisconsin $62.3B AUM 26.25% 1-Year Est. Return
Sands Capital Management
Sands Capital Management Arlington, Virginia $25.5B AUM 26.46% 1-Year Est. Return
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $645B AUM 30.41% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
William Blair & Company
William Blair & Company Chicago, Illinois $34.9B AUM 18.88% 1-Year Est. Return
EAM
Eventide Asset Management Boston, Massachusetts $6.05B AUM 76.64% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Natixis's IRTC Position: Q3 2025 in Review

Natixis sold out of iRhythm Holdings (IRTC) in Q3 2025, closing a stake of 23,500 shares — an estimated $3.62M sold.

Natixis first reported a position in IRTC in Q3 2020 and held it in 9 quarters. The position peaked at $3.82M in Q2 2022. 337 funds tracked by Wall St. Rank hold IRTC as of Q3 2025.

  • Natixis reported no remaining iRhythm Holdings position as of Q3 2025 after selling out during the quarter.
  • Natixis sold 23,500 iRhythm Holdings shares in Q3 2025, an estimated $3.62M.
  • Natixis first reported a position in iRhythm Holdings in Q3 2020 and held it in 9 quarters.
  • Natixis's iRhythm Holdings position peaked at $3.82M in Q2 2022.
  • 337 funds tracked by Wall St. Rank held iRhythm Holdings as of Q3 2025.

Based on Natixis's 13F filing for Q3 2025, filed 14 Nov 2025.