Renaissance Technologies's IRTC Position Overview
Renaissance Technologies (via Renaissance Technologies LLC) currently holds 121,400 shares of iRhythm Technologies, Inc. (IRTC) worth $20.88 M, representing 0.03% of the portfolio. First purchased in 2017-Q1, this long-term strategic position has been held for 35 quarters.
Based on 13F filings, Renaissance Technologies has maintained a strategic position in IRTC, demonstrating sustained confidence in this investment. Largest addition occurred in Q2 2021, adding 193,100 shares. Largest reduction occurred in Q1 2022, reducing 223,400 shares.
Analysis based on 13F filings available since 2013 Q2
Renaissance Technologies's iRhythm Technologies (IRTC) Holding Value Over Time
Track share changes against reported price movement
Quarterly iRhythm Technologies (IRTC) Trades by Renaissance Technologies
| Period | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q1 2017 | +87,200 | New Buy | 87,200 | $37.60 |
| Q2 2017 | +187,600 | Add 215.14% | 274,800 | $42.49 |
| Q3 2017 | -72,300 | Reduce 26.31% | 202,500 | $51.88 |
| Q4 2017 | +41,800 | Add 20.64% | 244,300 | $56.05 |
| Q1 2018 | +161,000 | Add 65.90% | 405,300 | $62.95 |
| Q2 2018 | -180,000 | Reduce 44.41% | 225,300 | $81.13 |
| Q3 2018 | -45,200 | Reduce 20.06% | 180,100 | $94.66 |
| Q4 2018 | +17,500 | Add 9.72% | 197,600 | $69.48 |
| Q1 2019 | -110,200 | Reduce 55.77% | 87,400 | $74.97 |
| Q2 2019 | -87,400 | Sold Out | 87,400 | $0.00 |
| Q4 2019 | +177,500 | New Buy | 177,500 | $68.09 |
| Q1 2020 | -177,500 | Sold Out | 177,500 | $0.00 |
| Q1 2021 | +142,500 | New Buy | 142,500 | $138.86 |
| Q2 2021 | +193,100 | Add 135.51% | 335,600 | $66.35 |
| Q3 2021 | -93,500 | Reduce 27.86% | 242,100 | $58.56 |
| Q4 2021 | -242,100 | Sold Out | 242,100 | $0.00 |
| Q1 2022 | +18,700 | New Buy | 18,700 | $157.49 |
| Q2 2022 | -2,300 | Reduce 12.30% | 16,400 | $108.05 |
| Q3 2022 | -16,400 | Sold Out | 16,400 | $0.00 |
| Q4 2022 | +101,800 | New Buy | 101,800 | $0.09 |
| Q1 2023 | -92,200 | Reduce 90.57% | 9,600 | $0.12 |
| Q2 2023 | +73,900 | Add 769.79% | 83,500 | $0.10 |
| Q3 2023 | -10,700 | Reduce 12.81% | 72,800 | $94.26 |
| Q4 2023 | -72,800 | Sold Out | 72,800 | $0.00 |
| Q1 2025 | +22,100 | New Buy | 22,100 | $104.68 |
| Q2 2025 | +119,100 | Add 538.91% | 141,200 | $153.96 |
| Q3 2025 | -19,800 | Reduce 14.02% | 121,400 | $171.99 |
Renaissance Technologies's iRhythm Technologies Investment FAQs
Renaissance Technologies first purchased iRhythm Technologies, Inc. (IRTC) in Q1 2017, acquiring 87,200 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Renaissance Technologies has held iRhythm Technologies, Inc. (IRTC) for 35 quarters since Q1 2017. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Renaissance Technologies's largest addition to iRhythm Technologies, Inc. (IRTC) was in Q2 2021, adding 335,600 shares worth $22.27 M. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
According to the latest 13F filing for Q3 2025, Renaissance Technologies's firm, Renaissance Technologies LLC, owns 121,400 shares of iRhythm Technologies, Inc. (IRTC), valued at approximately $20.88 M. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
As of the Q3 2025 filing, iRhythm Technologies, Inc. (IRTC) represents approximately 0.03% of Renaissance Technologies's publicly disclosed stock portfolio, making it one of their key holdings. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Renaissance Technologies's peak holding in iRhythm Technologies, Inc. (IRTC) was 405,300 shares, as reported at the end of Q1 2018. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.