Renaissance Technologies's IBKR Position Overview
Renaissance Technologies (via Renaissance Technologies LLC) currently holds 963.6K shares of Interactive Brokers Group, Inc. (IBKR) worth $66.31 M, representing 0.09% of the portfolio. First purchased in 2013-Q2, this long-term strategic position has been held for 50 quarters.
Based on 13F filings since 2013, Renaissance Technologies has maintained a long-term strategic position in IBKR, representing a significant commitment to this investment thesis. Largest addition occurred in Q2 2021, adding 1.8M shares. Largest reduction occurred in Q3 2021, reducing 2.2M shares.
Analysis based on 13F filings available since 2013 Q2
Renaissance Technologies's Interactive Brokers Group (IBKR) Holding Value Over Time
Track share changes against reported price movement
Quarterly Interactive Brokers Group (IBKR) Trades by Renaissance Technologies
| Period | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q2 2013 | +1.64 M | Add 0.00% | 1.64 M | $3.99 |
| Q3 2013 | +134,800 | Add 8.22% | 1.78 M | $4.69 |
| Q4 2013 | +763,600 | Add 43.01% | 2.54 M | $6.08 |
| Q1 2014 | -451,076 | Reduce 17.76% | 2.09 M | $5.42 |
| Q2 2014 | -344,524 | Reduce 16.50% | 1.74 M | $5.82 |
| Q3 2014 | -644,800 | Reduce 36.98% | 1.1 M | $6.24 |
| Q4 2014 | +60,800 | Add 5.53% | 1.16 M | $7.29 |
| Q1 2015 | -1.02 M | Reduce 87.55% | 144,400 | $8.50 |
| Q2 2015 | -144,400 | Sold Out | 144,400 | $0.00 |
| Q3 2015 | +1.17 M | New Buy | 1.17 M | $9.87 |
| Q4 2015 | -868,184 | Reduce 74.34% | 299,600 | $10.90 |
| Q1 2016 | -299,600 | Sold Out | 299,600 | $0.00 |
| Q2 2016 | +311,600 | New Buy | 311,600 | $8.85 |
| Q3 2016 | +142,800 | Add 45.83% | 454,400 | $8.82 |
| Q4 2016 | -454,400 | Sold Out | 454,400 | $0.00 |
| Q1 2017 | +799,600 | New Buy | 799,600 | $8.68 |
| Q2 2017 | -123,200 | Reduce 15.41% | 676,400 | $9.36 |
| Q3 2017 | +188,888 | Add 27.93% | 865,288 | $11.26 |
| Q4 2017 | +423,912 | Add 48.99% | 1.29 M | $14.80 |
| Q1 2018 | +382,400 | Add 29.66% | 1.67 M | $16.81 |
| Q2 2018 | -392,400 | Reduce 23.47% | 1.28 M | $16.10 |
| Q3 2018 | -1.28 M | Sold Out | 1.28 M | $0.00 |
| Q2 2020 | +950,800 | New Buy | 950,800 | $10.44 |
| Q3 2020 | +765,200 | Add 80.48% | 1.72 M | $12.08 |
| Q4 2020 | +473,600 | Add 27.60% | 2.19 M | $15.23 |
| Q1 2021 | +355,200 | Add 16.22% | 2.54 M | $18.26 |
| Q2 2021 | +1.8 M | Add 70.65% | 4.34 M | $16.43 |
| Q3 2021 | -2.23 M | Reduce 51.34% | 2.11 M | $15.58 |
| Q4 2021 | -198,800 | Reduce 9.41% | 1.91 M | $19.85 |
| Q1 2022 | -805,200 | Reduce 42.06% | 1.11 M | $16.48 |
| Q2 2022 | -19,200 | Reduce 1.73% | 1.09 M | $13.75 |
| Q3 2022 | +89,200 | Add 8.18% | 1.18 M | $15.98 |
| Q4 2022 | -139,600 | Reduce 11.84% | 1.04 M | $0.02 |
| Q1 2023 | -190,000 | Reduce 18.28% | 849,600 | $0.02 |
| Q2 2023 | +145,200 | Add 17.09% | 994,800 | $0.02 |
| Q3 2023 | -326,400 | Reduce 32.81% | 668,400 | $21.64 |
| Q4 2023 | -65,600 | Reduce 9.81% | 602,800 | $20.72 |
| Q1 2024 | +991,200 | Add 164.43% | 1.59 M | $27.93 |
| Q2 2024 | -947,600 | Reduce 59.45% | 646,400 | $30.65 |
| Q3 2024 | +869,600 | Add 134.53% | 1.52 M | $34.84 |
| Q4 2024 | +903,640 | Add 59.61% | 2.42 M | $44.17 |
| Q1 2025 | +417,600 | Add 17.26% | 2.84 M | $41.40 |
| Q2 2025 | -858,300 | Reduce 30.25% | 1.98 M | $55.41 |
| Q3 2025 | -1.02 M | Reduce 51.31% | 963,640 | $68.81 |
Renaissance Technologies's Interactive Brokers Group Investment FAQs
Renaissance Technologies first purchased Interactive Brokers Group, Inc. (IBKR) in Q2 2013, acquiring 1,640,800 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 Interactive Brokers Group, Inc. (IBKR) for 50 quarters since Q2 2013. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Renaissance Technologies's largest addition to Interactive Brokers Group, Inc. (IBKR) was in Q2 2021, adding 4,342,632 shares worth $71.36 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 963,640 shares of Interactive Brokers Group, Inc. (IBKR), valued at approximately $66.31 M. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
As of the Q3 2025 filing, Interactive Brokers Group, Inc. (IBKR) represents approximately 0.09% 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 Interactive Brokers Group, Inc. (IBKR) was 4,342,632 shares, as reported at the end of Q2 2021. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.