Mario Gabelli's IBKR Position Overview
Mario Gabelli (via Gamco Investors, Inc. Et Al) currently holds 17,325 shares of Interactive Brokers Group, Inc. (IBKR) worth $1.11 M, representing 0.01% of the portfolio. First purchased in 2013-Q2, this long-term strategic position has been held for 46 quarters.
Based on 13F filings since 2013, Mario Gabelli has maintained a long-term strategic position in IBKR, representing a significant commitment to this investment thesis. Largest addition occurred in Q1 2017, adding 115,600 shares. Largest reduction occurred in Q4 2015, reducing 136,000 shares.
Analysis based on 13F filings available since 2013 Q2
Mario Gabelli's Interactive Brokers Group (IBKR) Holding Value Over Time
Track share changes against reported price movement
Quarterly Interactive Brokers Group (IBKR) Trades by Mario Gabelli
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q4 2025 | -100 | Reduce 0.57% | 17,325 | $64.31 |
| Q3 2025 | -5,655 | Reduce 24.50% | 17,425 | $68.81 |
| Q2 2025 | +2,960 | Add 14.71% | 23,080 | $55.41 |
| Q1 2025 | -80 | Reduce 0.40% | 20,120 | $41.40 |
| Q4 2024 | -2,400 | Reduce 10.62% | 20,200 | $44.17 |
| Q3 2024 | +11,200 | Add 98.25% | 22,600 | $34.84 |
| Q1 2024 | -600 | Reduce 5.00% | 11,400 | $27.93 |
| Q4 2023 | +1,000 | Add 9.09% | 12,000 | $20.72 |
| Q2 2023 | +800 | Add 7.84% | 11,000 | $20.77 |
| Q1 2023 | +10,200 | New Buy | 10,200 | $20.64 |
| Q4 2022 | -17,548 | Sold Out | 0 | $0.00 |
| Q3 2022 | -11,200 | Reduce 38.96% | 17,548 | $15.96 |
| Q2 2022 | -4,452 | Reduce 13.41% | 28,748 | $13.74 |
| Q1 2022 | +8,800 | Add 36.07% | 33,200 | $16.48 |
| Q4 2021 | -9,700 | Reduce 28.45% | 24,400 | $19.84 |
| Q3 2021 | -10,000 | Reduce 22.68% | 34,100 | $15.57 |
| Q2 2021 | -500 | Reduce 1.12% | 44,100 | $16.44 |
| Q1 2021 | +3,200 | Add 7.73% | 44,600 | $18.25 |
| Q4 2020 | +10,100 | Add 32.27% | 41,400 | $15.24 |
| Q3 2020 | +11,200 | Add 55.72% | 31,300 | $12.08 |
| Q2 2020 | +20,100 | New Buy | 20,100 | $10.45 |
| Q4 2019 | -38,000 | Sold Out | 0 | $0.00 |
| Q3 2019 | -4,800 | Reduce 11.21% | 38,000 | $13.45 |
| Q3 2018 | -1,600 | Reduce 3.60% | 42,800 | $13.83 |
| Q2 2018 | -22,800 | Reduce 33.93% | 44,400 | $16.10 |
| Q1 2018 | -38,400 | Reduce 36.36% | 67,200 | $16.82 |
| Q4 2017 | -5,600 | Reduce 5.04% | 105,600 | $14.80 |
| Q3 2017 | -5,200 | Reduce 4.47% | 111,200 | $11.26 |
| Q2 2017 | +800 | Add 0.69% | 116,400 | $9.36 |
| Q1 2017 | +115,600 | New Buy | 115,600 | $8.68 |
| Q4 2015 | -136,000 | Sold Out | 0 | $0.00 |
| Q2 2015 | -10,400 | Reduce 7.10% | 136,000 | $10.39 |
| Q1 2015 | -16,000 | Reduce 9.85% | 146,400 | $8.50 |
| Q2 2013 | +162,400 | Add 0.00% | 162,400 | $3.99 |
Mario Gabelli's Interactive Brokers Group Investment FAQs
Mario Gabelli first purchased Interactive Brokers Group, Inc. (IBKR) in Q2 2013, acquiring 162,400 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Mario Gabelli has held Interactive Brokers Group, Inc. (IBKR) for 46 quarters since Q2 2013.
Mario Gabelli's largest addition to Interactive Brokers Group, Inc. (IBKR) was in Q2 2013, adding 162,400 shares worth $648,000.
According to the latest 13F filing for Q4 2025, Mario Gabelli's firm, Gamco Investors, Inc. Et Al, owns 17,325 shares of Interactive Brokers Group, Inc. (IBKR), valued at approximately $1.11 M.
As of the Q4 2025 filing, Interactive Brokers Group, Inc. (IBKR) represents approximately 0.01% of Mario Gabelli's publicly disclosed stock portfolio, making it one of their key holdings.
Mario Gabelli's peak holding in Interactive Brokers Group, Inc. (IBKR) was 162,400 shares, as reported at the end of Q2 2013.