Tom Gayner's CME Position Overview
Tom Gayner (via Markel Group Inc.) currently holds 32,000 shares of CME Group Inc. (CME) worth $8.65 M, representing 0.07% of the portfolio. First purchased in 2014-Q2, this long-term strategic position has been held for 26 quarters.
Based on 13F filings, Tom Gayner has maintained a strategic position in CME, demonstrating sustained confidence in this investment. Largest addition occurred in Q1 2015, adding 45,000 shares. Largest reduction occurred in Q3 2019, reducing 135,000 shares.
Analysis based on 13F filings available since 2013 Q2
Tom Gayner's CME Group (CME) Holding Value Over Time
Track share changes against reported price movement
Quarterly CME Group (CME) Trades by Tom Gayner
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q2 2014 | +24,000 | New Buy | 24,000 | $70.96 |
| Q3 2014 | +21,000 | Add 87.50% | 45,000 | $79.96 |
| Q4 2014 | +11,000 | Add 24.44% | 56,000 | $88.64 |
| Q1 2015 | +45,000 | Add 80.36% | 101,000 | $94.71 |
| Q2 2015 | +13,000 | Add 12.87% | 114,000 | $93.06 |
| Q3 2015 | +2,000 | Add 1.75% | 116,000 | $92.74 |
| Q2 2016 | +7,000 | Add 6.03% | 123,000 | $97.40 |
| Q3 2016 | +12,000 | Add 9.76% | 135,000 | $104.52 |
| Q3 2019 | -135,000 | Sold Out | 0 | $0.00 |
| Q4 2024 | +3,000 | New Buy | 3,000 | $232.23 |
| Q1 2025 | +6,500 | Add 216.67% | 9,500 | $265.29 |
| Q2 2025 | +13,000 | Add 136.84% | 22,500 | $275.62 |
| Q3 2025 | +9,500 | Add 42.22% | 32,000 | $270.19 |
Tom Gayner's CME Group Investment FAQs
Tom Gayner first purchased CME Group Inc. (CME) in Q2 2014, acquiring 24,000 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Tom Gayner has held CME Group Inc. (CME) for 26 quarters since Q2 2014.
Tom Gayner's largest addition to CME Group Inc. (CME) was in Q1 2015, adding 101,000 shares worth $9.57 M.
According to the latest 13F filing for Q3 2025, Tom Gayner's firm, Markel Group Inc., owns 32,000 shares of CME Group Inc. (CME), valued at approximately $8.65 M.
As of the Q3 2025 filing, CME Group Inc. (CME) represents approximately 0.07% of Tom Gayner's publicly disclosed stock portfolio, making it one of their key holdings.
Tom Gayner's peak holding in CME Group Inc. (CME) was 135,000 shares, as reported at the end of Q3 2016.