Bryan T. Durkin is Director at CME GROUP INC. (CME). They have made 13 open-market trades across 1 company since 2007, most recently 2026-06-25.
CIK 0001341363
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 13 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| CME | 43,652 | $12.8M |
Shares reported on the most recent Form 4, priced at the 2026-06-29 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| CME | SELL | 2026-02-23 | 2026-02-23 | $309.65 | $1.3M | +1.1% | -6.2% | -9.9% |
| CME | SELL | 2024-08-30 | 2024-09-03 | $214.59 | $3.3M | +1.5% | +4.9% | +10.2% |
| CME | SELL | 2023-12-11 | 2023-12-12 | $216.37 | $2.4M | +0.1% | -8.3% | +1.2% |
| CME | SELL | 2021-11-05 | 2021-11-08 | $222.08 | $4.4M | +2.7% | +5.3% | +10.1% |
| CME | SELL | 2021-02-19 | 2021-02-23 | $195.58 | $2.2M | +7.0% | +2.7% | +8.7% |
| CME | SELL | 2020-05-21 | 2020-05-26 | $180.11 | $3.2M | +4.0% | -8.7% | -5.1% |
| CME | SELL | 2018-08-06 | 2018-08-07 | $162.01 | $3.7M | +3.7% | +6.2% | +13.5% |
| CME | SELL | 2017-08-08 | 2017-08-09 | $125.13 | $1.2M | -0.3% | +1.9% | +9.4% |
| CME | SELL | 2016-12-28 | 2016-12-29 | $116.39 | $3.5M | -0.1% | +3.8% | +2.1% |
| CME | SELL | 2016-11-30 | 2016-12-01 | $112.85 | $1.7M | +6.9% | -0.9% | +10.0% |
| CME | SELL | 2016-10-31 | 2016-11-01 | $100.00 | $1.5M | +14.7% | +15.2% | +20.8% |
| CME | SELL | 2016-09-28 | 2016-09-30 | $105.11 | $1.9M | +0.2% | -3.8% | +11.0% |
| CME | SELL | 2016-09-06 | 2016-09-08 | $107.75 | $1.6M | +2.7% | -1.8% | +14.0% |
| CME | SELL · 10b5-1 | 2015-11-20 | 2015-11-24 | $98.00 | $1.1M | -5.2% | -0.1% | +3.6% |
| CME | SELL · 10b5-1 | 2008-02-22 | 2008-02-25 | $525.00 | $263K | -5.2% | -0.1% | -0.1% |
| CME | SELL · 10b5-1 | 2008-01-30 | 2008-02-01 | $611.50 | $841K | -5.2% | -0.1% | -0.1% |
| CME | SELL · 10b5-1 | 2008-01-15 | 2008-01-17 | $616.75 | $925K | -5.2% | -0.1% | -0.1% |
| CME | SELL · 10b5-1 | 2007-11-20 | 2007-11-21 | $649.25 | $508K | -5.2% | -0.1% | -0.1% |
| CME | SELL · 10b5-1 | 2007-11-02 | 2007-11-06 | $651.56 | $794K | -5.2% | -0.1% | -0.1% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.