Martin J. Gepsman is Director at CME GROUP INC. (CME). They have made 33 open-market trades across 1 company since 2009, most recently 2026-10-22.
CIK 0001212813
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 33 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| CME | 25,244 | $7.8M |
Shares reported on the most recent Form 4, priced at the 2026-10-22 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 | 2026-10-22 | 2026-10-22 | $302.50 | $121K | +0.0% | — | — |
| CME | SELL | 2026-02-20 | 2026-02-20 | $305.90 | $92K | +3.5% | -0.9% | -6.5% |
| CME | SELL | 2025-05-15 | 2025-05-19 | $273.17 | $82K | +3.9% | -2.2% | -2.8% |
| CME | SELL | 2024-11-04 | 2024-11-04 | $222.92 | $89K | +0.1% | +8.9% | +7.8% |
| CME | SELL | 2023-10-26 | 2023-10-26 | $216.33 | $130K | -1.2% | +0.8% | -5.0% |
| CME | SELL | 2021-12-07 | 2021-12-09 | $231.00 | $116K | -1.5% | -2.5% | +0.7% |
| CME | SELL | 2021-10-28 | 2021-10-28 | $218.27 | $163K | +1.8% | +3.4% | +1.1% |
| CME | SELL | 2021-09-13 | 2021-09-13 | $188.54 | $189K | +1.4% | +7.1% | +19.4% |
| CME | SELL | 2021-09-07 | 2021-09-08 | $194.25 | $194K | -2.2% | +4.8% | +20.2% |
| CME | SELL | 2021-08-30 | 2021-08-30 | $201.00 | $201K | -5.3% | -1.8% | +12.8% |
| CME | SELL | 2021-08-23 | 2021-08-23 | $201.37 | $201K | -2.2% | -6.3% | +11.0% |
| CME | SELL | 2021-03-11 | 2021-03-12 | $205.46 | $308K | -2.1% | -2.1% | +1.8% |
| CME | SELL | 2020-12-14 | 2020-12-15 | $178.44 | $71K | -0.6% | +7.0% | +15.2% |
| CME | SELL | 2020-12-01 | 2020-12-02 | $178.60 | $143K | -2.1% | -1.1% | +14.0% |
| CME | SELL | 2020-09-02 | 2020-09-03 | $173.52 | $868K | -1.6% | -3.5% | +5.2% |
| CME | SELL | 2020-01-03 | 2020-01-07 | $201.16 | $201K | +0.6% | +3.4% | -11.2% |
| CME | SELL | 2019-06-06 | 2019-06-10 | $201.21 | $503K | -2.3% | -0.2% | +5.9% |
| CME | SELL | 2019-05-07 | 2019-05-09 | $178.07 | $356K | +3.7% | +12.9% | +16.1% |
| CME | SELL | 2019-03-14 | 2019-03-18 | $167.91 | $504K | -4.2% | +4.1% | +14.6% |
| CME | SELL | 2018-09-13 | 2018-09-14 | $172.30 | $52K | +0.2% | +0.7% | +8.8% |
| CME | SELL | 2018-05-25 | 2018-05-29 | $159.77 | $96K | +7.1% | +2.7% | +6.9% |
| CME | SELL | 2018-02-15 | 2018-02-16 | $164.29 | $49K | +0.3% | +1.1% | -0.6% |
| CME | SELL | 2017-08-09 | 2017-08-11 | $126.14 | $25K | +1.6% | +3.9% | +11.3% |
| CME | SELL | 2016-09-02 | 2016-09-02 | $109.00 | $33K | +0.7% | -4.1% | +5.9% |
| CME | SELL | 2016-07-29 | 2016-08-02 | $102.60 | $51K | +0.7% | +5.5% | -2.9% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.