Elizabeth A. Cook is Director at CME GROUP INC. (CME). They have made 10 open-market trades across 1 company since 2019, most recently 2026-09-14.
CIK 0001643475
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 10 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| CME | 17,916 | $5.5M |
Shares reported on the most recent Form 4, priced at the 2026-09-14 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 | 2026-09-14 | 2026-09-14 | $280.11 | $140K | -2.3% | +3.8% | — |
| CME | SELL | 2026-03-06 | 2026-03-09 | $320.00 | $320K | +0.5% | -2.1% | -18.5% |
| CME | SELL | 2024-11-12 | 2024-11-12 | $226.33 | $339K | +1.0% | +4.1% | +6.7% |
| CME | SELL | 2024-05-20 | 2024-05-21 | $211.52 | $212K | -3.4% | -5.0% | +0.0% |
| CME | SELL | 2023-10-30 | 2023-10-30 | $211.43 | $106K | +2.4% | +1.7% | -3.1% |
| CME | SELL | 2023-10-27 | 2023-10-30 | $208.22 | $104K | +2.4% | +1.7% | -3.1% |
| CME | SELL | 2022-02-10 | 2022-02-14 | $244.25 | $244K | -0.7% | +0.4% | -18.6% |
| CME | SELL | 2021-06-09 | 2021-06-10 | $216.15 | $832K | +1.4% | -1.3% | -9.0% |
| CME | SELL | 2019-06-10 | 2019-06-12 | $204.27 | $61K | -0.2% | +4.4% | +3.4% |
| CME | SELL | 2019-06-05 | 2019-06-07 | $199.01 | $100K | -2.9% | -0.6% | +8.8% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.