Hilda Harris Piell is CHRO at CME GROUP INC. (CME). They have made 23 open-market trades across 1 company since 2007, most recently 2026-05-18.
CIK 0001409789
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 23 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| CME | 27,702 | $8.5M |
Shares reported on the most recent Form 4, priced at the 2026-05-19 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 | 2026-05-18 | 2026-05-19 | $304.63 | $1.8M | -14.5% | -18.3% | -11.1% |
| CME | SELL | 2025-02-27 | 2025-02-28 | $250.47 | $2.0M | +1.1% | +4.5% | +12.6% |
| CME | SELL | 2024-05-08 | 2024-05-09 | $210.35 | $2.8M | -1.5% | -7.0% | -4.0% |
| CME | SELL | 2023-08-07 | 2023-08-08 | $207.98 | $1.9M | -0.6% | +0.1% | +3.9% |
| CME | SELL | 2022-08-15 | 2022-08-16 | $203.88 | $2.0M | -3.5% | -6.2% | -14.5% |
| CME | SELL | 2022-03-03 | 2022-03-07 | $244.00 | $488K | +4.7% | +3.5% | -15.3% |
| CME | SELL | 2022-02-24 | 2022-02-25 | $234.01 | $351K | -2.4% | +3.7% | -16.5% |
| CME | SELL | 2021-10-19 | 2021-10-21 | $215.00 | $634K | +2.6% | +4.3% | +6.8% |
| CME | SELL | 2021-03-05 | 2021-03-09 | $213.00 | $320K | -3.3% | -3.2% | +4.1% |
| CME | SELL | 2021-01-07 | 2021-01-08 | $198.00 | $297K | -6.2% | -3.4% | +2.1% |
| CME | SELL | 2020-12-21 | 2020-12-22 | $182.00 | $419K | -1.3% | +2.6% | +9.9% |
| CME | SELL | 2019-05-24 | 2019-05-29 | $188.05 | $388K | +6.5% | +1.8% | +13.4% |
| CME | SELL | 2019-05-22 | 2019-05-23 | $186.23 | $529K | +6.5% | +5.7% | +13.8% |
| CME | SELL | 2018-09-04 | 2018-09-06 | $175.00 | $319K | -0.1% | +4.8% | +9.5% |
| CME | SELL | 2018-02-20 | 2018-02-22 | $163.52 | $1.1M | +5.2% | +0.3% | -0.7% |
| CME | SELL | 2017-10-05 | 2017-10-10 | $138.00 | $186K | -1.2% | +0.9% | +10.9% |
| CME | SELL | 2017-09-06 | 2017-09-07 | $129.00 | $92K | +4.7% | +9.6% | +21.4% |
| CME | SELL | 2017-03-14 | 2017-03-15 | $124.26 | $756K | -5.4% | -6.0% | +0.9% |
| CME | SELL | 2016-12-07 | 2016-12-08 | $120.00 | $702K | +0.0% | -5.0% | +0.6% |
| CME | SELL | 2016-09-19 | 2016-09-21 | $110.00 | $98K | -4.8% | -4.8% | +12.0% |
| CME | SELL · 10b5-1 | 2016-03-04 | 2016-03-07 | $95.00 | $24K | +4.7% | +2.5% | +5.1% |
| CME | SELL | 2016-02-22 | 2016-02-23 | $94.00 | $108K | +3.6% | +4.0% | +5.6% |
| CME | SELL · 10b5-1 | 2015-02-06 | 2015-02-09 | $94.00 | $150K | -5.2% | -0.1% | -0.1% |
| CME | SELL · 10b5-1 | 2014-12-08 | 2014-12-10 | $89.00 | $518K | -5.2% | -0.1% | -0.1% |
| CME | SELL · 10b5-1 | 2014-09-15 | 2014-09-16 | $79.41 | $437K | -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.