Robert J. Birnbaum is Director at CBOE Holdings, Inc. (CBOE). They have made 1 open-market trade across 1 company since 2010, most recently 2010-06-18.
CIK 0001493849
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.
1 open-market purchase totalling $9K since 2010, never a sale. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| CBOE | 7,847 | $2.5M |
Shares reported on the most recent Form 4, priced at the 2010-06-18 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| CBOE | BUY | 2010-06-18 | 2010-06-18 | $29.00 | $9K | -2.9% | -0.9% | -0.9% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.