G. Staley Cates is Director at AFFILIATED MANAGERS GROUP, INC. (AMG). They have made 1 open-market trade across 1 company since 2026, most recently 2026-05-06.
CIK 0002125273
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 $459K since 2026, never a sale. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| AMG | 6,405 | $2.5M |
Shares reported on the most recent Form 4, priced at the 2026-05-06 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 |
|---|---|---|---|---|---|---|---|---|
| AMG | BUY | 2026-05-06 | 2026-05-06 | $305.83 | $459K | -3.0% | +10.0% | +25.2% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.