CATES G. STALEY purchased 30.6% of their position (1.50K shares) of AFFILIATED MANAGERS GROUP, INC. on the open market
Open‑market purchase worth $458.7K — a major conviction buy. The strongest form of insider conviction signal.
P · 1 purchase
Filed: 5/6/2026ACC: 0001004434-26-000053
Director
Since Apr 2026
+1.50K
Net shares
Net buyer
$458.7K
Total acquired
1
Open market trades
1B · 0S
1
Total transactions
1.50K acquired
Non-Derivative Transactions1
Common Stock
Direct
Shares
+1.50K
Price / share
$305.83
Trade value
$458.75K
% of position
30.6%
5/6/2026
4.91K→6.41K
Total
Net shares
+1.50K
Net value
$458.75K
| Security | Date | Type | Shares | Price / Share | Trade Value | % of Position | Held Before | Held After |
|---|---|---|---|---|---|---|---|---|
| Common Stock Direct | 5/6/2026 | P · Purchase | +1.50K | $305.83 | $458.75K | 30.6% | 4.91K | 6.41K |
| Total | +1.50K | $458.75K | ||||||
Derivative Transactions0
No derivative transactions reported