There are actually some somewhat analogous situations in the US listed equity options markets. Options are typically adjusted for corporate actions other than regular dividends. However, special dividends are only adjusted for if they are more than 12.5 cents per share. And for voluntary corporate actions the options are adjusted according to whatever would happen to a non-electing shareholder. So if there's an exchange or tender offer, or a merger with electable form of payment, you have to exercise your options ahead of the ex date in order to benefit.