CBOE faces another challenge on exercise rights

Chicago Board Options Exchange (CBOE) member Marshall Spiegel continued his push last week to persuade regulators to stop a CBOE plan to buy exercise rights from Chicago Board of Trade (CBoT) members.

Spiegel, who was able to get Securities and Exchange Commission (SEC) to review SEC's approval of the CBOE plan and thus delay the Dutch auction for CBoT exercise rights...