For institutional investors, what occurs during the clearing process?

In institutional trading, clearing occurs after trade execution but before final settlement. The clearing process includes confirming, comparing, and matching trade details such as security name, quantity, price, settlement date, counterparty information, and account instructions. This process reduces settlement risk by ensuring that both sides of the transaction agree on the same terms. Option A describes settlement, where securities and cash are exchanged irrevocably. Options C and D describe execution activities, where orders are matched and filled in the market. Institutional trades often involve multiple parties, including the dealer, investment manager, custodian, and clearing agency, so accurate trade matching is essential. Therefore, confirming and matching trade details is the correct answer.