Recent Gains Mark Steady Performance for Credit-Enhanced Corts Trust Aon (KTN) Credit-Enhanced Corts Trust Aon (KTN) closed at $26.54 on April 17, maintaining its position after a 0.22% uptick. Over the past month, KTN has shown gradual improvement, rising 0.31%. Year-to-date, the preferred stock is up 0.52%, signaling cautious but consistent investor confidence despite muted trading volumes.12