In trading on Wednesday, shares of TransCanada Corp's Cumulative Redeemable First Preferred Shares, Series 3 (Toronto: TRP-PRB) were yielding above the 4.5% mark based on its quarterly dividend (annualized to $0.538), with shares changing hands as low as $11.90 on the day. As of last close, TRP.PRB was trading at a 51.80% discount to its liquidation preference amount. It should be noted that the preferred shares are convertible.