In trading on Wednesday, shares of TransAlta Corp.'s Cumulative Redeemable Rate Reset First Preferred Shares, Series A (Toronto: TA-PRD) were yielding above the 7% mark based on its quarterly dividend (annualized to $0.6772), with shares changing hands as low as $9.67 on the day. As of last close, TA.PRD was trading at a 60.56% discount to its liquidation preference amount. It should be noted that the preferred shares are convertible.