Well Warren Buffett got 10% Preferreds from Goldman Sachs for $5 billion dollars. I think they qualify as a legitimate financial institution. Also they got a big premium when GS bought back the "GICs" (Preferreds).
"Berkshire Hathaway will receive perpetual preferred shares in Goldman, which will pay a 10 annual percent dividend, or $500 million a year. Those dividends take precedence over other payments to common shareholders. Goldman has the right to buy back the shares at any time for a premium of 10 percent."
"Back in September of 2008, at the height of the credit crisis, Berkshire essentially loaned Goldman $5 billion at an interest rate of 10 percent a year. (That money was repaid in 2011.)"