WinWater Home Mortgage, a New York-based conduit managed by several Wall Street veterans, is ready to market its first jumbo MBS, but has also made inquiries about non-prime transactions as well, according to traders and lenders familiar with the company. WinWater plans to issue a $249.47 million jumbo MBS, according to a presale report released late this week by Kroll Bond Rating Agency. Not only is the bond WinWater’s first deal, it represents the first new issuance in the sector since late April when Credit Suisse came to market. The average combined loan-to-value ratio on the deal is...