Secondary market gains headed south in the final three months of 2016, and so far it’s not looking too bright for the first quarter of 2017, which has about four weeks to go before it’s a wrap. According to a new report from Piper Jaffray, gain-on-sale margins declined to an average of 94 basis points in the fourth quarter, compared to a more robust 106 bps in the third. Piper said GOS is currently tracking at about 88 basis points. The research firm’s coverage universe includes...