Erik Schatzker, Editor-at-large for Bloomberg, on Goldman announcing David Solomon will be the sole president of the company, and Lloyd Blankfein saying reports of his exit are premature. MID MARKET REPORT:  Steven DeSanctis, Managing Director and small/mid-cap analyst for Jefferies, on current trends and opportunities in the small to mid-cap space. Ariel Cohen, Senior Fellow at the Atlantic Council and director of the Center for Energy, Natural Resources and Geopolitics at the IAGS, on North Korea and Russia. Jonathan Hill, Founder and Owner of Jonathan A. Hill Booksellers, on pricing rare books, and highlights from the annual Antiquarian Book show, where a Copernicus was on sale for $2 million.