** Shares of drugmaker Tonix Pharmaceuticals TNXP.O fall 18.7% to $41.76 after surging over 12% in premarket trading
** Late on Friday, TNXP said the US FDA has approved its drug to manage pain related to a type of chronic condition called fibromyalgia
** However, co says in a call with analysts on Monday that its going to be at least until mid-2026 before they expect an inflection in sales of the drug, Tonmya
** Zacks Small-Cap Research analyst David Bautz says "this could be the beginning of the turnover from short-term traders to longer-term shareholders"
** "Its not uncommon for shares of small-cap biotech companies to "sell the news" following an FDA approval," Bautz adds
** The non-opioid drug, to be sold under the brand Tonmya, is a pill designed for bedtime treatment to improve sleep quality and reduce pain associated with the chronic condition
** Bautz estimates peak U.S. sales at $800 million for the drug after seven to eight years post launch
** Including session moves, stock up 31.2% YTD