Shares of Windstream Holdings (NASDAQ: WIN) fell 14.5% in September, according to data from S&P Global Market Intelligence. The slide started when executives from networking assets partner and former Windstream division Uniti Group (NASDAQ: UNIT) dropped some less-than-favorable comments about the regional telecom on the industry conference circuit. Another steep plunge followed later in the month, when a debtholder filed a notice of default against some of Windstream’s senior notes.