Tesla And SolarCity Among The Hottest Shorts Last Week

On Wednesday, investors woke up to news that Tesla Motors Inc TSLA offered to acquire SolarCity Corp (NASDAQ; SCTY) for around $2.8 billion. Ironically, both of these names were flagged by Astec Analytics as being some of the most shorted stocks in the market.

SolarCity

SolarCity dropped one spot in Astec's "hot stocks" list and trails just Sears Holdings Corp SHLD.

Related Link: Goldman Sachs Negative On SolarCity Moments Before News Hit Of Tesla's Interest

Borrowing volume has been tracking around the 100 percent level since February, but last week, borrowing volume rose by 11 percent as short sellers now appear unconcerned with the high borrowing costs. Moreover, the high borrowing level indicates a "strong negative sentiment," especially in the $21 to $22 price level.

Tesla

Tesla is a recurring entry in the "hot stocks" list. Short interest fell throughout May, but borrowing volume rose yet again since the beginning of June.

Short interest accounts for more than 80 percent of the available supply, which "should be ringing alarm bells."