Very "pre sho" since the last time GRNO was on the reg sho threshold list was last August. The last reported short position was less than 3k shares. http://www.otcmarkets.com/stock/GRNO/short-sales
As for volumes, when GRNO was promoted, it was selling over a million shares on some days, even a couple of 2 million share days. Now it's lucky to see a million shares a week.
If there was any significant shorting, I'd bet it was a PIPE that had/has convertibles.
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