There has not be a large speculative short position in NNVC (i.e., non-market making related) since Feb/March of 2014. Most of the speculative short position was covered by June of that year. The lenders of the stock were getting nervous and the rate charged for loaning the stock went through the roof. One broker was offering a 60% annualized return to induce lenders of the stock of the stock to come forward. At that point it became cheaper to buy put options and it still is.
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