Penny Stocks CANNOT be shorted, OTC is a marketing company that prints anything for money.
An investor would need $2.50 PER SHARE in a margin account to cover, no one in their right mind would risk $2.50 for each .0008 they own in a stock unless they were the most ignorant investor on Earth.
Some DD into how stocks are shorted might be prudent.
"It has yet to be proven that intelligence has any survival value"