Gevo Inc (GEVO)

[BettingAngles]

Good news for Longs: Among other things, Rule 201 requires that a trading center establish, maintain, and enforce written policies and procedures reasonably designed to prevent the execution or display of a short sale order of a covered security at a price that is less than or equal to the current national best bid if the price of that covered security decreases by 10% or more from the covered security’s closing price as of the end of regular trading hours on the prior day. Once the circuit breaker in Rule 201 has been triggered, the price test restriction will apply to short sale orders in that security for the remainder of the day and the following day, unless an exception applies.

https://www.sec.gov/divisions/marketreg/rule201faq.htm