last year there was alot of small sell orders to stifle the SP, they were often sporadic throughout the course of the day. i don't know quite how it works, but i think it is more to do with technical indicators for software than visual price increments, and is generally the work of brokers, not ordinary joes.
i have no intention of selling my holding in this as i am in it for a very long ride, so i have no ulterior motive in saying that i think it is probably a positive indicator, as it means that smart money is taking an interest again.
FUT Price at posting:
0.5¢ Sentiment: Buy Disclosure: Held