Go to your brokers sight. example price 2.26 -Bids are 5-600 shares at 2.24. Ask 100 at 2.29. all of the sudden 100 shares trades at 2.289. You and I can't trade in .001's. brokers can. (MM) and why would they only buy 100 shares, to get people to pile on. Notice the quick spike and reversal? A lot of retail investors just got taken to the cleaners.
With the MM's It's wash (drive price up) rinse (sell at profit) then do it again.