yeah, MOY is one stock where gaps always close. we want no spaces between price movements. so if it jumps up to 20.5 on open, it is likely we get back to 19.5. we get some excited traders FOMO buying and these get exploited by pro traders. there is also very impatient short term traders in MOY. the XJO thread especially 5speed is very good at gap trading. RMS has a gap could be deemed a runaway gap but you never know.
