Open Interest Analysis : LBld=>LONG BUILDUP (More Call/Put Buying)=> Increase in price with increase in OI . It means people are taking positions assuming price will go up.
LUnw=>LONG UNWINDING => Fall in price with fall in OI. This shows Long positions are now getting exhausted and people are starting to book profits , assuming rally is about to over.
SBld=>SHORT BUILDUP (More Call/Put Writing)=> Fall in price with increase in OI. It means people are taking short positions , assuming price will go down.
SCov=>SHORT COVERING => Increase in price with fall in OI. Short positions are getting decreased and people are booking profits and expecting reversal.