If it says OI = 192000, it means 192000 contracts are currently active/open.
Qn.1 :- How to know how much quantity is being held in those 192000 contracts ?
Qn.2 :- What is the value of those contracts ?
I’m not an expert here, but I guess one Futures contract means one lot. Else why would it be traded on an exchange?
Hi @SK_1995
192000 OI means there are people who are 192000 lots long and 192000 lots short
Outstanding OI * CMP would be the value
Check this varsity section on open interest 
all your queries should be answered
Considering OI limits and existing OI, how do operators impact on F&O price movements ?
How operators are able to enter market with much higher capital ?
Because people exxagerate how operating the markets work. You don’t need to control the entire market, only a certain percentages is enough. Most people who talk about this do no belong to the operator circle. They’re basically theorists, and very unrealistic ones.
EDIT: This is like how in Hollywood movies hacking scenes are portrayed with exxageration, market operators are similarly perceived, very unrealistically.
EDIT: They take direct NSE membership. This makes it easy for them to work as they don’t have to share their limit with others.
I don’t think it’s lots. It’s units. If I trade one lot of nifty, OI increases by 50.