gauravbrills Says
Can some1 throw light on Open Interest ...
i would love to........
I hope that you have some basic idea of futures(very basic).
Now suppose we take the case of CAIRN( i am having long position in this so......)As of today(15 dec ) if you visit
National Stock Exchange of India Ltd. and see the F&O; statistics you will find that
1) Open interest(OI) is 25957500
2) Change in OI is 692500
3) settlement price is 227.1
4) Market wise position limit is is XXXXXXXXXXX
5) client wise position limit is XXXXXXXX
6) lot size is 2500
7) underlying value is 226.75
Now i will try to explain them one by one.......starting from 7
7) Underlying value is the price at which the share closed on friday 14th dec.
Now this is different from the price at which the share traded at 3:30 pm beacuse... CAIRN spurted in the last half hour and the closing price is determined by the weighted average price of the stock traded for last half hour.
6) lot size of any share in future is the lot of units of the particular share you have in futures. So if I have 1 lot of CAIRN bought at 220.5 then I have expose myself to 551250/- value of the lot. Since i have long position I will be hoping that the lot price move up, similarly one who was expecting CAIRN to fall would have short the lot.
when i bought the lot i have opened 2500 units in the OI so I have increased OI by 2500
5) client wise position limit is the limit of the position that a particular client can take in the share........ For CAIRN it is 5515556 it is equivalent to (2206 lots , each lot has 2500 units) so any one client cannot keep buy or sell position of more than 2206 lots.
4) Similarly market wide limit is the total units that can be kept open). Suppose I had bought 1 lot expecting CAIRN to rise while you had sold one so both of us have added 2500 units in OI and the total OI added is 5000. Similarly whn I sell the lot and square off my position then I shed my OI and the OI of the stock decreases
3) See the F&O; positions are daily settled......... meaning the profit and loss are settled daily based on the settlement price.....
Suppose you had one lot of CAIRN which you bought at 200 on Monday and squared off the trade on Friday end, and the closing price for the 5 days starting from monday is 202, 198,205,207,210.
So on monday after closing u will be credited 2500*(202-200)=5000
So on tuesday after closing u will be debited 2500*(198-202)=(-)10000
So on wednesday after closing u will be credited 2500*(205-19

=17500
So on thursday after closing u will be credited 2500*(207-205)=5000
So on friday you will be credited wilth( as you have squared off ) 2500*(210-207)=7500
2) Change in OI indicates the increase/decrease number of units that have been opened for in the futures side with respect to the previous day. If you bought one lot then you add 2500 units to the OI similarly if i sell one lot i add 2500 units to OI
1) OI indicates the positions that are still open in the market.
See F&O; are an enigma but there is no denying the fact that if one can master it then one can become an effective trader !!
Hope my post satisfies your query