An idea about the open interest on request

NSE:NIFTY   Nifty 50 Index
Open interest applies primarily to the futures market. Open interest, or the total number of open contracts on an instrument, is often used to confirm trends and trend reversals for futures and options contracts.

Open interest is the total number of outstanding contracts that are held by market participants at the end of the day. It can also be defined as the total number of futures contracts or option contracts that have not yet been exercised, squared off, expired, or fulfilled by delivery.
Open interest measures the flow of money into the futures market. For each seller of a futures contract there must be a buyer of that contract. Thus a seller and a buyer combine to create only one contract.

Therefore, to determine the total open interest for any given market we need only to know the totals from one side or the other, buyers or sellers, not the sum of both.

The open interest position that is reported each day represents the increase or decrease in the number of contracts for that day, and it is shown as a positive or negative number.

calculate Open Interest

Each trade completed on the exchange has an impact upon the level of open interest for that day.

For example, if both parties to the trade are initiating a new position. say one new buyer and one new seller, then the open interest will increase by one contract.

If both traders are closing an existing or old position. one old buyer and one old seller, so open interest will decline by one contract.

The third and final possibility is one old trader passing off his position to a new trader that, one old buyer sells to one new buyer. This case the open interest will not change.

Get a CLUE from monitoring open interest

By monitoring the changes in the open interest figures at the end of each trading day, some conclusions about the day’s activity can be drawn.

Increasing open interest means that new money is flowing into the marketplace. The result will be that the present trend whatever it is up, down or sideways will continue.

Declining open interest means that the market is liquidating and implies that the prevailing price trend is coming to an END. Here we are now. A knowledge of open interest can prove useful toward the end of major market moves.

A cutting off of open interest following a sustained price advance is often an early warning of the end to an up trending or bull market.

Open Interest - A confirming indicator
An increase in open interest along with an increase in price is said to confirm an upward trend. Similarly, an increase in open interest along with a decrease in price confirms a downward trend. An increase or decrease in prices while open interest remains flat or declining may indicate a possible trend reversal.

Use following table to memorize the relationship between the prevailing price trend and open interest:

Price Open Interest Interpretation
Rising Rising Market is Strong
Rising Falling Market is Weakening
Falling Rising Market is Weak
Falling Falling Market is Strengthening

Now look at the open interest of Nifty 23 Feb 2017 current month future.

Date Open High Low Close Settle Price Contracts Turnover (in lacs) OI Changes

10-Feb-17 8829.9 8839.9 8786.6 8809.4 8809.4 87575.0 578911.5 21685425
13-Feb-17 8836.7 8846.0 8765.5 8815.4 8815.4 118500.0 782547.4 22318275 632850
14-Feb-17 8824.0 8830.0 8786.1 8814.9 8814.9 89528.0 591555.6 23350950 1032675
15-Feb-17 8826.1 8827.2 8727.0 8743.1 8743.1 171595.0 1128252.0 25091025 1740075
16-Feb-17 8760.0 8796.2 8734.0 8787.6 8787.6 103632.0 681849.9 24620025 -471000
17-Feb-17 8869.8 8872.5 8800.1 8827.0 8827.0 137805.0 913002.4 24253650 -366375
20-Feb-17 8828.2 8881.3 8810.0 8873.9 8873.9 115075.0 763958.9 21694650 -2559000
21-Feb-17 8880.1 8924.5 8858.9 8910.4 8910.4 174589.0 1163091.7 16272450 -5422200


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