Editing Open interest

{{Short description|Total number of unsettled contracts}}
'''Open interest''' (also known as '''open contracts''' or '''open commitments''') refers to the total number of outstanding [[Derivative (finance)|derivative]] contracts that have not been settled (offset by delivery).<ref>{{cite web | title = Daily Exchange Volume And Open Interest | website = CMEGroup.com | url = http://www.cmegroup.com/market-data/volume-open-interest/exchange-volume.html | publisher = CME Group | access-date = 2015-03-18}}</ref>

For each buyer of a futures contract there must be a seller. From the time the buyer or seller opens the contract until the counter-party closes it, that contract is considered 'open'.<ref>{{cite web |title=Open Interest vs Volume in Options |url=https://warsoption.com/examples/open-interest-vs-volume-in-options/ |website=Warsoption |access-date=9 March 2021}}</ref>

Open interest also gives key information regarding the liquidity of an option. If there is no open interest for an option, there is no secondary market for that option. When options have large open interest, they have a large number of buyers and sellers. An active secondary market will increase the odds of getting option orders filled at good prices. All other things being equal, the larger the open interest, the easier it will be to trade that option at a reasonable spread between the bid and ask.<ref>{{cite web | title = Options Trading Volume And Open Interest | url = http://www.nasdaq.com/investing/options-trading-volume-open-interest.stm | website = Nasdaq.com | access-date = 2010-09-01}}</ref>

==As a confirming indicator==
An increase in open interest along with an increase in price is said by proponents of [[technical analysis]]<ref>{{cite book| title = Technical analysis of the financial markets: A comprehensive guide to trading methods and applications | last = Murphy | first = John J. | year = 1999 | page = 170-171 | publisher = Penguin}}</ref> 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.

The relationship between the prevailing price trend and open interest can be summarized by the following table:<ref>{{cite web | title = Open Interest | url = http://www.tradingpicks.com/open_interest.htm | website = TradingPicks.com | access-date = 2010-09-01}}</ref><ref>{{cite book | title = Fundamentals of the futures market | first = Donna | last = Kline | url = https://archive.org/details/fundamentalsoffu00klin | url-access = registration | quote = open interest. | page = [https://archive.org/details/fundamentalsoffu00klin/page/142 142], 143 of 256 | publisher = McGraw-Hill Professional | year = 2001 | access-date = 2010-09-01}}</ref>

{| class="wikitable"
|-
! Price !! Open Interest !! Interpretation
|-усШК

| Rising || Rising || Market is strong
|-
| Rising || Falling || Market is weakening
|-
| Falling || Rising || Market is strengthening
|-
| Falling || Falling || Market is weak
|}

== References ==
{{Reflist}}

==External links==
* [http://www.investopedia.com/terms/o/openinterest.asp Open Interest]
* [http://ournifty.com/nifty-future-analysis-using-trading-volume-and-open-interest.html Interpret Price Volume and Open Interest]
* {{in lang|it}} [http://openinterest.it Open Interest of most important italian stocks]

{{Derivatives market}}

[[Category:Derivatives (finance)]]
[[Category:Technical analysis]]