Open interest is the count of contracts still open. On its own it is directionless: it rises when positions are created and falls when they are closed, and it says nothing about who created them or why. Paired with the price change over the same window it becomes a description of behaviour, and that pairing is the whole of what this dashboard does.
There are four combinations and each has a conventional name. Price up with open interest up is long build-up: new money paying higher prices. Price down with open interest up is short build-up: new positions created into weakness. Price up with open interest down is short covering, where the move is existing shorts buying their way out rather than anyone arriving. Price down with open interest down is long unwinding, holders leaving rather than sellers appearing.
The dashboard applies that classification across the whole NSE F&O universe and prints the underlying price change and the open-interest change that produced each label beside the label itself. That is the part worth using. The four names are a convention, not a measurement, and a symbol whose open interest moved a fraction of a per cent gets exactly the same word as one where it nearly doubled. The magnitude lives in the two numbers, so the label can be checked rather than trusted.
Short covering and long build-up both show a rising price and are frequently read as the same thing. They are not. Covering is a finite, mechanical bid that stops the moment the trapped shorts are out, and the move often stalls immediately after. A build-up is fresh capital taking a position it intends to hold.
The classification also rests on an inference rather than an observation. It assumes new open interest was initiated by whoever pushed the price, which is usually fair and sometimes wrong. Hedged positions break it, because the futures leg of a cash hedge looks identical to a directional short. Rollover week breaks it harder: open interest falls in the near expiry and rises in the next one with nothing being unwound at all, so a wave of apparent long unwinding on the same day across many symbols is usually just the calendar. Read the further expiry alongside it before concluding anything.
The dashboard is free, needs no account, and is analytics rather than advice.
Long build-up is price rising while open interest also rises, which means new positions are being created by buyers paying up. Short build-up is price falling while open interest rises, meaning new positions are being created into weakness. In both cases the defining feature is that open interest grew, so money entered rather than merely changed hands.
Both show the price going up, but the fuel is different. Short covering is existing shorts buying back, so open interest falls and the bid disappears once they are out. Long build-up is new buyers arriving, so open interest rises. The open-interest column is what separates them, which is why this dashboard prints it next to the label.
Not on its own. It tells you positions were created while the price was falling, which is information about who is positioned where, not a forecast. Crowded short positioning can also be the setup for a sharp squeeze higher. Treat it as context alongside price and volume rather than as a signal.
Because contracts are being rolled into the next expiry or simply allowed to lapse. Open interest falling in the near month while it rises in the following month is rollover, not unwinding, even though the four-way classification will label it as unwinding. During rollover week, read the near and further expiries together before drawing any conclusion.
The whole NSE F&O universe, index and stock, classified on the same four-way rule and refreshed through the trading session. The page is free and needs no account. It is analytics only, so nothing in it is a recommendation to buy or sell.
Analytics only. Not investment advice. Last updated .