Trending OI
Live open interest momentum across strikes for index and stock options. See OI changes, diff in OI, direction of change, and day high/low breaks.
What Trending OI shows
Open interest momentum across the strikes you pick, row by row through the session, for index and stock options. Instead of one snapshot of where open interest stands, each row is a moment in the day: how much call and put OI has been added or removed since today's open across your selected strikes, which side is ahead, which way that balance moved since the previous row, and whether price broke the day's high or low at that moment.
Watch the tutorial
Trending OI, section by section, in a 3-minute video, also in Hindi, Tamil, Telugu, Kannada and Malayalam.
Watch in
How to read the columns
- Chng. in Call OI / Chng. in Put OI — open interest added (+) or removed (−) on each side since today's open, summed across your selected strikes — not since the previous row. Fresh call writing leans bearish and call writers covering leans bullish; on the put side it is the mirror image, so fresh put writing leans bullish and put writers covering leans bearish.
- Diff. in OI — the put change minus the call change, so one number tells you which side has attracted more fresh positioning since the open. Positive reads Bullish in the Sentiment column, negative reads Bearish.
- Direction of chng. — the arrow, Chng. in Direction and the percentage beside it compare this row's Diff. in OI with the previous row's — whether the balance is still moving the same way, and how fast. A large build that is slowing matters less than a smaller one that is growing.
- Day Strength and Flow — two reads of the same tape — Day sizes the session's net tilt against the option book, with dots for how one-sided the repositioning has been, while Flow scores only the last few intervals, so a stale morning build can't masquerade as live pressure. A grey Quiet capsule means too little open interest moved in the recent window to score. Unwind and CAS-tail chips beside Sentiment mark stretches where positions are being dismantled rather than built, or the closing-auction window after about 15:15, where the classic build-up read doesn't apply.
- Net PCR — total put open interest divided by total call open interest across your selected strikes at that moment, so you see it moving through the day rather than as a single closing figure.
- Level Break — a D.H.B. / D.L.B. tag beside the LTP when spot broke the day's high or low at that row, which is how you tell a level that broke on fresh positioning from one that drifted.
- The controls — Live follows today as it happens and Historical replays a past session. Pick the index or stock, the interval between rows (3 minutes by default), the expiry and — with Change Strike Prices — which strikes are summed. Qty or Lots switches the units, Chart view draws the same numbers as a chart against price (Diff in OI, momentum, Net PCR, total OI, call against put, OI strength), and CSV downloads the table.
Frequently asked questions
It means tracking how open interest changes through the session rather than reading its total. A strike carrying large open interest tells you about accumulated positions, while the change in that number tells you what traders are doing right now.
A daily figure nets everything together, so a morning build that was unwound after lunch looks like nothing happened. Splitting the session into intervals shows the sequence, which is usually where the information is.
It is the change in put open interest minus the change in call open interest since today's open, across the strikes you selected, so a single number shows which side has attracted more fresh positioning so far. Positive reads Bullish, negative Bearish.