OI walls by strike. A mirrored bar chart of open interest at each
strike — puts on the left, calls on the right — with the NIFTY spot level
drawn across it. Large bars are the strikes where the most option
positions sit, often described as support and resistance "walls".
Session replay. Step or play through the trading day and watch
the walls build, shift and unwind, with spot moving against them. Choose
30, 15 or 5-minute steps, and how many strikes either side of spot to
show.
Max pain, live through the day. The strike at which option
writers would lose least is drawn directly on the chart and traced across
the timeline, so you can see it drift as positions change — not just its
closing value.
Full-day heatmap. Time across, strikes down, brightness showing
where open interest is concentrated at every moment of the session, with
the spot and max-pain paths overlaid.
Buildup classification. Hover any bar for open interest, its
change since the open and since the previous step, the premium, and
whether that strike looks like long buildup, short buildup, long
unwinding or short covering.
Option price calculator. Pick a strike and option type, then a
number of hours ahead, and get two independent estimates side by side:
a theoretical projection across a range of spot moves, and an empirical
view of what comparable options actually did over past sessions. They
often disagree — that gap is the useful part.
How to read the calculator
An option's value after a few hours is driven far more by where spot
goes than by time passing. The scenario table therefore varies spot
and shows the unchanged-spot row separately — that row alone is the pure
time-decay case.
The theoretical estimate assumes volatility stays where it is now. Real
volatility moves, and usually moves most exactly when it matters, so treat
it as a sketch of shape rather than a forecast of price.
The empirical panel reports how many past sessions it matched. When that
number is small, it is an illustration, not a probability.
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publisher is not a registered investment adviser or research analyst.
Projections are illustrations, not predictions. Calculator output
is produced by standard models and historical comparison under stated
assumptions. It is not a forecast. Past behaviour does not indicate future
results.
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