COALINDIA around the money
| Strike | Call OI | Call LTP | Put LTP | Put OI |
|---|---|---|---|---|
| 395 | 4,71,150 | 25.6 | 0.8 | 15,75,450 |
| 400 | 43,25,400 | 21.65 | 1.15 | 51,62,400 |
| 405 | 23,07,150 | 17.05 | 1.75 | 15,57,900 |
| 410 | 44,95,500 | 13.15 | 2.7 | 33,56,100 |
| 415 | 14,90,400 | 9.95 | 4.1 | 17,92,800 |
| 420 ATM | 50,27,400 | 6.8 | 6.3 | 30,63,150 |
| 425 | 42,67,350 | 4.7 | 9.25 | 17,73,900 |
| 430 | 37,57,050 | 3.2 | 12.5 | 15,03,900 |
| 435 | 20,76,300 | 2.2 | 16.1 | 3,46,950 |
| 440 | 35,86,950 | 1.55 | 21.15 | 4,76,550 |
| 445 | 9,65,250 | 1.15 | 25 | 63,450 |
Where COALINDIA open interest sits
The heaviest call open interest is at the 420 strike, holding 50,27,400 contracts — 13.2% of all COALINDIA call open interest on the board, 0.19% above the spot of 419. Call open interest concentrated above price is commonly read as resistance, on the reasoning that writers there are defending the level. It is a crowding observation, not a rule — the level holds until that open interest unwinds.
On the put side the weight is at 400 with 51,62,400 contracts, 19.1% of COALINDIA put open interest, 4.58% below spot. Put open interest concentrated below price is usually treated as support for the same reason, and breaks the same way.
New to this? Read the Open Interest guide — how to read it, with worked examples.
What COALINDIA's PCR is saying
COALINDIA is carrying 2,70,10,800 contracts of put open interest against 3,81,99,600 of call, a put-call ratio of 0.71 — mildly call-heavy positioning. PCR has no universally good value; it is read against its own recent range, and the direction it is moving carries more than the level.
It opened the session at 0.71 and has held to 0.71 — a move of 0.00. That is effectively flat: positioning has not changed sides today.
New to this? Read the PCR guide — how to read it, with worked examples.
COALINDIA against its max pain
Max pain for COALINDIA computes to 410, with spot at 419 — 2.19% above it. That strike is where the total value of all open contracts expiring would be lowest. It is arithmetic on the current open interest distribution, not a forecast, and the distribution keeps changing.
The curve is defined around it: the nearest strike either side costs writers 4.0% more than 410. A trough that distinct is a stronger reference than a flat basin, though it still describes positioning rather than predicting settlement.
There are 21 sessions to expiry. This far out the figure moves as positions roll, and it is least informative early in a series — worth watching for direction of travel rather than as a target.
New to this? Read the Max Pain guide — how to read it, with worked examples.
What changed in COALINDIA today
The biggest unwind is −1,350 call contracts at 355. Positions closing matters as much as positions opening — a level defended by open interest stops being defended when that open interest leaves, and a break through a strike that is unwinding is a different event from a break against one that is intact.
Change is measured against this session's opening snapshot rather than the previous close, so the overnight gap and the positions rolled at the open do not swamp the reading.
New to this? Read the OI Change guide — how to read it, with worked examples.
The move priced into COALINDIA
The at-the-money straddle on COALINDIA costs 13.10 — 6.80 for the call and 6.30 for the put at the 420 strike. That sum is what the market charges to be covered in either direction, which makes it the move being priced in: about 3.13% of spot, or roughly 407 to 433 by expiry on a breakeven basis.
The straddle has moved 0.0% since the open. That is close to flat, so today's decay and any volatility move have roughly offset.
Implied volatility at the money is 15.6% on the call and 16.9% on the put. The put carries 1.2 points more, the usual shape when downside protection is bid up relative to upside.
New to this? Read the ATM Premium guide — how to read it, with worked examples.
COALINDIA — frequently asked questions
What is the COALINDIA ATM strike today?
The at-the-money strike for COALINDIA is 420, taken from a spot reading of 419.2 on the 29 Sep 2026 expiry. The ATM strike rolls as spot moves, so it is re-selected through the session rather than fixed at the open. It carries the highest time value of any strike, which is why decay is felt most sharply there.
Which COALINDIA strike has the highest open interest?
The heaviest call open interest sits at 420 with 50,27,400 contracts, and the heaviest put open interest at 400 with 51,62,400 contracts. Those two strikes are commonly read as the working range — calls above spot as resistance, puts below as support. They are crowding observations, not guaranteed barriers.
What is open interest in options?
Open interest is the total number of option contracts in a strike that are still open and not yet squared off or settled. It counts positions, not trades. Rising open interest means fresh contracts are being created and new money is entering that strike; falling open interest means existing positions are being closed out.
Is this data live?
The table on this page is baked into the HTML and refreshed through the trading session, so it is readable without JavaScript and carries an as-of stamp. The interactive terminal above it streams live from the exchange feed and updates continuously while the market is open.
Do I need an account to use this?
No account or login is needed. Every tool on this site runs in your browser and is free to use. Nothing you select is stored on a server, and no order can be placed from here — Sahi is an analysis terminal, not a trading or execution platform.
COALINDIA on the live tools
This article is the read. These pages are the terminal, each opening on COALINDIA.