SENSEX Options — Where Positioning Sits Today

Where SENSEX open interest sits

The heaviest call open interest is at the 77,000 strike, holding 19,42,680 contracts — 6.2% of all SENSEX call open interest on the board, 1.88% above the spot of 75,578. 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 75,000 with 12,71,560 contracts, 6.5% of SENSEX put open interest, 0.76% below spot. Put open interest concentrated below price is usually treated as support for the same reason, and breaks the same way.

No single strike dominates — the heaviest holds only 6.5% of its side, so open interest is spread across the board rather than banked at one level. A flat distribution like this gives weaker reference levels than a peaked one, and the walls quoted above should be read loosely.

New to this? Read the Open Interest guide — how to read it, with worked examples.

What SENSEX's PCR is saying

SENSEX is carrying 1,95,76,460 contracts of put open interest against 3,12,93,660 of call, a put-call ratio of 0.63 — 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 0.61 and has risen to 0.63 — a move of +0.02. That is effectively flat: positioning has not changed sides today.

New to this? Read the PCR guide — how to read it, with worked examples.

SENSEX against its max pain

Max pain for SENSEX computes to 75,900, with spot at 75,578 — 0.43% below 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 pain curve around it is flat — the neighbouring strikes cost writers only 0.4% more than 75,900 does. A basin that shallow means several strikes are near-equally cheap to settle at, so the level is a weak magnet and small shifts in open interest can move it.

There are 2 sessions left to expiry. The level firms up as expiry approaches, because open interest has less time to migrate.

New to this? Read the Max Pain guide — how to read it, with worked examples.

What changed in SENSEX today

The largest fresh call position went on at 76,000, +12,88,780 contracts (+235.5%). Its premium fell over the same window, which is the footprint of call writing rather than call buying.

On the put side the heaviest addition is at 72,500, +8,50,880 contracts (+373.8%). Premium rose alongside it, which points to protection being bought rather than sold.

The biggest unwind is −2,07,840 put contracts at 76,200. 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 SENSEX

The at-the-money straddle on SENSEX costs 547.40 — 283.10 for the call and 264.30 for the put at the 75,700 strike. That sum is what the market charges to be covered in either direction, which makes it the move being priced in: about 0.72% of spot, or roughly 75,153 to 76,247 by expiry on a breakeven basis.

The straddle has moved −14.9% since the open. Premium coming out that quickly usually means implied volatility is falling, time is passing, or both — which is why an option position can lose money with the direction called correctly.

Implied volatility at the money is 12.3% on the call and 12.2% on the put. The two legs are priced almost identically, so there is no meaningful skew at the money right now.

New to this? Read the ATM Premium guide — how to read it, with worked examples.