National Aluminium Company Limited

Metals & Mining · Non - Ferrous Metals

NSE: NATIONALUM BSE: 532234

₹340.95

Sept. 30, 2026 · NSE · nse_bhavcopy

F&O (Single-Stock Futures)

Single-stock futures activity for this company -- see the Options Chain section below for OI by strike, PCR, Max Pain and Greeks.

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Combined Open Interest (all active contracts, full history -- via the Parquet/DuckDB analytics lake, ADR-0183)

Basis (nearest contract vs spot) +8.80

OI Buildup (each live contract's own price change vs. change in OI, latest real trading day)

Expiry	Close	Price Chg	OI	Chg OI	Buildup
Oct. 27, 2026	344.0000	-5.25	37940625	894375	Short Buildup
Nov. 23, 2026	343.9500	-6.25	1051875	101250	Short Buildup

Date	Expiry	Open	High	Low	Close	OI	Change in OI
Sept. 30, 2026	Dec. 29, 2026	349.7500	349.7500	349.7500	349.7500	1875	1875
Sept. 30, 2026	Nov. 23, 2026	348.8500	350.7000	343.2500	343.9500	1051875	101250
Sept. 30, 2026	Oct. 27, 2026	348.1500	350.7500	343.2500	344.0000	37940625	894375
Sept. 29, 2026	Nov. 23, 2026	346.8000	350.2500	342.7500	350.2000	950625	208125
Sept. 29, 2026	Oct. 27, 2026	347.7000	351.5000	342.8000	349.2500	37046250	4479375
Sept. 29, 2026	Sept. 29, 2026	345.0000	350.1000	341.1000	346.1000	3601875	-4571250
Sept. 28, 2026	Nov. 23, 2026	351.8000	351.8000	346.8000	348.4500	742500	215625
Sept. 28, 2026	Oct. 27, 2026	356.1000	357.4000	346.0000	347.7500	32566875	7440000
Sept. 28, 2026	Sept. 29, 2026	354.9500	355.3500	344.0000	346.2000	8173125	-7813125
Sept. 25, 2026	Nov. 23, 2026	363.5500	364.1500	359.0000	359.7500	526875	43125

Options Chain

As of Aug. 25, 2026. IV and Greeks are solved from each option's own real market price via Black-Scholes, assuming a fixed 7% risk-free rate (not a live/dated rate -- no such feed exists in the source data).

PCR (OI) —

Max Pain 380.0000

Open Interest by Strike (Max Pain: 380.0000)

Implied Volatility by Strike (solved from each real market price via Black-Scholes)

CALLS					Strike	PUTS
OI	Chg OI	LTP	IV%	Delta		Delta	IV%	LTP	Chg OI	OI
0	-1875	16.5000	304.35	0.357	380.0000