NATIONALUM

National Aluminium Co Ltd

374.5 +3.65 (0.98%)

L: 370.75 H: 378.5

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Historical option data for NATIONALUM
04 Feb 2026 11:10 AM IST

Strike Price

Expiry

Ltp Ltp OI Open Interest (OI) OI Chg Change Open Interest Volume Volume IV IV

Call
Put

Per Lot

NATIONALUM 24-FEB-2026 375 CE
Delta: 0.54 Vega: 0.35 Theta: -0.38 Gamma: 0.01
Date	Close	Ltp	Change	IV	Volume	OI Chg	OI
4 Feb	373.80	13.6 ₹ 51,000	-0.35 -1312.50	37.94	542 20,32,500	70 2,62,500	303 11,36,250
3 Feb	370.85	13.65 ₹ 51,187.5	0.15 562.50	40.21	1,323 49,61,250	88 3,30,000	233 8,73,750
2 Feb	369.70	13.85 ₹ 51,937.5	5.8 21750.00	39.7	668 25,05,000	21 78,750	139 5,21,250
1 Feb	354.20	8.2 ₹ 30,750	-15.3 -57375.00	44.19	297 11,13,750	35 1,31,250	119 4,46,250
30 Jan	385.45	22.05 ₹ 82,687.5	-32.45 -121687.50	41.17	95 3,56,250	0 0	83 3,11,250
29 Jan	428.85	55 ₹ 2,06,250	18.6 69750.00	38.59	33 1,23,750	-13 -48,750	83 3,11,250
28 Jan	406.15	36.75 ₹ 1,37,812.5	15.4 57750.00	25.99	151 5,66,250	-56 -2,10,000	97 3,63,750
27 Jan	384.60	21.45 ₹ 80,437.5	6.65 24937.50	34.38	790 29,62,500	-12 -45,000	153 5,73,750
23 Jan	370.65	15.3 ₹ 57,375	3.5 13125.00	35.13	1,048 39,30,000	-124 -4,65,000	165 6,18,750
22 Jan	364.60	11.8 ₹ 44,250	0.65 2437.50	33.74	137 5,13,750	13 48,750	289 10,83,750
21 Jan	361.50	11.8 ₹ 44,250	1.3 4875.00	35.22	274 10,27,500	204 7,65,000	247 9,26,250
20 Jan	358.95	10.5 ₹ 39,375	-3.75 -14062.50	35.6	25 93,750	9 33,750	42 1,57,500
19 Jan	368.65	14.2 ₹ 53,250	1.55 5812.50	33.45	13 48,750	2 7,500	33 1,23,750
16 Jan	361.60	12.65 ₹ 47,437.5	-5.1 -19125.00	35.58	14 52,500	2 7,500	31 1,16,250
14 Jan	373.55	17.45 ₹ 65,437.5	7.45 27937.50	32.03	50 1,87,500	10 37,500	29 1,08,750
13 Jan	357.40	10 ₹ 37,500	2 7500.00	32.4	7 26,250	-2 -7,500	19 71,250
12 Jan	350.05	8 ₹ 30,000	-0.3 -1125.00	32.81	9 33,750	-1 -3,750	21 78,750
9 Jan	348.05	8.6 ₹ 32,250	3.15 11812.50	33.93	2 7,500	0 0	22 82,500
8 Jan	333.50	5.45 ₹ 20,437.5	-4.35 -16312.50	36.57	5 18,750	-1 -3,750	23 86,250

7 Jan	352.60	9.8 ₹ 36,750	1.45 5437.50	32.79	19 71,250	12 45,000	23 86,250
6 Jan	346.70	8.45 ₹ 31,687.5	1.9 7125.00	32.65	21 78,750	11 41,250	11 41,250

For National Aluminium Co Ltd - strike price 375 expiring on 24FEB2026

Delta for 375 CE is 0.54

Historical price for 375 CE is as follows

On 4 Feb NATIONALUM was trading at 373.80. The strike last trading price was 13.6, which was -0.35 lower than the previous day. The implied volatity was 37.94, the open interest changed by 70 which increased total open position to 303

On 3 Feb NATIONALUM was trading at 370.85. The strike last trading price was 13.65, which was 0.15 higher than the previous day. The implied volatity was 40.21, the open interest changed by 88 which increased total open position to 233

On 2 Feb NATIONALUM was trading at 369.70. The strike last trading price was 13.85, which was 5.8 higher than the previous day. The implied volatity was 39.7, the open interest changed by 21 which increased total open position to 139

On 1 Feb NATIONALUM was trading at 354.20. The strike last trading price was 8.2, which was -15.3 lower than the previous day. The implied volatity was 44.19, the open interest changed by 35 which increased total open position to 119

On 30 Jan NATIONALUM was trading at 385.45. The strike last trading price was 22.05, which was -32.45 lower than the previous day. The implied volatity was 41.17, the open interest changed by 0 which decreased total open position to 83

On 29 Jan NATIONALUM was trading at 428.85. The strike last trading price was 55, which was 18.6 higher than the previous day. The implied volatity was 38.59, the open interest changed by -13 which decreased total open position to 83

On 28 Jan NATIONALUM was trading at 406.15. The strike last trading price was 36.75, which was 15.4 higher than the previous day. The implied volatity was 25.99, the open interest changed by -56 which decreased total open position to 97

On 27 Jan NATIONALUM was trading at 384.60. The strike last trading price was 21.45, which was 6.65 higher than the previous day. The implied volatity was 34.38, the open interest changed by -12 which decreased total open position to 153

On 23 Jan NATIONALUM was trading at 370.65. The strike last trading price was 15.3, which was 3.5 higher than the previous day. The implied volatity was 35.13, the open interest changed by -124 which decreased total open position to 165

On 22 Jan NATIONALUM was trading at 364.60. The strike last trading price was 11.8, which was 0.65 higher than the previous day. The implied volatity was 33.74, the open interest changed by 13 which increased total open position to 289

On 21 Jan NATIONALUM was trading at 361.50. The strike last trading price was 11.8, which was 1.3 higher than the previous day. The implied volatity was 35.22, the open interest changed by 204 which increased total open position to 247

On 20 Jan NATIONALUM was trading at 358.95. The strike last trading price was 10.5, which was -3.75 lower than the previous day. The implied volatity was 35.6, the open interest changed by 9 which increased total open position to 42

On 19 Jan NATIONALUM was trading at 368.65. The strike last trading price was 14.2, which was 1.55 higher than the previous day. The implied volatity was 33.45, the open interest changed by 2 which increased total open position to 33

On 16 Jan NATIONALUM was trading at 361.60. The strike last trading price was 12.65, which was -5.1 lower than the previous day. The implied volatity was 35.58, the open interest changed by 2 which increased total open position to 31

On 14 Jan NATIONALUM was trading at 373.55. The strike last trading price was 17.45, which was 7.45 higher than the previous day. The implied volatity was 32.03, the open interest changed by 10 which increased total open position to 29

On 13 Jan NATIONALUM was trading at 357.40. The strike last trading price was 10, which was 2 higher than the previous day. The implied volatity was 32.4, the open interest changed by -2 which decreased total open position to 19

On 12 Jan NATIONALUM was trading at 350.05. The strike last trading price was 8, which was -0.3 lower than the previous day. The implied volatity was 32.81, the open interest changed by -1 which decreased total open position to 21

On 9 Jan NATIONALUM was trading at 348.05. The strike last trading price was 8.6, which was 3.15 higher than the previous day. The implied volatity was 33.93, the open interest changed by 0 which decreased total open position to 22

On 8 Jan NATIONALUM was trading at 333.50. The strike last trading price was 5.45, which was -4.35 lower than the previous day. The implied volatity was 36.57, the open interest changed by -1 which decreased total open position to 23

On 7 Jan NATIONALUM was trading at 352.60. The strike last trading price was 9.8, which was 1.45 higher than the previous day. The implied volatity was 32.79, the open interest changed by 12 which increased total open position to 23

On 6 Jan NATIONALUM was trading at 346.70. The strike last trading price was 8.45, which was 1.9 higher than the previous day. The implied volatity was 32.65, the open interest changed by 11 which increased total open position to 11

NATIONALUM 24FEB2026 375 PE
Delta: -0.47 Vega: 0.35 Theta: -0.41 Gamma: 0.01
Date	Close	Ltp	Change	IV	Volume	OI Chg	OI
4 Feb	373.80	18.6 ₹ 69,750	-2.75 -10312.50	53.77	121 4,53,750	9 33,750	187 7,01,250
3 Feb	370.85	20 ₹ 75,000	-1.75 -6562.50	54.28	168 6,30,000	19 71,250	178 6,67,500
2 Feb	369.70	21 ₹ 78,750	-10.8 -40500.00	55.94	60 2,25,000	-2 -7,500	158 5,92,500
1 Feb	354.20	32.55 ₹ 1,22,062.5	15.5 58125.00	59.24	100 3,75,000	-12 -45,000	160 6,00,000
30 Jan	385.45	17.85 ₹ 66,937.5	12.3 46125.00	57.72	620 23,25,000	-8 -30,000	172 6,45,000
29 Jan	428.85	5.8 ₹ 21,750	-2 -7500.00	56.82	233 8,73,750	91 3,41,250	181 6,78,750
28 Jan	406.15	7.45 ₹ 27,937.5	-6.8 -25500.00	48.47	317 11,88,750	2 7,500	91 3,41,250
27 Jan	384.60	14.3 ₹ 53,625	-6.8 -25500.00	48.41	423 15,86,250	34 1,27,500	92 3,45,000
23 Jan	370.65	20.2 ₹ 75,750	-2.75 -10312.50	45.79	371 13,91,250	46 1,72,500	61 2,28,750
22 Jan	364.60	22.65 ₹ 84,937.5	-38.85 -145687.50	43.33	18 67,500	14 52,500	14 52,500
21 Jan	361.50	61.5 ₹ 2,30,625	0 0.00	-	0 0	0 0	0 0
20 Jan	358.95	61.5 ₹ 2,30,625	0 0.00	-	0 0	0 0	0 0
19 Jan	368.65	61.5 ₹ 2,30,625	0 0.00	-	0 0	0 0	0 0
16 Jan	361.60	61.5 ₹ 2,30,625	0 0.00	0.72	0 0	0 0	0 0
14 Jan	373.55	61.5 ₹ 2,30,625	0 0.00	0.81	0 0	0 0	0 0
13 Jan	357.40	61.5 ₹ 2,30,625	0 0.00	-	0 0	0 0	0 0
12 Jan	350.05	61.5 ₹ 2,30,625	0 0.00	-	0 0	0 0	0 0
9 Jan	348.05	61.5 ₹ 2,30,625	0 0.00	-	0 0	0 0	0 0
8 Jan	333.50	61.5 ₹ 2,30,625	0 0.00	-	0 0	0 0	0 0
7 Jan	352.60	61.5 ₹ 2,30,625	0 0.00	-	0 0	0 0	0 0
6 Jan	346.70	61.5 ₹ 2,30,625	0 0.00	-	0 0	0 0	0 0

For National Aluminium Co Ltd - strike price 375 expiring on 24FEB2026

Delta for 375 PE is -0.47

Historical price for 375 PE is as follows

On 4 Feb NATIONALUM was trading at 373.80. The strike last trading price was 18.6, which was -2.75 lower than the previous day. The implied volatity was 53.77, the open interest changed by 9 which increased total open position to 187

On 3 Feb NATIONALUM was trading at 370.85. The strike last trading price was 20, which was -1.75 lower than the previous day. The implied volatity was 54.28, the open interest changed by 19 which increased total open position to 178

On 2 Feb NATIONALUM was trading at 369.70. The strike last trading price was 21, which was -10.8 lower than the previous day. The implied volatity was 55.94, the open interest changed by -2 which decreased total open position to 158

On 1 Feb NATIONALUM was trading at 354.20. The strike last trading price was 32.55, which was 15.5 higher than the previous day. The implied volatity was 59.24, the open interest changed by -12 which decreased total open position to 160

On 30 Jan NATIONALUM was trading at 385.45. The strike last trading price was 17.85, which was 12.3 higher than the previous day. The implied volatity was 57.72, the open interest changed by -8 which decreased total open position to 172

On 29 Jan NATIONALUM was trading at 428.85. The strike last trading price was 5.8, which was -2 lower than the previous day. The implied volatity was 56.82, the open interest changed by 91 which increased total open position to 181

On 28 Jan NATIONALUM was trading at 406.15. The strike last trading price was 7.45, which was -6.8 lower than the previous day. The implied volatity was 48.47, the open interest changed by 2 which increased total open position to 91

On 27 Jan NATIONALUM was trading at 384.60. The strike last trading price was 14.3, which was -6.8 lower than the previous day. The implied volatity was 48.41, the open interest changed by 34 which increased total open position to 92

On 23 Jan NATIONALUM was trading at 370.65. The strike last trading price was 20.2, which was -2.75 lower than the previous day. The implied volatity was 45.79, the open interest changed by 46 which increased total open position to 61

On 22 Jan NATIONALUM was trading at 364.60. The strike last trading price was 22.65, which was -38.85 lower than the previous day. The implied volatity was 43.33, the open interest changed by 14 which increased total open position to 14

On 21 Jan NATIONALUM was trading at 361.50. The strike last trading price was 61.5, which was 0 lower than the previous day. The implied volatity was -, the open interest changed by 0 which decreased total open position to 0

On 20 Jan NATIONALUM was trading at 358.95. The strike last trading price was 61.5, which was 0 lower than the previous day. The implied volatity was -, the open interest changed by 0 which decreased total open position to 0

On 19 Jan NATIONALUM was trading at 368.65. The strike last trading price was 61.5, which was 0 lower than the previous day. The implied volatity was -, the open interest changed by 0 which decreased total open position to 0

On 16 Jan NATIONALUM was trading at 361.60. The strike last trading price was 61.5, which was 0 lower than the previous day. The implied volatity was 0.72, the open interest changed by 0 which decreased total open position to 0

On 14 Jan NATIONALUM was trading at 373.55. The strike last trading price was 61.5, which was 0 lower than the previous day. The implied volatity was 0.81, the open interest changed by 0 which decreased total open position to 0

On 13 Jan NATIONALUM was trading at 357.40. The strike last trading price was 61.5, which was 0 lower than the previous day. The implied volatity was -, the open interest changed by 0 which decreased total open position to 0

On 12 Jan NATIONALUM was trading at 350.05. The strike last trading price was 61.5, which was 0 lower than the previous day. The implied volatity was -, the open interest changed by 0 which decreased total open position to 0

On 9 Jan NATIONALUM was trading at 348.05. The strike last trading price was 61.5, which was 0 lower than the previous day. The implied volatity was -, the open interest changed by 0 which decreased total open position to 0

On 8 Jan NATIONALUM was trading at 333.50. The strike last trading price was 61.5, which was 0 lower than the previous day. The implied volatity was -, the open interest changed by 0 which decreased total open position to 0

On 7 Jan NATIONALUM was trading at 352.60. The strike last trading price was 61.5, which was 0 lower than the previous day. The implied volatity was -, the open interest changed by 0 which decreased total open position to 0

On 6 Jan NATIONALUM was trading at 346.70. The strike last trading price was 61.5, which was 0 lower than the previous day. The implied volatity was -, the open interest changed by 0 which decreased total open position to 0

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