NATIONALUM

National Aluminium Co Ltd

428.85 +22.70 (5.59%)

L: 411.55 H: 431.5

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Historical option data for NATIONALUM
29 Jan 2026 04:10 PM 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 395 CE
Delta: 0.84 Vega: 0.28 Theta: -0.27 Gamma: 0.01
Date	Close	Ltp	Change	IV	Volume	OI Chg	OI
29 Jan	428.85	39.6 ₹ 1,48,500	15.95 59812.50	34.5	119 4,46,250	-30 -1,12,500	235 8,81,250
28 Jan	406.15	24.2 ₹ 90,750	11.9 44625.00	34.89	1,623 60,86,250	88 3,30,000	267 10,01,250
27 Jan	384.60	12.55 ₹ 47,062.5	4.3 16125.00	36.39	293 10,98,750	26 97,500	177 6,63,750
23 Jan	370.65	8.35 ₹ 31,312.5	2.35 8812.50	36.57	321 12,03,750	-2 -7,500	151 5,66,250
22 Jan	364.60	6 ₹ 22,500	-0.1 -375.00	34.96	68 2,55,000	-5 -18,750	154 5,77,500
21 Jan	361.50	6.25 ₹ 23,437.5	0.65 2437.50	36.56	175 6,56,250	-24 -90,000	158 5,92,500
20 Jan	358.95	5.6 ₹ 21,000	-2.4 -9000.00	37.11	58 2,17,500	13 48,750	182 6,82,500
19 Jan	368.65	8 ₹ 30,000	0.75 2812.50	35.57	27 1,01,250	-3 -11,250	170 6,37,500
16 Jan	361.60	7.25 ₹ 27,187.5	-3.35 -12562.50	37.32	126 4,72,500	18 67,500	174 6,52,500
14 Jan	373.55	10.5 ₹ 39,375	4.3 16125.00	34.58	429 16,08,750	109 4,08,750	158 5,92,500
13 Jan	357.40	6.2 ₹ 23,250	1 3750.00	36.25	24 90,000	-1 -3,750	48 1,80,000
12 Jan	350.05	5.2 ₹ 19,500	0.25 937.50	36.77	22 82,500	-3 -11,250	49 1,83,750
9 Jan	348.05	5 ₹ 18,750	1.55 5812.50	36.02	60 2,25,000	16 60,000	55 2,06,250

8 Jan	333.50	3.45 ₹ 12,937.5	-2.2 -8250.00	39.69	56 2,10,000	27 1,01,250	40 1,50,000
7 Jan	352.60	5.65 ₹ 21,187.5	1.75 6562.50	34.59	21 78,750	13 48,750	13 48,750

For National Aluminium Co Ltd - strike price 395 expiring on 24FEB2026

Delta for 395 CE is 0.84

Historical price for 395 CE is as follows

On 29 Jan NATIONALUM was trading at 428.85. The strike last trading price was 39.6, which was 15.95 higher than the previous day. The implied volatity was 34.5, the open interest changed by -30 which decreased total open position to 235

On 28 Jan NATIONALUM was trading at 406.15. The strike last trading price was 24.2, which was 11.9 higher than the previous day. The implied volatity was 34.89, the open interest changed by 88 which increased total open position to 267

On 27 Jan NATIONALUM was trading at 384.60. The strike last trading price was 12.55, which was 4.3 higher than the previous day. The implied volatity was 36.39, the open interest changed by 26 which increased total open position to 177

On 23 Jan NATIONALUM was trading at 370.65. The strike last trading price was 8.35, which was 2.35 higher than the previous day. The implied volatity was 36.57, the open interest changed by -2 which decreased total open position to 151

On 22 Jan NATIONALUM was trading at 364.60. The strike last trading price was 6, which was -0.1 lower than the previous day. The implied volatity was 34.96, the open interest changed by -5 which decreased total open position to 154

On 21 Jan NATIONALUM was trading at 361.50. The strike last trading price was 6.25, which was 0.65 higher than the previous day. The implied volatity was 36.56, the open interest changed by -24 which decreased total open position to 158

On 20 Jan NATIONALUM was trading at 358.95. The strike last trading price was 5.6, which was -2.4 lower than the previous day. The implied volatity was 37.11, the open interest changed by 13 which increased total open position to 182

On 19 Jan NATIONALUM was trading at 368.65. The strike last trading price was 8, which was 0.75 higher than the previous day. The implied volatity was 35.57, the open interest changed by -3 which decreased total open position to 170

On 16 Jan NATIONALUM was trading at 361.60. The strike last trading price was 7.25, which was -3.35 lower than the previous day. The implied volatity was 37.32, the open interest changed by 18 which increased total open position to 174

On 14 Jan NATIONALUM was trading at 373.55. The strike last trading price was 10.5, which was 4.3 higher than the previous day. The implied volatity was 34.58, the open interest changed by 109 which increased total open position to 158

On 13 Jan NATIONALUM was trading at 357.40. The strike last trading price was 6.2, which was 1 higher than the previous day. The implied volatity was 36.25, the open interest changed by -1 which decreased total open position to 48

On 12 Jan NATIONALUM was trading at 350.05. The strike last trading price was 5.2, which was 0.25 higher than the previous day. The implied volatity was 36.77, the open interest changed by -3 which decreased total open position to 49

On 9 Jan NATIONALUM was trading at 348.05. The strike last trading price was 5, which was 1.55 higher than the previous day. The implied volatity was 36.02, the open interest changed by 16 which increased total open position to 55

On 8 Jan NATIONALUM was trading at 333.50. The strike last trading price was 3.45, which was -2.2 lower than the previous day. The implied volatity was 39.69, the open interest changed by 27 which increased total open position to 40

On 7 Jan NATIONALUM was trading at 352.60. The strike last trading price was 5.65, which was 1.75 higher than the previous day. The implied volatity was 34.59, the open interest changed by 13 which increased total open position to 13

NATIONALUM 24FEB2026 395 PE
Delta: -0.26 Vega: 0.37 Theta: -0.37 Gamma: 0
Date	Close	Ltp	Change	IV	Volume	OI Chg	OI
29 Jan	428.85	10.8 ₹ 40,500	-4 -15000.00	56.89	292 10,95,000	19 71,250	111 4,16,250
28 Jan	406.15	14.4 ₹ 54,000	-15.1 -56625.00	49.14	356 13,35,000	77 2,88,750	91 3,41,250
27 Jan	384.60	29.5 ₹ 1,10,625	-2.8 -10500.00	60.79	7 26,250	-3 -11,250	13 48,750
23 Jan	370.65	32.3 ₹ 1,21,125	-7.55 -28312.50	46.09	11 41,250	-6 -22,500	16 60,000
22 Jan	364.60	39.8 ₹ 1,49,250	2.3 8625.00	-	0 0	0 0	22 82,500
21 Jan	361.50	39.8 ₹ 1,49,250	2.3 8625.00	49.76	4 15,000	3 11,250	22 82,500
20 Jan	358.95	37.5 ₹ 1,40,625	-1.5 -5625.00	35.42	12 45,000	9 33,750	18 67,500
19 Jan	368.65	39 ₹ 1,46,250	-3.15 -11812.50	55.23	2 7,500	0 0	9 33,750
16 Jan	361.60	42.15 ₹ 1,58,062.5	7.95 29812.50	50.63	6 22,500	4 15,000	8 30,000
14 Jan	373.55	34.2 ₹ 1,28,250	-13.85 -51937.50	48.75	4 15,000	2 7,500	3 11,250
13 Jan	357.40	48.05 ₹ 1,80,187.5	-30.6 -114750.00	-	0 0	0 0	0 0
12 Jan	350.05	48.05 ₹ 1,80,187.5	-30.6 -114750.00	-	0 0	0 0	1 3,750
9 Jan	348.05	48.05 ₹ 1,80,187.5	-30.6 -114750.00	-	0 0	0 0	1 3,750
8 Jan	333.50	48.05 ₹ 1,80,187.5	-30.6 -114750.00	-	0 0	0 0	1 3,750
7 Jan	352.60	48.05 ₹ 1,80,187.5	-30.6 -114750.00	47.42	1 3,750	0 0	0 0

For National Aluminium Co Ltd - strike price 395 expiring on 24FEB2026

Delta for 395 PE is -0.26

Historical price for 395 PE is as follows

On 29 Jan NATIONALUM was trading at 428.85. The strike last trading price was 10.8, which was -4 lower than the previous day. The implied volatity was 56.89, the open interest changed by 19 which increased total open position to 111

On 28 Jan NATIONALUM was trading at 406.15. The strike last trading price was 14.4, which was -15.1 lower than the previous day. The implied volatity was 49.14, the open interest changed by 77 which increased total open position to 91

On 27 Jan NATIONALUM was trading at 384.60. The strike last trading price was 29.5, which was -2.8 lower than the previous day. The implied volatity was 60.79, the open interest changed by -3 which decreased total open position to 13

On 23 Jan NATIONALUM was trading at 370.65. The strike last trading price was 32.3, which was -7.55 lower than the previous day. The implied volatity was 46.09, the open interest changed by -6 which decreased total open position to 16

On 22 Jan NATIONALUM was trading at 364.60. The strike last trading price was 39.8, which was 2.3 higher than the previous day. The implied volatity was -, the open interest changed by 0 which decreased total open position to 22

On 21 Jan NATIONALUM was trading at 361.50. The strike last trading price was 39.8, which was 2.3 higher than the previous day. The implied volatity was 49.76, the open interest changed by 3 which increased total open position to 22

On 20 Jan NATIONALUM was trading at 358.95. The strike last trading price was 37.5, which was -1.5 lower than the previous day. The implied volatity was 35.42, the open interest changed by 9 which increased total open position to 18

On 19 Jan NATIONALUM was trading at 368.65. The strike last trading price was 39, which was -3.15 lower than the previous day. The implied volatity was 55.23, the open interest changed by 0 which decreased total open position to 9

On 16 Jan NATIONALUM was trading at 361.60. The strike last trading price was 42.15, which was 7.95 higher than the previous day. The implied volatity was 50.63, the open interest changed by 4 which increased total open position to 8

On 14 Jan NATIONALUM was trading at 373.55. The strike last trading price was 34.2, which was -13.85 lower than the previous day. The implied volatity was 48.75, the open interest changed by 2 which increased total open position to 3

On 13 Jan NATIONALUM was trading at 357.40. The strike last trading price was 48.05, which was -30.6 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 48.05, which was -30.6 lower than the previous day. The implied volatity was -, the open interest changed by 0 which decreased total open position to 1

On 9 Jan NATIONALUM was trading at 348.05. The strike last trading price was 48.05, which was -30.6 lower than the previous day. The implied volatity was -, the open interest changed by 0 which decreased total open position to 1

On 8 Jan NATIONALUM was trading at 333.50. The strike last trading price was 48.05, which was -30.6 lower than the previous day. The implied volatity was -, the open interest changed by 0 which decreased total open position to 1

On 7 Jan NATIONALUM was trading at 352.60. The strike last trading price was 48.05, which was -30.6 lower than the previous day. The implied volatity was 47.42, the open interest changed by 0 which decreased total open position to 0

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