NATIONALUM

National Aluminium Co Ltd

290.15 -0.15 (-0.05%)

L: 289.5 H: 294.6

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Historical option data for NATIONALUM
23 Dec 2025 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 30-DEC-2025 280 CE
Delta: 0.86 Vega: 0.09 Theta: -0.22 Gamma: 0.02
Date	Close	Ltp	Change	IV	Volume	OI Chg	OI
23 Dec	290.15	11.55 ₹ 43,312.5	-0.05 -187.50	25.41	500 18,75,000	-147 -5,51,250	488 18,30,000
22 Dec	290.30	11.6 ₹ 43,500	7.2 27000.00	21.55	2,653 99,48,750	-488 -18,30,000	636 23,85,000
19 Dec	278.50	4.2 ₹ 15,750	-1 -3750.00	23.42	1,788 67,05,000	20 75,000	1,132 42,45,000
18 Dec	279.25	4.8 ₹ 18,000	-0.85 -3187.50	24.60	3,120 1,17,00,000	-96 -3,60,000	1,111 41,66,250

17 Dec	279.45	5.45 ₹ 20,437.5	0.55 2062.50	26.08	4,342 1,62,82,500	99 3,71,250	1,248 46,80,000
16 Dec	276.85	4.5 ₹ 16,875	-1.55 -5812.50	26.98	1,969 73,83,750	38 1,42,500	1,157 43,38,750
15 Dec	278.70	5.9 ₹ 22,125	-0.25 -937.50	26.51	1,870 70,12,500	90 3,37,500	1,123 42,11,250
12 Dec	278.15	6.15 ₹ 23,062.5	3.95 14812.50	25.58	6,665 2,49,93,750	-99 -3,71,250	1,040 39,00,000
11 Dec	264.30	2.2 ₹ 8,250	0 0.00	28.91	586 21,97,500	-13 -48,750	1,142 42,82,500
10 Dec	263.00	2.1 ₹ 7,875	-0.5 -1875.00	29.05	748 28,05,000	72 2,70,000	1,154 43,27,500
9 Dec	265.65	2.5 ₹ 9,375	-1 -3750.00	28.21	1,129 42,33,750	163 6,11,250	1,072 40,20,000
8 Dec	268.35	3.45 ₹ 12,937.5	-1.55 -5812.50	28.60	1,911 71,66,250	65 2,43,750	912 34,20,000
5 Dec	273.15	5 ₹ 18,750	1.1 4125.00	24.88	2,399 89,96,250	127 4,76,250	845 31,68,750
4 Dec	269.25	3.8 ₹ 14,250	0.25 937.50	25.36	937 35,13,750	17 63,750	719 26,96,250
3 Dec	266.50	3.65 ₹ 13,687.5	0.35 1312.50	25.88	906 33,97,500	13 48,750	701 26,28,750
2 Dec	265.15	3.3 ₹ 12,375	0.15 562.50	27.25	1,242 46,57,500	129 4,83,750	685 25,68,750
1 Dec	263.80	3.15 ₹ 11,812.5	0.7 2625.00	26.98	1,125 42,18,750	-8 -30,000	558 20,92,500
28 Nov	259.98	2.51 ₹ 9,412.5	-0.38 -1425.00	26.65	440 16,50,000	69 2,58,750	553 20,73,750
27 Nov	261.33	2.84 ₹ 10,650	0.67 2512.50	26.98	799 29,96,250	111 4,16,250	484 18,15,000
26 Nov	258.18	2.17 ₹ 8,137.5	0.4 1500.00	26.40	471 17,66,250	-9 -33,750	373 13,98,750
25 Nov	253.97	1.75 ₹ 6,562.5	0.18 675.00	27.06	202 7,57,500	65 2,43,750	383 14,36,250
24 Nov	251.06	1.6 ₹ 6,000	0 0.00	28.82	134 5,02,500	20 75,000	310 11,62,500
21 Nov	250.68	1.6 ₹ 6,000	-1.72 -6450.00	27.72	272 10,20,000	74 2,77,500	292 10,95,000
20 Nov	257.62	3.69 ₹ 13,837.5	0.98 3675.00	29.35	179 6,71,250	40 1,50,000	222 8,32,500
19 Nov	256.60	2.71 ₹ 10,162.5	-0.28 -1050.00	26.55	51 1,91,250	4 15,000	182 6,82,500
18 Nov	257.30	3 ₹ 11,250	-1.28 -4800.00	27.19	145 5,43,750	22 82,500	177 6,63,750
17 Nov	260.76	4.28 ₹ 16,050	-0.64 -2400.00	27.60	106 3,97,500	26 97,500	156 5,85,000
14 Nov	262.57	4.8 ₹ 18,000	-1.32 -4950.00	26.12	71 2,66,250	27 1,01,250	129 4,83,750
13 Nov	268.67	5.95 ₹ 22,312.5	0.52 1950.00	24.17	165 6,18,750	-7 -26,250	103 3,86,250
12 Nov	266.95	5.3 ₹ 19,875	-0.04 -150.00	24.38	133 4,98,750	15 56,250	109 4,08,750
11 Nov	265.66	5.15 ₹ 19,312.5	1.55 5812.50	24.22	156 5,85,000	49 1,83,750	95 3,56,250
10 Nov	257.36	3.7 ₹ 13,875	-0.7 -2625.00	26.86	77 2,88,750	43 1,61,250	43 1,61,250

For National Aluminium Co Ltd - strike price 280 expiring on 30DEC2025

Delta for 280 CE is 0.86

Historical price for 280 CE is as follows

On 23 Dec NATIONALUM was trading at 290.15. The strike last trading price was 11.55, which was -0.05 lower than the previous day. The implied volatity was 25.41, the open interest changed by -147 which decreased total open position to 488

On 22 Dec NATIONALUM was trading at 290.30. The strike last trading price was 11.6, which was 7.2 higher than the previous day. The implied volatity was 21.55, the open interest changed by -488 which decreased total open position to 636

On 19 Dec NATIONALUM was trading at 278.50. The strike last trading price was 4.2, which was -1 lower than the previous day. The implied volatity was 23.42, the open interest changed by 20 which increased total open position to 1132

On 18 Dec NATIONALUM was trading at 279.25. The strike last trading price was 4.8, which was -0.85 lower than the previous day. The implied volatity was 24.60, the open interest changed by -96 which decreased total open position to 1111

On 17 Dec NATIONALUM was trading at 279.45. The strike last trading price was 5.45, which was 0.55 higher than the previous day. The implied volatity was 26.08, the open interest changed by 99 which increased total open position to 1248

On 16 Dec NATIONALUM was trading at 276.85. The strike last trading price was 4.5, which was -1.55 lower than the previous day. The implied volatity was 26.98, the open interest changed by 38 which increased total open position to 1157

On 15 Dec NATIONALUM was trading at 278.70. The strike last trading price was 5.9, which was -0.25 lower than the previous day. The implied volatity was 26.51, the open interest changed by 90 which increased total open position to 1123

On 12 Dec NATIONALUM was trading at 278.15. The strike last trading price was 6.15, which was 3.95 higher than the previous day. The implied volatity was 25.58, the open interest changed by -99 which decreased total open position to 1040

On 11 Dec NATIONALUM was trading at 264.30. The strike last trading price was 2.2, which was 0 lower than the previous day. The implied volatity was 28.91, the open interest changed by -13 which decreased total open position to 1142

On 10 Dec NATIONALUM was trading at 263.00. The strike last trading price was 2.1, which was -0.5 lower than the previous day. The implied volatity was 29.05, the open interest changed by 72 which increased total open position to 1154

On 9 Dec NATIONALUM was trading at 265.65. The strike last trading price was 2.5, which was -1 lower than the previous day. The implied volatity was 28.21, the open interest changed by 163 which increased total open position to 1072

On 8 Dec NATIONALUM was trading at 268.35. The strike last trading price was 3.45, which was -1.55 lower than the previous day. The implied volatity was 28.60, the open interest changed by 65 which increased total open position to 912

On 5 Dec NATIONALUM was trading at 273.15. The strike last trading price was 5, which was 1.1 higher than the previous day. The implied volatity was 24.88, the open interest changed by 127 which increased total open position to 845

On 4 Dec NATIONALUM was trading at 269.25. The strike last trading price was 3.8, which was 0.25 higher than the previous day. The implied volatity was 25.36, the open interest changed by 17 which increased total open position to 719

On 3 Dec NATIONALUM was trading at 266.50. The strike last trading price was 3.65, which was 0.35 higher than the previous day. The implied volatity was 25.88, the open interest changed by 13 which increased total open position to 701

On 2 Dec NATIONALUM was trading at 265.15. The strike last trading price was 3.3, which was 0.15 higher than the previous day. The implied volatity was 27.25, the open interest changed by 129 which increased total open position to 685

On 1 Dec NATIONALUM was trading at 263.80. The strike last trading price was 3.15, which was 0.7 higher than the previous day. The implied volatity was 26.98, the open interest changed by -8 which decreased total open position to 558

On 28 Nov NATIONALUM was trading at 259.98. The strike last trading price was 2.51, which was -0.38 lower than the previous day. The implied volatity was 26.65, the open interest changed by 69 which increased total open position to 553

On 27 Nov NATIONALUM was trading at 261.33. The strike last trading price was 2.84, which was 0.67 higher than the previous day. The implied volatity was 26.98, the open interest changed by 111 which increased total open position to 484

On 26 Nov NATIONALUM was trading at 258.18. The strike last trading price was 2.17, which was 0.4 higher than the previous day. The implied volatity was 26.40, the open interest changed by -9 which decreased total open position to 373

On 25 Nov NATIONALUM was trading at 253.97. The strike last trading price was 1.75, which was 0.18 higher than the previous day. The implied volatity was 27.06, the open interest changed by 65 which increased total open position to 383

On 24 Nov NATIONALUM was trading at 251.06. The strike last trading price was 1.6, which was 0 lower than the previous day. The implied volatity was 28.82, the open interest changed by 20 which increased total open position to 310

On 21 Nov NATIONALUM was trading at 250.68. The strike last trading price was 1.6, which was -1.72 lower than the previous day. The implied volatity was 27.72, the open interest changed by 74 which increased total open position to 292

On 20 Nov NATIONALUM was trading at 257.62. The strike last trading price was 3.69, which was 0.98 higher than the previous day. The implied volatity was 29.35, the open interest changed by 40 which increased total open position to 222

On 19 Nov NATIONALUM was trading at 256.60. The strike last trading price was 2.71, which was -0.28 lower than the previous day. The implied volatity was 26.55, the open interest changed by 4 which increased total open position to 182

On 18 Nov NATIONALUM was trading at 257.30. The strike last trading price was 3, which was -1.28 lower than the previous day. The implied volatity was 27.19, the open interest changed by 22 which increased total open position to 177

On 17 Nov NATIONALUM was trading at 260.76. The strike last trading price was 4.28, which was -0.64 lower than the previous day. The implied volatity was 27.60, the open interest changed by 26 which increased total open position to 156

On 14 Nov NATIONALUM was trading at 262.57. The strike last trading price was 4.8, which was -1.32 lower than the previous day. The implied volatity was 26.12, the open interest changed by 27 which increased total open position to 129

On 13 Nov NATIONALUM was trading at 268.67. The strike last trading price was 5.95, which was 0.52 higher than the previous day. The implied volatity was 24.17, the open interest changed by -7 which decreased total open position to 103

On 12 Nov NATIONALUM was trading at 266.95. The strike last trading price was 5.3, which was -0.04 lower than the previous day. The implied volatity was 24.38, the open interest changed by 15 which increased total open position to 109

On 11 Nov NATIONALUM was trading at 265.66. The strike last trading price was 5.15, which was 1.55 higher than the previous day. The implied volatity was 24.22, the open interest changed by 49 which increased total open position to 95

On 10 Nov NATIONALUM was trading at 257.36. The strike last trading price was 3.7, which was -0.7 lower than the previous day. The implied volatity was 26.86, the open interest changed by 43 which increased total open position to 43

NATIONALUM 30DEC2025 280 PE
Delta: -0.17 Vega: 0.10 Theta: -0.19 Gamma: 0.02
Date	Close	Ltp	Change	IV	Volume	OI Chg	OI
23 Dec	290.15	1.05 ₹ 3,937.5	-0.45 -1687.50	28.98	1,239 46,46,250	-84 -3,15,000	898 33,67,500
22 Dec	290.30	1.45 ₹ 5,437.5	-3.5 -13125.00	31.10	3,404 1,27,65,000	369 13,83,750	978 36,67,500
19 Dec	278.50	4.95 ₹ 18,562.5	-0.3 -1125.00	23.90	777 29,13,750	-16 -60,000	614 23,02,500
18 Dec	279.25	5.65 ₹ 21,187.5	-0.4 -1500.00	27.18	1,540 57,75,000	5 18,750	629 23,58,750
17 Dec	279.45	6 ₹ 22,500	-1.55 -5812.50	28.44	1,256 47,10,000	-164 -6,15,000	636 23,85,000
16 Dec	276.85	7.6 ₹ 28,500	0.85 3187.50	27.79	421 15,78,750	60 2,25,000	801 30,03,750
15 Dec	278.70	6.8 ₹ 25,500	-0.8 -3000.00	29.83	668 25,05,000	-19 -71,250	744 27,90,000
12 Dec	278.15	7.2 ₹ 27,000	-10.9 -40875.00	28.53	768 28,80,000	156 5,85,000	760 28,50,000
11 Dec	264.30	18.1 ₹ 67,875	1.2 4500.00	-	0 0	0 0	604 22,65,000
10 Dec	263.00	18.1 ₹ 67,875	1.2 4500.00	32.96	21 78,750	5 18,750	604 22,65,000
9 Dec	265.65	16.9 ₹ 63,375	3.3 12375.00	33.07	36 1,35,000	9 33,750	599 22,46,250
8 Dec	268.35	13.35 ₹ 50,062.5	3.1 11625.00	24.94	183 6,86,250	40 1,50,000	592 22,20,000
5 Dec	273.15	10.15 ₹ 38,062.5	-3.6 -13500.00	26.00	405 15,18,750	287 10,76,250	552 20,70,000
4 Dec	269.25	13.6 ₹ 51,000	-2.45 -9187.50	29.10	134 5,02,500	90 3,37,500	265 9,93,750
3 Dec	266.50	16 ₹ 60,000	-0.95 -3562.50	34.37	15 56,250	0 0	175 6,56,250
2 Dec	265.15	16.95 ₹ 63,562.5	-0.35 -1312.50	30.40	9 33,750	2 7,500	175 6,56,250
1 Dec	263.80	17.3 ₹ 64,875	-3.06 -11475.00	29.25	10 37,500	4 15,000	173 6,48,750
28 Nov	259.98	20.3 ₹ 76,125	0.68 2550.00	29.34	38 1,42,500	0 0	169 6,33,750
27 Nov	261.33	19.64 ₹ 73,650	-2.26 -8475.00	28.29	220 8,25,000	161 6,03,750	169 6,33,750
26 Nov	258.18	21.9 ₹ 82,125	-6.07 -22762.50	28.00	1 3,750	0 0	8 30,000
25 Nov	253.97	27.97 ₹ 1,04,887.5	4.64 17400.00	-	0 0	0 0	0 0
24 Nov	251.06	27.97 ₹ 1,04,887.5	4.64 17400.00	-	0 0	1 3,750	0 0
21 Nov	250.68	27.97 ₹ 1,04,887.5	4.64 17400.00	26.76	1 3,750	0 0	7 26,250
20 Nov	257.62	23.33 ₹ 87,487.5	-1.66 -6225.00	34.05	1 3,750	0 0	6 22,500
19 Nov	256.60	24.99 ₹ 93,712.5	1.49 5587.50	35.93	1 3,750	0 0	5 18,750
18 Nov	257.30	23.5 ₹ 88,125	1.73 6487.50	30.86	4 15,000	0 0	3 11,250
17 Nov	260.76	21.77 ₹ 81,637.5	2.32 8700.00	34.36	3 11,250	1 3,750	2 7,500
14 Nov	262.57	19.49 ₹ 73,087.5	1.31 4912.50	31.07	5 18,750	0 0	1 3,750
13 Nov	268.67	18.18 ₹ 68,175	-48.12 -180450.00	35.42	2 7,500	1 3,750	1 3,750
12 Nov	266.95	66.3 ₹ 2,48,625	0 0.00	-	0 0	0 0	0 0
11 Nov	265.66	66.3 ₹ 2,48,625	0 0.00	-	0 0	0 0	0 0
10 Nov	257.36	0 ₹ 0	0 0.00	-	0 0	0 0	0 0

For National Aluminium Co Ltd - strike price 280 expiring on 30DEC2025

Delta for 280 PE is -0.17

Historical price for 280 PE is as follows

On 23 Dec NATIONALUM was trading at 290.15. The strike last trading price was 1.05, which was -0.45 lower than the previous day. The implied volatity was 28.98, the open interest changed by -84 which decreased total open position to 898

On 22 Dec NATIONALUM was trading at 290.30. The strike last trading price was 1.45, which was -3.5 lower than the previous day. The implied volatity was 31.10, the open interest changed by 369 which increased total open position to 978

On 19 Dec NATIONALUM was trading at 278.50. The strike last trading price was 4.95, which was -0.3 lower than the previous day. The implied volatity was 23.90, the open interest changed by -16 which decreased total open position to 614

On 18 Dec NATIONALUM was trading at 279.25. The strike last trading price was 5.65, which was -0.4 lower than the previous day. The implied volatity was 27.18, the open interest changed by 5 which increased total open position to 629

On 17 Dec NATIONALUM was trading at 279.45. The strike last trading price was 6, which was -1.55 lower than the previous day. The implied volatity was 28.44, the open interest changed by -164 which decreased total open position to 636

On 16 Dec NATIONALUM was trading at 276.85. The strike last trading price was 7.6, which was 0.85 higher than the previous day. The implied volatity was 27.79, the open interest changed by 60 which increased total open position to 801

On 15 Dec NATIONALUM was trading at 278.70. The strike last trading price was 6.8, which was -0.8 lower than the previous day. The implied volatity was 29.83, the open interest changed by -19 which decreased total open position to 744

On 12 Dec NATIONALUM was trading at 278.15. The strike last trading price was 7.2, which was -10.9 lower than the previous day. The implied volatity was 28.53, the open interest changed by 156 which increased total open position to 760

On 11 Dec NATIONALUM was trading at 264.30. The strike last trading price was 18.1, which was 1.2 higher than the previous day. The implied volatity was -, the open interest changed by 0 which decreased total open position to 604

On 10 Dec NATIONALUM was trading at 263.00. The strike last trading price was 18.1, which was 1.2 higher than the previous day. The implied volatity was 32.96, the open interest changed by 5 which increased total open position to 604

On 9 Dec NATIONALUM was trading at 265.65. The strike last trading price was 16.9, which was 3.3 higher than the previous day. The implied volatity was 33.07, the open interest changed by 9 which increased total open position to 599

On 8 Dec NATIONALUM was trading at 268.35. The strike last trading price was 13.35, which was 3.1 higher than the previous day. The implied volatity was 24.94, the open interest changed by 40 which increased total open position to 592

On 5 Dec NATIONALUM was trading at 273.15. The strike last trading price was 10.15, which was -3.6 lower than the previous day. The implied volatity was 26.00, the open interest changed by 287 which increased total open position to 552

On 4 Dec NATIONALUM was trading at 269.25. The strike last trading price was 13.6, which was -2.45 lower than the previous day. The implied volatity was 29.10, the open interest changed by 90 which increased total open position to 265

On 3 Dec NATIONALUM was trading at 266.50. The strike last trading price was 16, which was -0.95 lower than the previous day. The implied volatity was 34.37, the open interest changed by 0 which decreased total open position to 175

On 2 Dec NATIONALUM was trading at 265.15. The strike last trading price was 16.95, which was -0.35 lower than the previous day. The implied volatity was 30.40, the open interest changed by 2 which increased total open position to 175

On 1 Dec NATIONALUM was trading at 263.80. The strike last trading price was 17.3, which was -3.06 lower than the previous day. The implied volatity was 29.25, the open interest changed by 4 which increased total open position to 173

On 28 Nov NATIONALUM was trading at 259.98. The strike last trading price was 20.3, which was 0.68 higher than the previous day. The implied volatity was 29.34, the open interest changed by 0 which decreased total open position to 169

On 27 Nov NATIONALUM was trading at 261.33. The strike last trading price was 19.64, which was -2.26 lower than the previous day. The implied volatity was 28.29, the open interest changed by 161 which increased total open position to 169

On 26 Nov NATIONALUM was trading at 258.18. The strike last trading price was 21.9, which was -6.07 lower than the previous day. The implied volatity was 28.00, the open interest changed by 0 which decreased total open position to 8

On 25 Nov NATIONALUM was trading at 253.97. The strike last trading price was 27.97, which was 4.64 higher than the previous day. The implied volatity was -, the open interest changed by 0 which decreased total open position to 0

On 24 Nov NATIONALUM was trading at 251.06. The strike last trading price was 27.97, which was 4.64 higher than the previous day. The implied volatity was -, the open interest changed by 1 which increased total open position to 0

On 21 Nov NATIONALUM was trading at 250.68. The strike last trading price was 27.97, which was 4.64 higher than the previous day. The implied volatity was 26.76, the open interest changed by 0 which decreased total open position to 7

On 20 Nov NATIONALUM was trading at 257.62. The strike last trading price was 23.33, which was -1.66 lower than the previous day. The implied volatity was 34.05, the open interest changed by 0 which decreased total open position to 6

On 19 Nov NATIONALUM was trading at 256.60. The strike last trading price was 24.99, which was 1.49 higher than the previous day. The implied volatity was 35.93, the open interest changed by 0 which decreased total open position to 5

On 18 Nov NATIONALUM was trading at 257.30. The strike last trading price was 23.5, which was 1.73 higher than the previous day. The implied volatity was 30.86, the open interest changed by 0 which decreased total open position to 3

On 17 Nov NATIONALUM was trading at 260.76. The strike last trading price was 21.77, which was 2.32 higher than the previous day. The implied volatity was 34.36, the open interest changed by 1 which increased total open position to 2

On 14 Nov NATIONALUM was trading at 262.57. The strike last trading price was 19.49, which was 1.31 higher than the previous day. The implied volatity was 31.07, the open interest changed by 0 which decreased total open position to 1

On 13 Nov NATIONALUM was trading at 268.67. The strike last trading price was 18.18, which was -48.12 lower than the previous day. The implied volatity was 35.42, the open interest changed by 1 which increased total open position to 1

On 12 Nov NATIONALUM was trading at 266.95. The strike last trading price was 66.3, 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 11 Nov NATIONALUM was trading at 265.66. The strike last trading price was 66.3, 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 10 Nov NATIONALUM was trading at 257.36. The strike last trading price was 0, 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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