BANKNIFTY
Nifty Bank
Historical option data for BANKNIFTY
26 Dec 2024 04:13 PM IST
BANKNIFTY 29JAN2025 51200 CE | ||||||||||
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Delta: 0.60
Vega: 60.53
Theta: -20.60
Gamma: 0.00
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Date | Close | Ltp | Change | IV | Volume | Change OI | OI | |||
26 Dec | 51170.70 | 1140 | -66.05 | 14.09 | 1,74,370 | 7,421 | 20,147 | |||
24 Dec | 51233.00 | 1206.05 | -57.20 | 13.66 | 51,247 | 10,419 | 12,891 | |||
23 Dec | 51317.60 | 1263.25 | 161.25 | 14.18 | 13,040 | 915 | 2,488 | |||
20 Dec | 50759.20 | 1102 | -551.15 | 14.72 | 4,930 | 1,193 | 1,589 | |||
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19 Dec | 51575.70 | 1653.15 | -452.40 | 15.98 | 1,466 | 332 | 394 | |||
18 Dec | 52139.55 | 2105.55 | -494.45 | 16.35 | 74 | 45 | 63 | |||
17 Dec | 52834.80 | 2600 | -493.05 | 16.97 | 14 | 1 | 6 | |||
16 Dec | 53581.35 | 3093.05 | 0.00 | 0.00 | 0 | 0 | 0 | |||
13 Dec | 53583.80 | 3093.05 | 0.00 | 0.00 | 0 | 0 | 0 | |||
12 Dec | 53216.45 | 3093.05 | 0.00 | 0.00 | 0 | 0 | 0 | |||
11 Dec | 53391.35 | 3093.05 | 0.00 | 0.00 | 0 | 0 | 0 | |||
10 Dec | 53577.70 | 3093.05 | 0.00 | 0.00 | 0 | 0 | 0 | |||
9 Dec | 53407.75 | 3093.05 | 0.00 | 0.00 | 0 | 0 | 0 | |||
6 Dec | 53509.50 | 3093.05 | 226.25 | 9.69 | 1 | 0 | 5 | |||
5 Dec | 53603.55 | 2866.8 | -49.60 | - | 1 | 0 | 4 | |||
4 Dec | 53266.90 | 2916.4 | 330.25 | 10.74 | 7 | 0 | 4 | |||
3 Dec | 52695.75 | 2586.15 | 398.65 | 13.72 | 2 | 0 | 4 | |||
2 Dec | 52109.00 | 2187.5 | 0.00 | 0.00 | 0 | -1 | 0 | |||
29 Nov | 52055.60 | 2187.5 | -109.05 | 13.96 | 1 | 0 | 5 | |||
28 Nov | 51906.85 | 2296.55 | 51.55 | 15.62 | 9 | 1 | 13 | |||
27 Nov | 52301.80 | 2245 | 0.00 | 0.00 | 0 | 0 | 0 | |||
26 Nov | 52191.50 | 2245 | 0.00 | 0.00 | 0 | 6 | 0 | |||
25 Nov | 52207.50 | 2245 | 562.00 | 11.98 | 13 | 2 | 4 | |||
22 Nov | 51135.40 | 1683 | 425.45 | 13.95 | 9 | 4 | 6 | |||
21 Nov | 50372.90 | 1257.55 | -187.40 | 13.18 | 2 | 1 | 3 | |||
19 Nov | 50626.50 | 1444.95 | -64.25 | 14.76 | 1 | 0 | 1 | |||
18 Nov | 50363.80 | 1509.2 | -1443.50 | 16.02 | 1 | 0 | 0 | |||
14 Nov | 50179.55 | 2952.7 | 0.00 | - | 0 | 0 | 0 | |||
13 Nov | 50088.35 | 2952.7 | 0.00 | - | 0 | 0 | 0 | |||
12 Nov | 51157.80 | 2952.7 | 0.00 | - | 0 | 0 | 0 | |||
11 Nov | 51876.75 | 2952.7 | 0.00 | - | 0 | 0 | 0 | |||
8 Nov | 51561.20 | 2952.7 | 0.00 | - | 0 | 0 | 0 | |||
7 Nov | 51916.50 | 2952.7 | 0.00 | - | 0 | 0 | 0 | |||
6 Nov | 52317.40 | 2952.7 | 0.00 | - | 0 | 0 | 0 | |||
5 Nov | 52207.25 | 2952.7 | 0.00 | - | 0 | 0 | 0 | |||
4 Nov | 51215.25 | 2952.7 | 0.00 | - | 0 | 0 | 0 | |||
1 Nov | 51673.90 | 2952.7 | 0.00 | - | 0 | 0 | 0 | |||
31 Oct | 51559.20 | 2952.70 | - | 0 | 0 | 0 |
For Nifty Bank - strike price 51200 expiring on 29JAN2025
Delta for 51200 CE is 0.60
Historical price for 51200 CE is as follows
On 26 Dec BANKNIFTY was trading at 51170.70. The strike last trading price was 1140, which was -66.05 lower than the previous day. The implied volatity was 14.09, the open interest changed by 7421 which increased total open position to 20147
On 24 Dec BANKNIFTY was trading at 51233.00. The strike last trading price was 1206.05, which was -57.20 lower than the previous day. The implied volatity was 13.66, the open interest changed by 10419 which increased total open position to 12891
On 23 Dec BANKNIFTY was trading at 51317.60. The strike last trading price was 1263.25, which was 161.25 higher than the previous day. The implied volatity was 14.18, the open interest changed by 915 which increased total open position to 2488
On 20 Dec BANKNIFTY was trading at 50759.20. The strike last trading price was 1102, which was -551.15 lower than the previous day. The implied volatity was 14.72, the open interest changed by 1193 which increased total open position to 1589
On 19 Dec BANKNIFTY was trading at 51575.70. The strike last trading price was 1653.15, which was -452.40 lower than the previous day. The implied volatity was 15.98, the open interest changed by 332 which increased total open position to 394
On 18 Dec BANKNIFTY was trading at 52139.55. The strike last trading price was 2105.55, which was -494.45 lower than the previous day. The implied volatity was 16.35, the open interest changed by 45 which increased total open position to 63
On 17 Dec BANKNIFTY was trading at 52834.80. The strike last trading price was 2600, which was -493.05 lower than the previous day. The implied volatity was 16.97, the open interest changed by 1 which increased total open position to 6
On 16 Dec BANKNIFTY was trading at 53581.35. The strike last trading price was 3093.05, which was 0.00 lower than the previous day. The implied volatity was 0.00, the open interest changed by 0 which decreased total open position to 0
On 13 Dec BANKNIFTY was trading at 53583.80. The strike last trading price was 3093.05, which was 0.00 lower than the previous day. The implied volatity was 0.00, the open interest changed by 0 which decreased total open position to 0
On 12 Dec BANKNIFTY was trading at 53216.45. The strike last trading price was 3093.05, which was 0.00 lower than the previous day. The implied volatity was 0.00, the open interest changed by 0 which decreased total open position to 0
On 11 Dec BANKNIFTY was trading at 53391.35. The strike last trading price was 3093.05, which was 0.00 lower than the previous day. The implied volatity was 0.00, the open interest changed by 0 which decreased total open position to 0
On 10 Dec BANKNIFTY was trading at 53577.70. The strike last trading price was 3093.05, which was 0.00 lower than the previous day. The implied volatity was 0.00, the open interest changed by 0 which decreased total open position to 0
On 9 Dec BANKNIFTY was trading at 53407.75. The strike last trading price was 3093.05, which was 0.00 lower than the previous day. The implied volatity was 0.00, the open interest changed by 0 which decreased total open position to 0
On 6 Dec BANKNIFTY was trading at 53509.50. The strike last trading price was 3093.05, which was 226.25 higher than the previous day. The implied volatity was 9.69, the open interest changed by 0 which decreased total open position to 5
On 5 Dec BANKNIFTY was trading at 53603.55. The strike last trading price was 2866.8, which was -49.60 lower than the previous day. The implied volatity was -, the open interest changed by 0 which decreased total open position to 4
On 4 Dec BANKNIFTY was trading at 53266.90. The strike last trading price was 2916.4, which was 330.25 higher than the previous day. The implied volatity was 10.74, the open interest changed by 0 which decreased total open position to 4
On 3 Dec BANKNIFTY was trading at 52695.75. The strike last trading price was 2586.15, which was 398.65 higher than the previous day. The implied volatity was 13.72, the open interest changed by 0 which decreased total open position to 4
On 2 Dec BANKNIFTY was trading at 52109.00. The strike last trading price was 2187.5, which was 0.00 lower than the previous day. The implied volatity was 0.00, the open interest changed by -1 which decreased total open position to 0
On 29 Nov BANKNIFTY was trading at 52055.60. The strike last trading price was 2187.5, which was -109.05 lower than the previous day. The implied volatity was 13.96, the open interest changed by 0 which decreased total open position to 5
On 28 Nov BANKNIFTY was trading at 51906.85. The strike last trading price was 2296.55, which was 51.55 higher than the previous day. The implied volatity was 15.62, the open interest changed by 1 which increased total open position to 13
On 27 Nov BANKNIFTY was trading at 52301.80. The strike last trading price was 2245, which was 0.00 lower than the previous day. The implied volatity was 0.00, the open interest changed by 0 which decreased total open position to 0
On 26 Nov BANKNIFTY was trading at 52191.50. The strike last trading price was 2245, which was 0.00 lower than the previous day. The implied volatity was 0.00, the open interest changed by 6 which increased total open position to 0
On 25 Nov BANKNIFTY was trading at 52207.50. The strike last trading price was 2245, which was 562.00 higher than the previous day. The implied volatity was 11.98, the open interest changed by 2 which increased total open position to 4
On 22 Nov BANKNIFTY was trading at 51135.40. The strike last trading price was 1683, which was 425.45 higher than the previous day. The implied volatity was 13.95, the open interest changed by 4 which increased total open position to 6
On 21 Nov BANKNIFTY was trading at 50372.90. The strike last trading price was 1257.55, which was -187.40 lower than the previous day. The implied volatity was 13.18, the open interest changed by 1 which increased total open position to 3
On 19 Nov BANKNIFTY was trading at 50626.50. The strike last trading price was 1444.95, which was -64.25 lower than the previous day. The implied volatity was 14.76, the open interest changed by 0 which decreased total open position to 1
On 18 Nov BANKNIFTY was trading at 50363.80. The strike last trading price was 1509.2, which was -1443.50 lower than the previous day. The implied volatity was 16.02, the open interest changed by 0 which decreased total open position to 0
On 14 Nov BANKNIFTY was trading at 50179.55. The strike last trading price was 2952.7, which was 0.00 lower than the previous day. The implied volatity was -, the open interest changed by 0 which decreased total open position to 0
On 13 Nov BANKNIFTY was trading at 50088.35. The strike last trading price was 2952.7, which was 0.00 lower than the previous day. The implied volatity was -, the open interest changed by 0 which decreased total open position to 0
On 12 Nov BANKNIFTY was trading at 51157.80. The strike last trading price was 2952.7, which was 0.00 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 BANKNIFTY was trading at 51876.75. The strike last trading price was 2952.7, which was 0.00 lower than the previous day. The implied volatity was -, the open interest changed by 0 which decreased total open position to 0
On 8 Nov BANKNIFTY was trading at 51561.20. The strike last trading price was 2952.7, which was 0.00 lower than the previous day. The implied volatity was -, the open interest changed by 0 which decreased total open position to 0
On 7 Nov BANKNIFTY was trading at 51916.50. The strike last trading price was 2952.7, which was 0.00 lower than the previous day. The implied volatity was -, the open interest changed by 0 which decreased total open position to 0
On 6 Nov BANKNIFTY was trading at 52317.40. The strike last trading price was 2952.7, which was 0.00 lower than the previous day. The implied volatity was -, the open interest changed by 0 which decreased total open position to 0
On 5 Nov BANKNIFTY was trading at 52207.25. The strike last trading price was 2952.7, which was 0.00 lower than the previous day. The implied volatity was -, the open interest changed by 0 which decreased total open position to 0
On 4 Nov BANKNIFTY was trading at 51215.25. The strike last trading price was 2952.7, which was 0.00 lower than the previous day. The implied volatity was -, the open interest changed by 0 which decreased total open position to 0
On 1 Nov BANKNIFTY was trading at 51673.90. The strike last trading price was 2952.7, which was 0.00 lower than the previous day. The implied volatity was -, the open interest changed by 0 which decreased total open position to 0
On 31 Oct BANKNIFTY was trading at 51559.20. The strike last trading price was 2952.70, which was lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
BANKNIFTY 29JAN2025 51200 PE | |||||||
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Delta: -0.41
Vega: 60.85
Theta: -8.26
Gamma: 0.00
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Date | Close | Ltp | Change | IV | Volume | Change OI | OI |
26 Dec | 51170.70 | 764 | 119.00 | 15.93 | 3,27,125 | 5,403 | 19,205 |
24 Dec | 51233.00 | 645 | -61.45 | 14.31 | 62,933 | 10,786 | 14,095 |
23 Dec | 51317.60 | 706.45 | -318.85 | 15.24 | 17,290 | 1,739 | 3,393 |
20 Dec | 50759.20 | 1025.3 | 346.20 | 16.91 | 7,908 | 385 | 1,659 |
19 Dec | 51575.70 | 679.1 | 171.30 | 16.12 | 3,000 | 796 | 1,284 |
18 Dec | 52139.55 | 507.8 | 125.15 | 16.24 | 1,000 | 161 | 488 |
17 Dec | 52834.80 | 382.65 | 113.70 | 16.45 | 528 | -191 | 331 |
16 Dec | 53581.35 | 268.95 | 4.05 | 16.68 | 395 | 82 | 526 |
13 Dec | 53583.80 | 264.9 | -90.15 | 16.67 | 292 | 3 | 445 |
12 Dec | 53216.45 | 355.05 | 32.55 | 16.94 | 16 | -1 | 442 |
11 Dec | 53391.35 | 322.5 | -44.95 | 16.82 | 118 | -70 | 447 |
10 Dec | 53577.70 | 367.45 | -9.05 | 18.35 | 41 | 7 | 517 |
9 Dec | 53407.75 | 376.5 | 25.80 | 17.70 | 5 | 0 | 511 |
6 Dec | 53509.50 | 350.7 | -14.95 | 17.12 | 337 | 126 | 510 |
5 Dec | 53603.55 | 365.65 | -58.15 | 17.64 | 254 | 134 | 365 |
4 Dec | 53266.90 | 423.8 | -122.35 | 17.36 | 76 | 19 | 225 |
3 Dec | 52695.75 | 546.15 | -134.45 | 17.23 | 400 | -56 | 214 |
2 Dec | 52109.00 | 680.6 | 3.10 | 16.87 | 21 | 4 | 272 |
29 Nov | 52055.60 | 677.5 | -31.00 | 16.20 | 218 | 93 | 269 |
28 Nov | 51906.85 | 708.5 | 128.40 | 16.35 | 185 | 146 | 177 |
27 Nov | 52301.80 | 580.1 | -64.95 | 15.78 | 5 | 1 | 30 |
26 Nov | 52191.50 | 645.05 | -87.50 | 16.16 | 25 | 5 | 30 |
25 Nov | 52207.50 | 732.55 | -347.40 | 17.30 | 16 | 18 | 23 |
22 Nov | 51135.40 | 1079.95 | -320.05 | 16.77 | 11 | 8 | 13 |
21 Nov | 50372.90 | 1400 | 0.00 | 0.00 | 0 | 0 | 0 |
19 Nov | 50626.50 | 1400 | 0.00 | 0.00 | 0 | 0 | 0 |
18 Nov | 50363.80 | 1400 | 0.00 | 0.00 | 0 | 1 | 0 |
14 Nov | 50179.55 | 1400 | 387.25 | 15.72 | 17 | 2 | 6 |
13 Nov | 50088.35 | 1012.75 | 0.00 | 0.00 | 0 | 2 | 0 |
12 Nov | 51157.80 | 1012.75 | 337.40 | 15.64 | 3 | 1 | 3 |
11 Nov | 51876.75 | 675.35 | -224.65 | 14.41 | 1 | 0 | 1 |
8 Nov | 51561.20 | 900 | -248.00 | 15.83 | 1 | 0 | 0 |
7 Nov | 51916.50 | 1148 | 0.00 | 0.00 | 0 | 0 | 0 |
6 Nov | 52317.40 | 1148 | 0.00 | 0.00 | 0 | 0 | 0 |
5 Nov | 52207.25 | 1148 | 0.00 | 0.00 | 0 | 0 | 0 |
4 Nov | 51215.25 | 1148 | -276.30 | 17.24 | 2 | 1 | 1 |
1 Nov | 51673.90 | 1424.3 | 0.00 | 1.53 | 0 | 0 | 0 |
31 Oct | 51559.20 | 1424.30 | - | 0 | 0 | 0 |
For Nifty Bank - strike price 51200 expiring on 29JAN2025
Delta for 51200 PE is -0.41
Historical price for 51200 PE is as follows
On 26 Dec BANKNIFTY was trading at 51170.70. The strike last trading price was 764, which was 119.00 higher than the previous day. The implied volatity was 15.93, the open interest changed by 5403 which increased total open position to 19205
On 24 Dec BANKNIFTY was trading at 51233.00. The strike last trading price was 645, which was -61.45 lower than the previous day. The implied volatity was 14.31, the open interest changed by 10786 which increased total open position to 14095
On 23 Dec BANKNIFTY was trading at 51317.60. The strike last trading price was 706.45, which was -318.85 lower than the previous day. The implied volatity was 15.24, the open interest changed by 1739 which increased total open position to 3393
On 20 Dec BANKNIFTY was trading at 50759.20. The strike last trading price was 1025.3, which was 346.20 higher than the previous day. The implied volatity was 16.91, the open interest changed by 385 which increased total open position to 1659
On 19 Dec BANKNIFTY was trading at 51575.70. The strike last trading price was 679.1, which was 171.30 higher than the previous day. The implied volatity was 16.12, the open interest changed by 796 which increased total open position to 1284
On 18 Dec BANKNIFTY was trading at 52139.55. The strike last trading price was 507.8, which was 125.15 higher than the previous day. The implied volatity was 16.24, the open interest changed by 161 which increased total open position to 488
On 17 Dec BANKNIFTY was trading at 52834.80. The strike last trading price was 382.65, which was 113.70 higher than the previous day. The implied volatity was 16.45, the open interest changed by -191 which decreased total open position to 331
On 16 Dec BANKNIFTY was trading at 53581.35. The strike last trading price was 268.95, which was 4.05 higher than the previous day. The implied volatity was 16.68, the open interest changed by 82 which increased total open position to 526
On 13 Dec BANKNIFTY was trading at 53583.80. The strike last trading price was 264.9, which was -90.15 lower than the previous day. The implied volatity was 16.67, the open interest changed by 3 which increased total open position to 445
On 12 Dec BANKNIFTY was trading at 53216.45. The strike last trading price was 355.05, which was 32.55 higher than the previous day. The implied volatity was 16.94, the open interest changed by -1 which decreased total open position to 442
On 11 Dec BANKNIFTY was trading at 53391.35. The strike last trading price was 322.5, which was -44.95 lower than the previous day. The implied volatity was 16.82, the open interest changed by -70 which decreased total open position to 447
On 10 Dec BANKNIFTY was trading at 53577.70. The strike last trading price was 367.45, which was -9.05 lower than the previous day. The implied volatity was 18.35, the open interest changed by 7 which increased total open position to 517
On 9 Dec BANKNIFTY was trading at 53407.75. The strike last trading price was 376.5, which was 25.80 higher than the previous day. The implied volatity was 17.70, the open interest changed by 0 which decreased total open position to 511
On 6 Dec BANKNIFTY was trading at 53509.50. The strike last trading price was 350.7, which was -14.95 lower than the previous day. The implied volatity was 17.12, the open interest changed by 126 which increased total open position to 510
On 5 Dec BANKNIFTY was trading at 53603.55. The strike last trading price was 365.65, which was -58.15 lower than the previous day. The implied volatity was 17.64, the open interest changed by 134 which increased total open position to 365
On 4 Dec BANKNIFTY was trading at 53266.90. The strike last trading price was 423.8, which was -122.35 lower than the previous day. The implied volatity was 17.36, the open interest changed by 19 which increased total open position to 225
On 3 Dec BANKNIFTY was trading at 52695.75. The strike last trading price was 546.15, which was -134.45 lower than the previous day. The implied volatity was 17.23, the open interest changed by -56 which decreased total open position to 214
On 2 Dec BANKNIFTY was trading at 52109.00. The strike last trading price was 680.6, which was 3.10 higher than the previous day. The implied volatity was 16.87, the open interest changed by 4 which increased total open position to 272
On 29 Nov BANKNIFTY was trading at 52055.60. The strike last trading price was 677.5, which was -31.00 lower than the previous day. The implied volatity was 16.20, the open interest changed by 93 which increased total open position to 269
On 28 Nov BANKNIFTY was trading at 51906.85. The strike last trading price was 708.5, which was 128.40 higher than the previous day. The implied volatity was 16.35, the open interest changed by 146 which increased total open position to 177
On 27 Nov BANKNIFTY was trading at 52301.80. The strike last trading price was 580.1, which was -64.95 lower than the previous day. The implied volatity was 15.78, the open interest changed by 1 which increased total open position to 30
On 26 Nov BANKNIFTY was trading at 52191.50. The strike last trading price was 645.05, which was -87.50 lower than the previous day. The implied volatity was 16.16, the open interest changed by 5 which increased total open position to 30
On 25 Nov BANKNIFTY was trading at 52207.50. The strike last trading price was 732.55, which was -347.40 lower than the previous day. The implied volatity was 17.30, the open interest changed by 18 which increased total open position to 23
On 22 Nov BANKNIFTY was trading at 51135.40. The strike last trading price was 1079.95, which was -320.05 lower than the previous day. The implied volatity was 16.77, the open interest changed by 8 which increased total open position to 13
On 21 Nov BANKNIFTY was trading at 50372.90. The strike last trading price was 1400, which was 0.00 lower than the previous day. The implied volatity was 0.00, the open interest changed by 0 which decreased total open position to 0
On 19 Nov BANKNIFTY was trading at 50626.50. The strike last trading price was 1400, which was 0.00 lower than the previous day. The implied volatity was 0.00, the open interest changed by 0 which decreased total open position to 0
On 18 Nov BANKNIFTY was trading at 50363.80. The strike last trading price was 1400, which was 0.00 lower than the previous day. The implied volatity was 0.00, the open interest changed by 1 which increased total open position to 0
On 14 Nov BANKNIFTY was trading at 50179.55. The strike last trading price was 1400, which was 387.25 higher than the previous day. The implied volatity was 15.72, the open interest changed by 2 which increased total open position to 6
On 13 Nov BANKNIFTY was trading at 50088.35. The strike last trading price was 1012.75, which was 0.00 lower than the previous day. The implied volatity was 0.00, the open interest changed by 2 which increased total open position to 0
On 12 Nov BANKNIFTY was trading at 51157.80. The strike last trading price was 1012.75, which was 337.40 higher than the previous day. The implied volatity was 15.64, the open interest changed by 1 which increased total open position to 3
On 11 Nov BANKNIFTY was trading at 51876.75. The strike last trading price was 675.35, which was -224.65 lower than the previous day. The implied volatity was 14.41, the open interest changed by 0 which decreased total open position to 1
On 8 Nov BANKNIFTY was trading at 51561.20. The strike last trading price was 900, which was -248.00 lower than the previous day. The implied volatity was 15.83, the open interest changed by 0 which decreased total open position to 0
On 7 Nov BANKNIFTY was trading at 51916.50. The strike last trading price was 1148, which was 0.00 lower than the previous day. The implied volatity was 0.00, the open interest changed by 0 which decreased total open position to 0
On 6 Nov BANKNIFTY was trading at 52317.40. The strike last trading price was 1148, which was 0.00 lower than the previous day. The implied volatity was 0.00, the open interest changed by 0 which decreased total open position to 0
On 5 Nov BANKNIFTY was trading at 52207.25. The strike last trading price was 1148, which was 0.00 lower than the previous day. The implied volatity was 0.00, the open interest changed by 0 which decreased total open position to 0
On 4 Nov BANKNIFTY was trading at 51215.25. The strike last trading price was 1148, which was -276.30 lower than the previous day. The implied volatity was 17.24, the open interest changed by 1 which increased total open position to 1
On 1 Nov BANKNIFTY was trading at 51673.90. The strike last trading price was 1424.3, which was 0.00 lower than the previous day. The implied volatity was 1.53, the open interest changed by 0 which decreased total open position to 0
On 31 Oct BANKNIFTY was trading at 51559.20. The strike last trading price was 1424.30, which was lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to