BEL
Bharat Electronics Ltd
Historical option data for BEL
14 Nov 2024 04:12 PM IST
BEL 28NOV2024 290 CE | ||||||||||
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Delta: 0.33
Vega: 0.20
Theta: -0.23
Gamma: 0.02
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Date | Close | Ltp | Change | IV | Volume | Change OI | OI | |||
14 Nov | 280.95 | 3.35 | -1.00 | 29.03 | 5,313 | 130 | 2,031 | |||
13 Nov | 281.55 | 4.35 | -2.95 | 31.43 | 5,385 | 517 | 1,914 | |||
12 Nov | 290.15 | 7.3 | -6.90 | 29.05 | 1,625 | 174 | 1,415 | |||
11 Nov | 299.75 | 14.2 | 1.70 | 30.08 | 805 | -37 | 1,242 | |||
8 Nov | 297.75 | 12.5 | -2.45 | 27.20 | 931 | -44 | 1,278 | |||
7 Nov | 300.35 | 14.95 | -2.20 | 27.75 | 1,026 | -146 | 1,320 | |||
6 Nov | 301.85 | 17.15 | 9.20 | 30.96 | 7,260 | -1,261 | 1,471 | |||
5 Nov | 286.35 | 7.95 | -0.40 | 31.88 | 4,946 | 85 | 2,735 | |||
4 Nov | 284.15 | 8.35 | -1.45 | 35.03 | 4,353 | 429 | 2,659 | |||
1 Nov | 288.65 | 9.8 | -0.10 | 30.25 | 972 | 166 | 2,236 | |||
31 Oct | 284.90 | 9.9 | -1.35 | - | 2,949 | 607 | 2,078 | |||
30 Oct | 288.55 | 11.25 | 2.50 | - | 5,198 | 572 | 1,451 | |||
29 Oct | 283.65 | 8.75 | 2.90 | - | 2,264 | -91 | 879 | |||
28 Oct | 270.05 | 5.85 | -2.55 | - | 1,420 | 418 | 971 | |||
25 Oct | 272.35 | 8.4 | 2.05 | - | 929 | 153 | 553 | |||
24 Oct | 271.35 | 6.35 | 0.35 | - | 148 | 9 | 399 | |||
23 Oct | 268.65 | 6 | -0.50 | - | 321 | 49 | 390 | |||
22 Oct | 271.65 | 6.5 | -3.70 | - | 215 | 44 | 341 | |||
21 Oct | 282.30 | 10.2 | -2.50 | - | 127 | 42 | 297 | |||
18 Oct | 287.15 | 12.7 | 1.80 | - | 96 | 6 | 252 | |||
17 Oct | 284.55 | 10.9 | -0.90 | - | 83 | 13 | 244 | |||
16 Oct | 285.70 | 11.8 | -0.90 | - | 121 | 24 | 231 | |||
15 Oct | 288.85 | 12.7 | 1.20 | - | 124 | 5 | 207 | |||
14 Oct | 285.70 | 11.5 | -0.25 | - | 64 | 3 | 201 | |||
11 Oct | 285.90 | 11.75 | -1.05 | - | 89 | 35 | 198 | |||
10 Oct | 286.90 | 12.8 | 1.85 | - | 82 | 32 | 164 | |||
9 Oct | 282.40 | 10.95 | 0.30 | - | 83 | -8 | 132 | |||
8 Oct | 280.25 | 10.65 | 3.65 | - | 67 | 7 | 141 | |||
7 Oct | 267.35 | 7 | -3.60 | - | 118 | 60 | 133 | |||
4 Oct | 277.20 | 10.6 | -1.90 | - | 42 | 12 | 70 | |||
3 Oct | 278.70 | 12.5 | -2.55 | - | 49 | -2 | 61 | |||
1 Oct | 283.95 | 15.05 | -0.70 | - | 13 | 5 | 62 | |||
30 Sept | 285.10 | 15.75 | -3.25 | - | 77 | 29 | 57 | |||
27 Sept | 293.45 | 19 | 1.00 | - | 38 | 18 | 27 | |||
26 Sept | 290.50 | 18 | -0.10 | - | 1 | 0 | 10 | |||
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25 Sept | 289.85 | 18.1 | 2.10 | - | 13 | 7 | 9 | |||
24 Sept | 291.80 | 16 | -16.85 | - | 2 | 1 | 1 | |||
23 Sept | 286.30 | 32.85 | 0.00 | - | 0 | 0 | 0 | |||
20 Sept | 277.35 | 32.85 | 0.00 | - | 0 | 0 | 0 | |||
19 Sept | 272.70 | 32.85 | 0.00 | - | 0 | 0 | 0 | |||
4 Sept | 298.95 | 32.85 | 0.00 | - | 0 | 0 | 0 | |||
3 Sept | 297.15 | 32.85 | 0.00 | - | 0 | 0 | 0 | |||
2 Sept | 296.90 | 32.85 | - | 0 | 0 | 0 |
For Bharat Electronics Ltd - strike price 290 expiring on 28NOV2024
Delta for 290 CE is 0.33
Historical price for 290 CE is as follows
On 14 Nov BEL was trading at 280.95. The strike last trading price was 3.35, which was -1.00 lower than the previous day. The implied volatity was 29.03, the open interest changed by 130 which increased total open position to 2031
On 13 Nov BEL was trading at 281.55. The strike last trading price was 4.35, which was -2.95 lower than the previous day. The implied volatity was 31.43, the open interest changed by 517 which increased total open position to 1914
On 12 Nov BEL was trading at 290.15. The strike last trading price was 7.3, which was -6.90 lower than the previous day. The implied volatity was 29.05, the open interest changed by 174 which increased total open position to 1415
On 11 Nov BEL was trading at 299.75. The strike last trading price was 14.2, which was 1.70 higher than the previous day. The implied volatity was 30.08, the open interest changed by -37 which decreased total open position to 1242
On 8 Nov BEL was trading at 297.75. The strike last trading price was 12.5, which was -2.45 lower than the previous day. The implied volatity was 27.20, the open interest changed by -44 which decreased total open position to 1278
On 7 Nov BEL was trading at 300.35. The strike last trading price was 14.95, which was -2.20 lower than the previous day. The implied volatity was 27.75, the open interest changed by -146 which decreased total open position to 1320
On 6 Nov BEL was trading at 301.85. The strike last trading price was 17.15, which was 9.20 higher than the previous day. The implied volatity was 30.96, the open interest changed by -1261 which decreased total open position to 1471
On 5 Nov BEL was trading at 286.35. The strike last trading price was 7.95, which was -0.40 lower than the previous day. The implied volatity was 31.88, the open interest changed by 85 which increased total open position to 2735
On 4 Nov BEL was trading at 284.15. The strike last trading price was 8.35, which was -1.45 lower than the previous day. The implied volatity was 35.03, the open interest changed by 429 which increased total open position to 2659
On 1 Nov BEL was trading at 288.65. The strike last trading price was 9.8, which was -0.10 lower than the previous day. The implied volatity was 30.25, the open interest changed by 166 which increased total open position to 2236
On 31 Oct BEL was trading at 284.90. The strike last trading price was 9.9, which was -1.35 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 30 Oct BEL was trading at 288.55. The strike last trading price was 11.25, which was 2.50 higher than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 29 Oct BEL was trading at 283.65. The strike last trading price was 8.75, which was 2.90 higher than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 28 Oct BEL was trading at 270.05. The strike last trading price was 5.85, which was -2.55 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 25 Oct BEL was trading at 272.35. The strike last trading price was 8.4, which was 2.05 higher than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 24 Oct BEL was trading at 271.35. The strike last trading price was 6.35, which was 0.35 higher than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 23 Oct BEL was trading at 268.65. The strike last trading price was 6, which was -0.50 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 22 Oct BEL was trading at 271.65. The strike last trading price was 6.5, which was -3.70 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 21 Oct BEL was trading at 282.30. The strike last trading price was 10.2, which was -2.50 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 18 Oct BEL was trading at 287.15. The strike last trading price was 12.7, which was 1.80 higher than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 17 Oct BEL was trading at 284.55. The strike last trading price was 10.9, which was -0.90 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 16 Oct BEL was trading at 285.70. The strike last trading price was 11.8, which was -0.90 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 15 Oct BEL was trading at 288.85. The strike last trading price was 12.7, which was 1.20 higher than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 14 Oct BEL was trading at 285.70. The strike last trading price was 11.5, which was -0.25 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 11 Oct BEL was trading at 285.90. The strike last trading price was 11.75, which was -1.05 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 10 Oct BEL was trading at 286.90. The strike last trading price was 12.8, which was 1.85 higher than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 9 Oct BEL was trading at 282.40. The strike last trading price was 10.95, which was 0.30 higher than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 8 Oct BEL was trading at 280.25. The strike last trading price was 10.65, which was 3.65 higher than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 7 Oct BEL was trading at 267.35. The strike last trading price was 7, which was -3.60 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 4 Oct BEL was trading at 277.20. The strike last trading price was 10.6, which was -1.90 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 3 Oct BEL was trading at 278.70. The strike last trading price was 12.5, which was -2.55 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 1 Oct BEL was trading at 283.95. The strike last trading price was 15.05, which was -0.70 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 30 Sept BEL was trading at 285.10. The strike last trading price was 15.75, which was -3.25 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 27 Sept BEL was trading at 293.45. The strike last trading price was 19, which was 1.00 higher than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 26 Sept BEL was trading at 290.50. The strike last trading price was 18, which was -0.10 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 25 Sept BEL was trading at 289.85. The strike last trading price was 18.1, which was 2.10 higher than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 24 Sept BEL was trading at 291.80. The strike last trading price was 16, which was -16.85 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 23 Sept BEL was trading at 286.30. The strike last trading price was 32.85, which was 0.00 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 20 Sept BEL was trading at 277.35. The strike last trading price was 32.85, which was 0.00 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 19 Sept BEL was trading at 272.70. The strike last trading price was 32.85, which was 0.00 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 4 Sept BEL was trading at 298.95. The strike last trading price was 32.85, which was 0.00 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 3 Sept BEL was trading at 297.15. The strike last trading price was 32.85, which was 0.00 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 2 Sept BEL was trading at 296.90. The strike last trading price was 32.85, which was lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
BEL 28NOV2024 290 PE | |||||||
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Delta: -0.65
Vega: 0.20
Theta: -0.19
Gamma: 0.02
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Date | Close | Ltp | Change | IV | Volume | Change OI | OI |
14 Nov | 280.95 | 11.8 | 0.70 | 33.04 | 850 | -39 | 1,183 |
13 Nov | 281.55 | 11.1 | 3.70 | 31.15 | 2,069 | -141 | 1,223 |
12 Nov | 290.15 | 7.4 | 3.75 | 31.82 | 3,324 | 36 | 1,418 |
11 Nov | 299.75 | 3.65 | -1.10 | 31.23 | 1,886 | 91 | 1,394 |
8 Nov | 297.75 | 4.75 | 0.65 | 30.56 | 2,846 | -66 | 1,307 |
7 Nov | 300.35 | 4.1 | 0.45 | 30.93 | 2,194 | -98 | 1,381 |
6 Nov | 301.85 | 3.65 | -7.70 | 30.31 | 5,062 | 462 | 1,489 |
5 Nov | 286.35 | 11.35 | -2.00 | 34.94 | 674 | 20 | 1,027 |
4 Nov | 284.15 | 13.35 | 1.75 | 38.32 | 691 | 4 | 1,006 |
1 Nov | 288.65 | 11.6 | -0.65 | 38.36 | 260 | 53 | 1,003 |
31 Oct | 284.90 | 12.25 | 0.90 | - | 879 | 237 | 951 |
30 Oct | 288.55 | 11.35 | -1.80 | - | 1,852 | 387 | 715 |
29 Oct | 283.65 | 13.15 | -10.35 | - | 239 | 54 | 328 |
28 Oct | 270.05 | 23.5 | 1.45 | - | 132 | 62 | 274 |
25 Oct | 272.35 | 22.05 | -0.30 | - | 51 | 1 | 212 |
24 Oct | 271.35 | 22.35 | -2.05 | - | 94 | 70 | 212 |
23 Oct | 268.65 | 24.4 | 1.40 | - | 33 | 6 | 142 |
22 Oct | 271.65 | 23 | 7.25 | - | 47 | 10 | 136 |
21 Oct | 282.30 | 15.75 | 4.10 | - | 37 | 15 | 126 |
18 Oct | 287.15 | 11.65 | -2.20 | - | 29 | 8 | 109 |
17 Oct | 284.55 | 13.85 | 1.35 | - | 18 | 2 | 100 |
16 Oct | 285.70 | 12.5 | 1.40 | - | 12 | 3 | 97 |
15 Oct | 288.85 | 11.1 | -1.20 | - | 28 | 13 | 95 |
14 Oct | 285.70 | 12.3 | -0.60 | - | 19 | 2 | 81 |
11 Oct | 285.90 | 12.9 | 0.90 | - | 11 | -2 | 79 |
10 Oct | 286.90 | 12 | -3.25 | - | 31 | 10 | 81 |
9 Oct | 282.40 | 15.25 | -0.95 | - | 42 | -4 | 73 |
8 Oct | 280.25 | 16.2 | -6.80 | - | 18 | -1 | 78 |
7 Oct | 267.35 | 23 | 3.95 | - | 25 | 14 | 76 |
4 Oct | 277.20 | 19.05 | 0.20 | - | 9 | 4 | 62 |
3 Oct | 278.70 | 18.85 | 2.75 | - | 6 | -1 | 57 |
1 Oct | 283.95 | 16.1 | -0.85 | - | 5 | 2 | 56 |
30 Sept | 285.10 | 16.95 | 4.85 | - | 43 | 13 | 48 |
27 Sept | 293.45 | 12.1 | -0.75 | - | 42 | 21 | 34 |
26 Sept | 290.50 | 12.85 | -1.05 | - | 6 | 1 | 12 |
25 Sept | 289.85 | 13.9 | 0.40 | - | 11 | 10 | 12 |
24 Sept | 291.80 | 13.5 | -7.95 | - | 2 | 1 | 1 |
23 Sept | 286.30 | 21.45 | 0.00 | - | 0 | 0 | 0 |
20 Sept | 277.35 | 21.45 | 0.00 | - | 0 | 0 | 0 |
19 Sept | 272.70 | 21.45 | 0.00 | - | 0 | 0 | 0 |
4 Sept | 298.95 | 21.45 | 0.00 | - | 0 | 0 | 0 |
3 Sept | 297.15 | 21.45 | 0.00 | - | 0 | 0 | 0 |
2 Sept | 296.90 | 21.45 | - | 0 | 0 | 0 |
For Bharat Electronics Ltd - strike price 290 expiring on 28NOV2024
Delta for 290 PE is -0.65
Historical price for 290 PE is as follows
On 14 Nov BEL was trading at 280.95. The strike last trading price was 11.8, which was 0.70 higher than the previous day. The implied volatity was 33.04, the open interest changed by -39 which decreased total open position to 1183
On 13 Nov BEL was trading at 281.55. The strike last trading price was 11.1, which was 3.70 higher than the previous day. The implied volatity was 31.15, the open interest changed by -141 which decreased total open position to 1223
On 12 Nov BEL was trading at 290.15. The strike last trading price was 7.4, which was 3.75 higher than the previous day. The implied volatity was 31.82, the open interest changed by 36 which increased total open position to 1418
On 11 Nov BEL was trading at 299.75. The strike last trading price was 3.65, which was -1.10 lower than the previous day. The implied volatity was 31.23, the open interest changed by 91 which increased total open position to 1394
On 8 Nov BEL was trading at 297.75. The strike last trading price was 4.75, which was 0.65 higher than the previous day. The implied volatity was 30.56, the open interest changed by -66 which decreased total open position to 1307
On 7 Nov BEL was trading at 300.35. The strike last trading price was 4.1, which was 0.45 higher than the previous day. The implied volatity was 30.93, the open interest changed by -98 which decreased total open position to 1381
On 6 Nov BEL was trading at 301.85. The strike last trading price was 3.65, which was -7.70 lower than the previous day. The implied volatity was 30.31, the open interest changed by 462 which increased total open position to 1489
On 5 Nov BEL was trading at 286.35. The strike last trading price was 11.35, which was -2.00 lower than the previous day. The implied volatity was 34.94, the open interest changed by 20 which increased total open position to 1027
On 4 Nov BEL was trading at 284.15. The strike last trading price was 13.35, which was 1.75 higher than the previous day. The implied volatity was 38.32, the open interest changed by 4 which increased total open position to 1006
On 1 Nov BEL was trading at 288.65. The strike last trading price was 11.6, which was -0.65 lower than the previous day. The implied volatity was 38.36, the open interest changed by 53 which increased total open position to 1003
On 31 Oct BEL was trading at 284.90. The strike last trading price was 12.25, which was 0.90 higher than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 30 Oct BEL was trading at 288.55. The strike last trading price was 11.35, which was -1.80 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 29 Oct BEL was trading at 283.65. The strike last trading price was 13.15, which was -10.35 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 28 Oct BEL was trading at 270.05. The strike last trading price was 23.5, which was 1.45 higher than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 25 Oct BEL was trading at 272.35. The strike last trading price was 22.05, which was -0.30 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 24 Oct BEL was trading at 271.35. The strike last trading price was 22.35, which was -2.05 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 23 Oct BEL was trading at 268.65. The strike last trading price was 24.4, which was 1.40 higher than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 22 Oct BEL was trading at 271.65. The strike last trading price was 23, which was 7.25 higher than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 21 Oct BEL was trading at 282.30. The strike last trading price was 15.75, which was 4.10 higher than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 18 Oct BEL was trading at 287.15. The strike last trading price was 11.65, which was -2.20 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 17 Oct BEL was trading at 284.55. The strike last trading price was 13.85, which was 1.35 higher than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 16 Oct BEL was trading at 285.70. The strike last trading price was 12.5, which was 1.40 higher than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 15 Oct BEL was trading at 288.85. The strike last trading price was 11.1, which was -1.20 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 14 Oct BEL was trading at 285.70. The strike last trading price was 12.3, which was -0.60 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 11 Oct BEL was trading at 285.90. The strike last trading price was 12.9, which was 0.90 higher than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 10 Oct BEL was trading at 286.90. The strike last trading price was 12, which was -3.25 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 9 Oct BEL was trading at 282.40. The strike last trading price was 15.25, which was -0.95 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 8 Oct BEL was trading at 280.25. The strike last trading price was 16.2, which was -6.80 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 7 Oct BEL was trading at 267.35. The strike last trading price was 23, which was 3.95 higher than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 4 Oct BEL was trading at 277.20. The strike last trading price was 19.05, which was 0.20 higher than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 3 Oct BEL was trading at 278.70. The strike last trading price was 18.85, which was 2.75 higher than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 1 Oct BEL was trading at 283.95. The strike last trading price was 16.1, which was -0.85 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 30 Sept BEL was trading at 285.10. The strike last trading price was 16.95, which was 4.85 higher than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 27 Sept BEL was trading at 293.45. The strike last trading price was 12.1, which was -0.75 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 26 Sept BEL was trading at 290.50. The strike last trading price was 12.85, which was -1.05 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 25 Sept BEL was trading at 289.85. The strike last trading price was 13.9, which was 0.40 higher than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 24 Sept BEL was trading at 291.80. The strike last trading price was 13.5, which was -7.95 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 23 Sept BEL was trading at 286.30. The strike last trading price was 21.45, which was 0.00 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 20 Sept BEL was trading at 277.35. The strike last trading price was 21.45, which was 0.00 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 19 Sept BEL was trading at 272.70. The strike last trading price was 21.45, which was 0.00 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 4 Sept BEL was trading at 298.95. The strike last trading price was 21.45, which was 0.00 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 3 Sept BEL was trading at 297.15. The strike last trading price was 21.45, which was 0.00 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to
On 2 Sept BEL was trading at 296.90. The strike last trading price was 21.45, which was lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to