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[--[65.84.65.76]--]
BEL
Bharat Electronics Ltd

280.95 -0.60 (-0.21%)

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Historical option data for BEL

14 Nov 2024 04:12 PM IST
BEL 28NOV2024 330 CE
Delta: 0.03
Vega: 0.04
Theta: -0.06
Gamma: 0.00
Date Close Ltp Change IV Volume Change OI OI
14 Nov 280.95 0.3 -0.10 42.53 426 68 1,304
13 Nov 281.55 0.4 -0.05 42.57 800 -43 1,229
12 Nov 290.15 0.45 -0.45 36.21 1,375 2 1,276
11 Nov 299.75 0.9 -0.05 31.94 933 98 1,274
8 Nov 297.75 0.95 -0.35 31.66 1,203 -3 1,177
7 Nov 300.35 1.3 -0.30 31.07 1,033 145 1,180
6 Nov 301.85 1.6 0.80 30.81 2,215 421 1,036
5 Nov 286.35 0.8 -0.10 36.41 638 55 615
4 Nov 284.15 0.9 -0.30 37.72 417 14 561
1 Nov 288.65 1.2 -0.15 34.75 198 48 547
31 Oct 284.90 1.35 -0.10 - 464 58 503
30 Oct 288.55 1.45 0.40 - 731 184 445
29 Oct 283.65 1.05 -0.05 - 112 22 260
28 Oct 270.05 1.1 -0.55 - 95 18 237
25 Oct 272.35 1.65 0.65 - 197 66 219
24 Oct 271.35 1 -0.05 - 28 9 154
23 Oct 268.65 1.05 -0.15 - 12 2 146
22 Oct 271.65 1.2 -0.60 - 47 9 143
21 Oct 282.30 1.8 -0.25 - 14 5 135
18 Oct 287.15 2.05 0.05 - 19 6 127
17 Oct 284.55 2 -0.10 - 40 -9 121
16 Oct 285.70 2.1 -0.25 - 9 1 129
15 Oct 288.85 2.35 0.30 - 23 8 127
14 Oct 285.70 2.05 -0.25 - 18 4 119
11 Oct 285.90 2.3 -0.40 - 29 2 114
10 Oct 286.90 2.7 0.45 - 35 5 113
9 Oct 282.40 2.25 -0.20 - 29 6 108
8 Oct 280.25 2.45 0.60 - 50 18 102
7 Oct 267.35 1.85 -0.70 - 98 9 83
4 Oct 277.20 2.55 -0.55 - 37 5 75
3 Oct 278.70 3.1 -0.95 - 86 1 70
1 Oct 283.95 4.05 -0.75 - 24 8 69
30 Sept 285.10 4.8 -1.00 - 78 18 61
27 Sept 293.45 5.8 1.10 - 35 19 43
26 Sept 290.50 4.7 -0.25 - 2 0 23
25 Sept 289.85 4.95 -0.25 - 11 5 22
24 Sept 291.80 5.2 1.60 - 18 5 16
23 Sept 286.30 3.6 0.65 - 5 2 11
20 Sept 277.35 2.95 -0.05 - 4 1 10
19 Sept 272.70 3 -1.10 - 6 2 8
18 Sept 282.85 4.1 -0.30 - 4 1 7
17 Sept 284.30 4.4 0.00 - 0 0 0
13 Sept 289.95 4.4 -0.25 - 2 1 5
12 Sept 291.70 4.65 0.50 - 2 0 3
11 Sept 288.05 4.15 0.00 - 0 3 0
10 Sept 285.75 4.15 -12.60 - 3 2 2
5 Sept 290.60 16.75 0.00 - 0 0 0
4 Sept 298.95 16.75 0.00 - 0 0 0
3 Sept 297.15 16.75 0.00 - 0 0 0
2 Sept 296.90 16.75 - 0 0 0


For Bharat Electronics Ltd - strike price 330 expiring on 28NOV2024

Delta for 330 CE is 0.03

Historical price for 330 CE is as follows

On 14 Nov BEL was trading at 280.95. The strike last trading price was 0.3, which was -0.10 lower than the previous day. The implied volatity was 42.53, the open interest changed by 68 which increased total open position to 1304


On 13 Nov BEL was trading at 281.55. The strike last trading price was 0.4, which was -0.05 lower than the previous day. The implied volatity was 42.57, the open interest changed by -43 which decreased total open position to 1229


On 12 Nov BEL was trading at 290.15. The strike last trading price was 0.45, which was -0.45 lower than the previous day. The implied volatity was 36.21, the open interest changed by 2 which increased total open position to 1276


On 11 Nov BEL was trading at 299.75. The strike last trading price was 0.9, which was -0.05 lower than the previous day. The implied volatity was 31.94, the open interest changed by 98 which increased total open position to 1274


On 8 Nov BEL was trading at 297.75. The strike last trading price was 0.95, which was -0.35 lower than the previous day. The implied volatity was 31.66, the open interest changed by -3 which decreased total open position to 1177


On 7 Nov BEL was trading at 300.35. The strike last trading price was 1.3, which was -0.30 lower than the previous day. The implied volatity was 31.07, the open interest changed by 145 which increased total open position to 1180


On 6 Nov BEL was trading at 301.85. The strike last trading price was 1.6, which was 0.80 higher than the previous day. The implied volatity was 30.81, the open interest changed by 421 which increased total open position to 1036


On 5 Nov BEL was trading at 286.35. The strike last trading price was 0.8, which was -0.10 lower than the previous day. The implied volatity was 36.41, the open interest changed by 55 which increased total open position to 615


On 4 Nov BEL was trading at 284.15. The strike last trading price was 0.9, which was -0.30 lower than the previous day. The implied volatity was 37.72, the open interest changed by 14 which increased total open position to 561


On 1 Nov BEL was trading at 288.65. The strike last trading price was 1.2, which was -0.15 lower than the previous day. The implied volatity was 34.75, the open interest changed by 48 which increased total open position to 547


On 31 Oct BEL was trading at 284.90. The strike last trading price was 1.35, 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 30 Oct BEL was trading at 288.55. The strike last trading price was 1.45, 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 29 Oct BEL was trading at 283.65. The strike last trading price was 1.05, which was -0.05 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 1.1, which was -0.55 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 1.65, which was 0.65 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 1, which was -0.05 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 1.05, which was -0.15 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 1.2, 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 21 Oct BEL was trading at 282.30. The strike last trading price was 1.8, 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 18 Oct BEL was trading at 287.15. The strike last trading price was 2.05, which was 0.05 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 2, 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 16 Oct BEL was trading at 285.70. The strike last trading price was 2.1, 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 15 Oct BEL was trading at 288.85. The strike last trading price was 2.35, 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 14 Oct BEL was trading at 285.70. The strike last trading price was 2.05, 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 2.3, which was -0.40 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 2.7, which was 0.45 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 2.25, which was -0.20 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 2.45, which was 0.60 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 1.85, 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 4 Oct BEL was trading at 277.20. The strike last trading price was 2.55, which was -0.55 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 3.1, 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 1 Oct BEL was trading at 283.95. The strike last trading price was 4.05, 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 30 Sept BEL was trading at 285.10. The strike last trading price was 4.8, which was -1.00 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 5.8, which was 1.10 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 4.7, 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 25 Sept BEL was trading at 289.85. The strike last trading price was 4.95, 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 24 Sept BEL was trading at 291.80. The strike last trading price was 5.2, which was 1.60 higher 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 3.6, which was 0.65 higher 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 2.95, which was -0.05 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 3, which was -1.10 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to


On 18 Sept BEL was trading at 282.85. The strike last trading price was 4.1, 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 17 Sept BEL was trading at 284.30. The strike last trading price was 4.4, 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 13 Sept BEL was trading at 289.95. The strike last trading price was 4.4, 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 12 Sept BEL was trading at 291.70. The strike last trading price was 4.65, which was 0.50 higher than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to


On 11 Sept BEL was trading at 288.05. The strike last trading price was 4.15, 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 10 Sept BEL was trading at 285.75. The strike last trading price was 4.15, which was -12.60 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to


On 5 Sept BEL was trading at 290.60. The strike last trading price was 16.75, 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 16.75, 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 16.75, 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 16.75, which was lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to


BEL 28NOV2024 330 PE
Delta: -
Vega: -
Theta: -
Gamma: -
Date Close Ltp Change IV Volume Change OI OI
14 Nov 280.95 47.45 -0.55 - 9 -5 239
13 Nov 281.55 48 8.75 55.35 7 -1 245
12 Nov 290.15 39.25 9.55 - 11 -2 252
11 Nov 299.75 29.7 -3.35 29.84 56 -9 253
8 Nov 297.75 33.05 3.30 38.21 35 10 263
7 Nov 300.35 29.75 1.85 33.00 53 31 252
6 Nov 301.85 27.9 -15.85 30.10 102 13 220
5 Nov 286.35 43.75 -2.25 42.26 17 -2 207
4 Nov 284.15 46 3.05 47.69 9 0 211
1 Nov 288.65 42.95 -0.35 50.20 21 16 214
31 Oct 284.90 43.3 2.50 - 105 49 196
30 Oct 288.55 40.8 -4.45 - 104 71 146
29 Oct 283.65 45.25 -14.00 - 26 19 73
28 Oct 270.05 59.25 0.75 - 9 10 53
25 Oct 272.35 58.5 0.50 - 28 18 43
24 Oct 271.35 58 -0.80 - 3 2 24
23 Oct 268.65 58.8 6.80 - 2 1 21
22 Oct 271.65 52 7.20 - 2 1 19
21 Oct 282.30 44.8 4.80 - 9 8 17
18 Oct 287.15 40 1.00 - 1 0 8
17 Oct 284.55 39 0.00 - 0 1 0
16 Oct 285.70 39 -1.00 - 1 0 7
15 Oct 288.85 40 0.00 - 1 0 6
14 Oct 285.70 40 0.00 - 0 2 0
11 Oct 285.90 40 -1.50 - 2 1 5
10 Oct 286.90 41.5 -0.60 - 4 1 3
9 Oct 282.40 42.1 -2.40 - 1 0 1
8 Oct 280.25 44.5 0.00 - 0 1 0
7 Oct 267.35 44.5 -0.10 - 1 0 0
4 Oct 277.20 44.6 0.00 - 0 0 0
3 Oct 278.70 44.6 0.00 - 0 0 0
1 Oct 283.95 44.6 0.00 - 0 0 0
30 Sept 285.10 44.6 0.00 - 0 0 0
27 Sept 293.45 44.6 44.60 - 0 0 0
26 Sept 290.50 0 0.00 - 0 0 0
25 Sept 289.85 0 0.00 - 0 0 0
24 Sept 291.80 0 0.00 - 0 0 0
23 Sept 286.30 0 0.00 - 0 0 0
20 Sept 277.35 0 0.00 - 0 0 0
19 Sept 272.70 0 0.00 - 0 0 0
18 Sept 282.85 0 0.00 - 0 0 0
17 Sept 284.30 0 0.00 - 0 0 0
13 Sept 289.95 0 0.00 - 0 0 0
12 Sept 291.70 0 0.00 - 0 0 0
11 Sept 288.05 0 0.00 - 0 0 0
10 Sept 285.75 0 0.00 - 0 0 0
5 Sept 290.60 0 0.00 - 0 0 0
4 Sept 298.95 0 0.00 - 0 0 0
3 Sept 297.15 0 0.00 - 0 0 0
2 Sept 296.90 0 - 0 0 0


For Bharat Electronics Ltd - strike price 330 expiring on 28NOV2024

Delta for 330 PE is -

Historical price for 330 PE is as follows

On 14 Nov BEL was trading at 280.95. The strike last trading price was 47.45, which was -0.55 lower than the previous day. The implied volatity was -, the open interest changed by -5 which decreased total open position to 239


On 13 Nov BEL was trading at 281.55. The strike last trading price was 48, which was 8.75 higher than the previous day. The implied volatity was 55.35, the open interest changed by -1 which decreased total open position to 245


On 12 Nov BEL was trading at 290.15. The strike last trading price was 39.25, which was 9.55 higher than the previous day. The implied volatity was -, the open interest changed by -2 which decreased total open position to 252


On 11 Nov BEL was trading at 299.75. The strike last trading price was 29.7, which was -3.35 lower than the previous day. The implied volatity was 29.84, the open interest changed by -9 which decreased total open position to 253


On 8 Nov BEL was trading at 297.75. The strike last trading price was 33.05, which was 3.30 higher than the previous day. The implied volatity was 38.21, the open interest changed by 10 which increased total open position to 263


On 7 Nov BEL was trading at 300.35. The strike last trading price was 29.75, which was 1.85 higher than the previous day. The implied volatity was 33.00, the open interest changed by 31 which increased total open position to 252


On 6 Nov BEL was trading at 301.85. The strike last trading price was 27.9, which was -15.85 lower than the previous day. The implied volatity was 30.10, the open interest changed by 13 which increased total open position to 220


On 5 Nov BEL was trading at 286.35. The strike last trading price was 43.75, which was -2.25 lower than the previous day. The implied volatity was 42.26, the open interest changed by -2 which decreased total open position to 207


On 4 Nov BEL was trading at 284.15. The strike last trading price was 46, which was 3.05 higher than the previous day. The implied volatity was 47.69, the open interest changed by 0 which decreased total open position to 211


On 1 Nov BEL was trading at 288.65. The strike last trading price was 42.95, which was -0.35 lower than the previous day. The implied volatity was 50.20, the open interest changed by 16 which increased total open position to 214


On 31 Oct BEL was trading at 284.90. The strike last trading price was 43.3, 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 30 Oct BEL was trading at 288.55. The strike last trading price was 40.8, which was -4.45 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 45.25, which was -14.00 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 59.25, which was 0.75 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 58.5, which was 0.50 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 58, which was -0.80 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 58.8, which was 6.80 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 52, which was 7.20 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 44.8, which was 4.80 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 40, 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 17 Oct BEL was trading at 284.55. The strike last trading price was 39, 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 16 Oct BEL was trading at 285.70. The strike last trading price was 39, which was -1.00 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 40, 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 14 Oct BEL was trading at 285.70. The strike last trading price was 40, 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 11 Oct BEL was trading at 285.90. The strike last trading price was 40, which was -1.50 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 41.5, 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 9 Oct BEL was trading at 282.40. The strike last trading price was 42.1, which was -2.40 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 44.5, 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 7 Oct BEL was trading at 267.35. The strike last trading price was 44.5, 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 4 Oct BEL was trading at 277.20. The strike last trading price was 44.6, 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 Oct BEL was trading at 278.70. The strike last trading price was 44.6, 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 1 Oct BEL was trading at 283.95. The strike last trading price was 44.6, 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 30 Sept BEL was trading at 285.10. The strike last trading price was 44.6, 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 27 Sept BEL was trading at 293.45. The strike last trading price was 44.6, which was 44.60 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 0, 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 25 Sept BEL was trading at 289.85. The strike last trading price was 0, 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 24 Sept BEL was trading at 291.80. The strike last trading price was 0, 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 23 Sept BEL was trading at 286.30. The strike last trading price was 0, 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 0, 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 0, 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 18 Sept BEL was trading at 282.85. The strike last trading price was 0, 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 17 Sept BEL was trading at 284.30. The strike last trading price was 0, 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 13 Sept BEL was trading at 289.95. The strike last trading price was 0, 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 12 Sept BEL was trading at 291.70. The strike last trading price was 0, 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 11 Sept BEL was trading at 288.05. The strike last trading price was 0, 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 10 Sept BEL was trading at 285.75. The strike last trading price was 0, 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 5 Sept BEL was trading at 290.60. The strike last trading price was 0, 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 0, 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 0, 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 0, which was lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to