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[--[65.84.65.76]--]
NMDC
Nmdc Ltd.

217.63 -3.59 (-1.62%)

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Historical option data for NMDC

21 Nov 2024 04:01 PM IST
NMDC 28NOV2024 200 CE
Delta: -
Vega: -
Theta: -
Gamma: -
Date Close Ltp Change IV Volume Change OI OI
21 Nov 217.63 18.7 -3.45 - 4 1 13
20 Nov 221.22 22.15 0.00 59.08 2 0 11
19 Nov 221.22 22.15 -1.60 59.08 2 -1 11
18 Nov 222.71 23.75 3.55 52.66 12 2 12
14 Nov 218.80 20.2 -3.80 38.10 5 1 9
13 Nov 223.21 24 -5.60 - 1 0 9
12 Nov 224.76 29.6 -1.90 77.83 9 1 9
11 Nov 232.93 31.5 -6.90 - 1 0 8
8 Nov 235.97 38.4 -1.60 70.45 10 3 7
7 Nov 238.91 40 2.20 - 2 0 4
6 Nov 241.06 37.8 0.15 - 4 0 4
5 Nov 234.73 37.65 11.60 52.89 2 0 4
4 Nov 226.50 26.05 0.00 0.00 0 0 0
1 Nov 222.84 26.05 -2.45 43.27 2 0 4
31 Oct 221.87 28.5 0.00 - 0 0 0
30 Oct 224.26 28.5 0.00 - 0 2 0
29 Oct 226.14 28.5 -1.00 - 6 2 4
28 Oct 227.96 29.5 0.00 - 0 0 2
25 Oct 217.83 29.5 0.00 - 0 0 2
24 Oct 215.85 29.5 0.00 - 0 0 2
23 Oct 218.28 29.5 0.00 - 0 0 0
22 Oct 215.41 29.5 0.00 - 0 1 0
21 Oct 225.59 29.5 -6.05 - 1 0 1
18 Oct 231.44 35.55 0.00 - 0 0 0
17 Oct 224.02 35.55 0.00 - 0 1 0
16 Oct 231.40 35.55 -1.45 - 2 1 1
15 Oct 232.08 37 0.00 - 0 0 0
14 Oct 237.05 37 0.00 - 0 -1 0
11 Oct 233.68 37 6.00 - 1 0 1
10 Oct 226.36 31 -5.15 - 1 0 0
9 Oct 224.18 36.15 0.00 - 0 0 0
8 Oct 218.99 36.15 0.00 - 0 0 0
7 Oct 228.74 36.15 0.00 - 0 0 0
4 Oct 236.56 36.15 0.00 - 0 0 0
3 Oct 239.40 36.15 0.00 - 0 0 0
1 Oct 244.53 36.15 0.00 - 0 0 0
30 Sept 244.91 36.15 0.00 - 0 0 0
27 Sept 235.18 36.15 0.00 - 0 0 0
26 Sept 234.29 36.15 0.00 - 0 0 0
25 Sept 225.80 36.15 0.00 - 0 0 0
24 Sept 223.93 36.15 0.00 - 0 0 0
23 Sept 215.39 36.15 0.00 - 0 0 0
20 Sept 212.54 36.15 0.00 - 0 0 0
19 Sept 212.38 36.15 0.00 - 0 0 0
18 Sept 212.12 36.15 0.00 - 0 0 0
11 Sept 206.79 36.15 36.15 - 0 0 0
5 Sept 212.70 0 0.00 - 0 0 0
4 Sept 211.09 0 0.00 - 0 0 0
2 Sept 216.41 0 - 0 0 0


For Nmdc Ltd. - strike price 200 expiring on 28NOV2024

Delta for 200 CE is -

Historical price for 200 CE is as follows

On 21 Nov NMDC was trading at 217.63. The strike last trading price was 18.7, which was -3.45 lower than the previous day. The implied volatity was -, the open interest changed by 1 which increased total open position to 13


On 20 Nov NMDC was trading at 221.22. The strike last trading price was 22.15, which was 0.00 lower than the previous day. The implied volatity was 59.08, the open interest changed by 0 which decreased total open position to 11


On 19 Nov NMDC was trading at 221.22. The strike last trading price was 22.15, which was -1.60 lower than the previous day. The implied volatity was 59.08, the open interest changed by -1 which decreased total open position to 11


On 18 Nov NMDC was trading at 222.71. The strike last trading price was 23.75, which was 3.55 higher than the previous day. The implied volatity was 52.66, the open interest changed by 2 which increased total open position to 12


On 14 Nov NMDC was trading at 218.80. The strike last trading price was 20.2, which was -3.80 lower than the previous day. The implied volatity was 38.10, the open interest changed by 1 which increased total open position to 9


On 13 Nov NMDC was trading at 223.21. The strike last trading price was 24, which was -5.60 lower than the previous day. The implied volatity was -, the open interest changed by 0 which decreased total open position to 9


On 12 Nov NMDC was trading at 224.76. The strike last trading price was 29.6, which was -1.90 lower than the previous day. The implied volatity was 77.83, the open interest changed by 1 which increased total open position to 9


On 11 Nov NMDC was trading at 232.93. The strike last trading price was 31.5, which was -6.90 lower than the previous day. The implied volatity was -, the open interest changed by 0 which decreased total open position to 8


On 8 Nov NMDC was trading at 235.97. The strike last trading price was 38.4, which was -1.60 lower than the previous day. The implied volatity was 70.45, the open interest changed by 3 which increased total open position to 7


On 7 Nov NMDC was trading at 238.91. The strike last trading price was 40, which was 2.20 higher than the previous day. The implied volatity was -, the open interest changed by 0 which decreased total open position to 4


On 6 Nov NMDC was trading at 241.06. The strike last trading price was 37.8, which was 0.15 higher than the previous day. The implied volatity was -, the open interest changed by 0 which decreased total open position to 4


On 5 Nov NMDC was trading at 234.73. The strike last trading price was 37.65, which was 11.60 higher than the previous day. The implied volatity was 52.89, the open interest changed by 0 which decreased total open position to 4


On 4 Nov NMDC was trading at 226.50. The strike last trading price was 26.05, 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 1 Nov NMDC was trading at 222.84. The strike last trading price was 26.05, which was -2.45 lower than the previous day. The implied volatity was 43.27, the open interest changed by 0 which decreased total open position to 4


On 31 Oct NMDC was trading at 221.87. The strike last trading price was 28.5, 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 30 Oct NMDC was trading at 224.26. The strike last trading price was 28.5, 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 29 Oct NMDC was trading at 226.14. The strike last trading price was 28.5, 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 28 Oct NMDC was trading at 227.96. The strike last trading price was 29.5, 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 25 Oct NMDC was trading at 217.83. The strike last trading price was 29.5, 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 24 Oct NMDC was trading at 215.85. The strike last trading price was 29.5, 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 23 Oct NMDC was trading at 218.28. The strike last trading price was 29.5, 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 22 Oct NMDC was trading at 215.41. The strike last trading price was 29.5, 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 21 Oct NMDC was trading at 225.59. The strike last trading price was 29.5, which was -6.05 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to


On 18 Oct NMDC was trading at 231.44. The strike last trading price was 35.55, 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 Oct NMDC was trading at 224.02. The strike last trading price was 35.55, 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 NMDC was trading at 231.40. The strike last trading price was 35.55, which was -1.45 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to


On 15 Oct NMDC was trading at 232.08. The strike last trading price was 37, 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 NMDC was trading at 237.05. The strike last trading price was 37, 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 NMDC was trading at 233.68. The strike last trading price was 37, which was 6.00 higher than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to


On 10 Oct NMDC was trading at 226.36. The strike last trading price was 31, which was -5.15 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to


On 9 Oct NMDC was trading at 224.18. The strike last trading price was 36.15, 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 8 Oct NMDC was trading at 218.99. The strike last trading price was 36.15, 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 7 Oct NMDC was trading at 228.74. The strike last trading price was 36.15, 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 4 Oct NMDC was trading at 236.56. The strike last trading price was 36.15, 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 3 Oct NMDC was trading at 239.40. The strike last trading price was 36.15, 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 1 Oct NMDC was trading at 244.53. The strike last trading price was 36.15, 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 30 Sept NMDC was trading at 244.91. The strike last trading price was 36.15, 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 27 Sept NMDC was trading at 235.18. The strike last trading price was 36.15, 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 26 Sept NMDC was trading at 234.29. The strike last trading price was 36.15, 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 25 Sept NMDC was trading at 225.80. The strike last trading price was 36.15, 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 24 Sept NMDC was trading at 223.93. The strike last trading price was 36.15, 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 23 Sept NMDC was trading at 215.39. The strike last trading price was 36.15, 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 20 Sept NMDC was trading at 212.54. The strike last trading price was 36.15, 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 19 Sept NMDC was trading at 212.38. The strike last trading price was 36.15, 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 18 Sept NMDC was trading at 212.12. The strike last trading price was 36.15, 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 11 Sept NMDC was trading at 206.79. The strike last trading price was 36.15, which was 36.15 higher than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to


On 5 Sept NMDC was trading at 212.70. 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 4 Sept NMDC was trading at 211.09. 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 NMDC was trading at 216.41. 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


NMDC 28NOV2024 200 PE
Delta: -0.09
Vega: 0.05
Theta: -0.16
Gamma: 0.01
Date Close Ltp Change IV Volume Change OI OI
21 Nov 217.63 0.6 -0.20 48.68 808 -29 651
20 Nov 221.22 0.8 0.00 49.86 461 10 678
19 Nov 221.22 0.8 0.20 49.86 461 8 678
18 Nov 222.71 0.6 -0.40 46.79 1,145 50 679
14 Nov 218.80 1 0.25 40.70 1,017 71 632
13 Nov 223.21 0.75 0.05 42.54 783 -80 567
12 Nov 224.76 0.7 0.15 40.90 1,214 55 649
11 Nov 232.93 0.55 -0.05 47.16 425 55 597
8 Nov 235.97 0.6 0.15 45.23 385 -13 542
7 Nov 238.91 0.45 0.00 45.44 214 -14 556
6 Nov 241.06 0.45 -0.20 46.38 518 29 571
5 Nov 234.73 0.65 -1.00 43.66 996 55 551
4 Nov 226.50 1.65 -0.90 46.06 1,080 165 508
1 Nov 222.84 2.55 0.25 45.78 43 16 343
31 Oct 221.87 2.3 0.30 - 339 91 327
30 Oct 224.26 2 0.25 - 127 47 234
29 Oct 226.14 1.75 -0.25 - 337 62 186
28 Oct 227.96 2 -0.05 - 1 125 125
25 Oct 217.83 2.05 0.00 - 0 -1 0
24 Oct 215.85 2.05 -1.15 - 1 0 126
23 Oct 218.28 3.2 -0.55 - 175 11 128
22 Oct 215.41 3.75 1.70 - 118 -20 115
21 Oct 225.59 2.05 0.55 - 64 48 135
18 Oct 231.44 1.5 -0.95 - 39 -6 88
17 Oct 224.02 2.45 1.00 - 97 45 94
16 Oct 231.40 1.45 0.05 - 16 5 48
15 Oct 232.08 1.4 0.00 - 15 2 43
14 Oct 237.05 1.4 -0.20 - 17 2 41
11 Oct 233.68 1.6 -0.90 - 47 6 39
10 Oct 226.36 2.5 -0.80 - 16 -2 33
9 Oct 224.18 3.3 -0.95 - 25 -1 35
8 Oct 218.99 4.25 2.15 - 72 11 36
7 Oct 228.74 2.1 0.95 - 39 -23 26
4 Oct 236.56 1.15 0.00 - 24 -5 49
3 Oct 239.40 1.15 0.15 - 32 -1 54
1 Oct 244.53 1 -0.05 - 48 9 55
30 Sept 244.91 1.05 -0.35 - 41 16 46
27 Sept 235.18 1.4 -0.30 - 14 10 29
26 Sept 234.29 1.7 -0.90 - 10 5 19
25 Sept 225.80 2.6 0.20 - 5 3 14
24 Sept 223.93 2.4 -6.25 - 11 9 9
23 Sept 215.39 8.65 0.00 - 0 0 0
20 Sept 212.54 8.65 0.00 - 0 0 0
19 Sept 212.38 8.65 0.00 - 0 0 0
18 Sept 212.12 8.65 0.00 - 0 0 0
11 Sept 206.79 8.65 0.00 - 0 0 0
5 Sept 212.70 8.65 0.00 - 0 0 0
4 Sept 211.09 8.65 0.00 - 0 0 0
2 Sept 216.41 8.65 - 0 0 0


For Nmdc Ltd. - strike price 200 expiring on 28NOV2024

Delta for 200 PE is -0.09

Historical price for 200 PE is as follows

On 21 Nov NMDC was trading at 217.63. The strike last trading price was 0.6, which was -0.20 lower than the previous day. The implied volatity was 48.68, the open interest changed by -29 which decreased total open position to 651


On 20 Nov NMDC was trading at 221.22. The strike last trading price was 0.8, which was 0.00 lower than the previous day. The implied volatity was 49.86, the open interest changed by 10 which increased total open position to 678


On 19 Nov NMDC was trading at 221.22. The strike last trading price was 0.8, which was 0.20 higher than the previous day. The implied volatity was 49.86, the open interest changed by 8 which increased total open position to 678


On 18 Nov NMDC was trading at 222.71. The strike last trading price was 0.6, which was -0.40 lower than the previous day. The implied volatity was 46.79, the open interest changed by 50 which increased total open position to 679


On 14 Nov NMDC was trading at 218.80. The strike last trading price was 1, which was 0.25 higher than the previous day. The implied volatity was 40.70, the open interest changed by 71 which increased total open position to 632


On 13 Nov NMDC was trading at 223.21. The strike last trading price was 0.75, which was 0.05 higher than the previous day. The implied volatity was 42.54, the open interest changed by -80 which decreased total open position to 567


On 12 Nov NMDC was trading at 224.76. The strike last trading price was 0.7, which was 0.15 higher than the previous day. The implied volatity was 40.90, the open interest changed by 55 which increased total open position to 649


On 11 Nov NMDC was trading at 232.93. The strike last trading price was 0.55, which was -0.05 lower than the previous day. The implied volatity was 47.16, the open interest changed by 55 which increased total open position to 597


On 8 Nov NMDC was trading at 235.97. The strike last trading price was 0.6, which was 0.15 higher than the previous day. The implied volatity was 45.23, the open interest changed by -13 which decreased total open position to 542


On 7 Nov NMDC was trading at 238.91. The strike last trading price was 0.45, which was 0.00 lower than the previous day. The implied volatity was 45.44, the open interest changed by -14 which decreased total open position to 556


On 6 Nov NMDC was trading at 241.06. The strike last trading price was 0.45, which was -0.20 lower than the previous day. The implied volatity was 46.38, the open interest changed by 29 which increased total open position to 571


On 5 Nov NMDC was trading at 234.73. The strike last trading price was 0.65, which was -1.00 lower than the previous day. The implied volatity was 43.66, the open interest changed by 55 which increased total open position to 551


On 4 Nov NMDC was trading at 226.50. The strike last trading price was 1.65, which was -0.90 lower than the previous day. The implied volatity was 46.06, the open interest changed by 165 which increased total open position to 508


On 1 Nov NMDC was trading at 222.84. The strike last trading price was 2.55, which was 0.25 higher than the previous day. The implied volatity was 45.78, the open interest changed by 16 which increased total open position to 343


On 31 Oct NMDC was trading at 221.87. The strike last trading price was 2.3, 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 30 Oct NMDC was trading at 224.26. The strike last trading price was 2, which was 0.25 higher than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to


On 29 Oct NMDC was trading at 226.14. The strike last trading price was 1.75, 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 28 Oct NMDC was trading at 227.96. The strike last trading price was 2, 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 25 Oct NMDC was trading at 217.83. The strike last trading price was 2.05, 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 Oct NMDC was trading at 215.85. The strike last trading price was 2.05, which was -1.15 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to


On 23 Oct NMDC was trading at 218.28. The strike last trading price was 3.2, 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 22 Oct NMDC was trading at 215.41. The strike last trading price was 3.75, which was 1.70 higher than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to


On 21 Oct NMDC was trading at 225.59. The strike last trading price was 2.05, which was 0.55 higher than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to


On 18 Oct NMDC was trading at 231.44. The strike last trading price was 1.5, 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 17 Oct NMDC was trading at 224.02. The strike last trading price was 2.45, 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 16 Oct NMDC was trading at 231.40. The strike last trading price was 1.45, 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 15 Oct NMDC was trading at 232.08. The strike last trading price was 1.4, 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 14 Oct NMDC was trading at 237.05. The strike last trading price was 1.4, 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 11 Oct NMDC was trading at 233.68. The strike last trading price was 1.6, 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 10 Oct NMDC was trading at 226.36. The strike last trading price was 2.5, 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 9 Oct NMDC was trading at 224.18. The strike last trading price was 3.3, 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 NMDC was trading at 218.99. The strike last trading price was 4.25, which was 2.15 higher than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to


On 7 Oct NMDC was trading at 228.74. The strike last trading price was 2.1, which was 0.95 higher than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to


On 4 Oct NMDC was trading at 236.56. The strike last trading price was 1.15, 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 3 Oct NMDC was trading at 239.40. The strike last trading price was 1.15, which was 0.15 higher than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to


On 1 Oct NMDC was trading at 244.53. 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 30 Sept NMDC was trading at 244.91. The strike last trading price was 1.05, which was -0.35 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to


On 27 Sept NMDC was trading at 235.18. The strike last trading price was 1.4, 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 26 Sept NMDC was trading at 234.29. The strike last trading price was 1.7, 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 25 Sept NMDC was trading at 225.80. The strike last trading price was 2.6, 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 24 Sept NMDC was trading at 223.93. The strike last trading price was 2.4, which was -6.25 lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to


On 23 Sept NMDC was trading at 215.39. The strike last trading price was 8.65, 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 NMDC was trading at 212.54. The strike last trading price was 8.65, 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 NMDC was trading at 212.38. The strike last trading price was 8.65, 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 NMDC was trading at 212.12. The strike last trading price was 8.65, 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 NMDC was trading at 206.79. The strike last trading price was 8.65, 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 NMDC was trading at 212.70. The strike last trading price was 8.65, 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 NMDC was trading at 211.09. The strike last trading price was 8.65, 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 NMDC was trading at 216.41. The strike last trading price was 8.65, which was lower than the previous day. The implied volatity was -, the open interest changed by which decreased total open position to