Option strike
You need all of the A1 thru A6 indicators
And plot Option Strike
A1
A1:=If(C<=2.5,LastValue(2.5),If(C<=5,LastValue(5),
If(C<=7.5,LastValue(7.5),If(C<=10,LastValue(10),
If(C<=12.5,LastValue(12.5),If(C<=15,LastValue(15),
If(C<=17.5,LastValue(17.5),If(C<=20,LastValue(20),
If(C<=22.5,LastValue(22.5),If(C<=25,LastValue(25),
C))))))))));
A1;
A2
A2:=If(C<=30,LastValue(30),If(C<=35,LastValue(35),
If(C<=40,LastValue(40),If(C<=45,LastValue(45),
If(C<=50,LastValue(50),If(C<=55,LastValue(55),
If(C<=60,LastValue(60),If(C<=65,LastValue(65),
If(C<=75,LastValue(75),If(C<=80,LastValue(80),
If(C<=85,LastValue(85),If(C<=90,LastValue(90),
If(C<=95,LastValue(95),If(C<=100,LastValue(100),
C))))))))))))));
A2;
A3
A3:=If(C<=110,LastValue(110),If(C<=120,LastValue(120),
If(C<=130,LastValue(130),If(C<=140,LastValue(140),
If(C<=150,LastValue(150),If(C<=160,LastValue(160),
If(C<=170,LastValue(170),If(C<=180,LastValue(180),
If(C<=190,LastValue(190),If(C<=200,LastValue(200),
If(C<=210,LastValue(210),If(C<=220,LastValue(220),
If(C<=230,LastValue(230),If(C<=240,LastValue(240),C))))))))))))));
A3;
A4
A4:= If(C<=250,LastValue(250),If(C<=260,LastValue(260),
If(C<=270,LastValue(270),If(C<=280,LastValue(280),
If(C<=290,LastValue(290),If(C<=300,LastValue(300),
If(C<=310,LastValue(310),If(C<=320,LastValue(320),
If(C<=330,LastValue(330),If(C<=340,LastValue(340),
If(C<=350,LastValue(350),If(C<=360,LastValue(360),
If(C<=370,LastValue(370),If(C<=380,LastValue(380),C))))))))))))));
A4;
A5
A5:=If(C<=390,LastValue(390),If(C<=400,LastValue(400),
If(C<=410,LastValue(410),If(C<=420,LastValue(420),
If(C<=430,LastValue(430),If(C<=440,LastValue(440),
If(C<=450,LastValue(450),If(C<=460,LastValue(460),
If(C<=470,LastValue(470),If(C<=480,LastValue(480),
If(C<=490,LastValue(490),If(C<=500,LastValue(500),
If(C<=510,LastValue(510),If(C<=520,LastValue(520),
C))))))))))))));
A5;
A6
A6:=If(C<=510,LastValue(510),If(C<=520,LastValue(520),
If(C<=530,LastValue(530),If(C<=540,LastValue(540),
If(C<=550,LastValue(550),If(C<=560,LastValue(560),
If(C<=570,LastValue(570),If(C<=580,LastValue(580),
If(C<=590,LastValue(590),If(C<=600,LastValue(600),
If(C<=610,LastValue(610),If(C<=620,LastValue(620),
If(C<=630,LastValue(630),If(C<=640,LastValue(640),
C))))))))))))));
A6;
Option Strike
A7:=If(C<=25,2.5,If(C>25 AND C<100,5,10));
A8:=If(C<=25,Fml("A1"),If(C>25 AND C<=100,Fml("A2"),If(C<=240,
Fml("A3"),If(C<=380,Fml("A4"),If(C<=520,Fml("A5"),Fml("A6"))))));
UPStrike2:=LastValue(A8+(A7*2));
UPStrike1:=LastValue(A7+A8);
UPStrike:=LastValue(A8);
DNStrike:=LastValue(A8-A7);
DNStrike1:=LastValue(A8-(A7*2));
DNStrike2:=LastValue(A8-(A7*3));
UPStrike2;
UPStrike1;
UPStrike;
DNStrike;
DNStrike1;
DNStrike2;