ceoaliongroo

/* Returns probability of occuring below and above target price. */
function probability(price, target, days, volatility) {
  
  var p = price;
  var q = target;
  var t = days / 365;
  var v = volatility;
  
  var vt = v*Math.sqrt(t);
  var lnpq = Math.log(q/p);