Determining lot sizes in volatility indices trading can be challenging due to each synthetic index having its own unique lot size, unlike forex where all pairs share a standardized lot size, typically starting from 0.01.
MT5 operates using a unit system known as points, which represents the smallest increment by which an instrument's price can change. The value of a point varies across symbols based on their price precision.
For instance, symbols with prices having 2 decimal places (e.g., 1014.76) set 1 point equal to 0.01. Therefore, 500 points on such symbols would amount to 5.00. Examples of synthetic indices with two decimal places include V10 (1s), V200 (1s), and V25 (1s).
Symbols with prices having 4 decimal places (e.g., 1.1213) set 1 point equal to 0.0001. Thus, 500 points on these symbols would equate to 0.0050. This applies to volatility indices like V50.