PoP is missing or differs from my broker's

PoP is missing from the toolbar. There is no live curve yet; it appears with quotes. If the graph is empty, see The risk graph is empty or still loading.

PoP differs from my broker’s. By design: platforms use other distributions. Hover PoP to see Tented’s (the expiration’s smile, or a lognormal at the at-the-money IV). See Probability of profit.