What do Strength and Source mean on the OP Card?

Strength indicates how supported the OP price is by observable market activity. ‘High’ indicates a large amount of data with low variability across observations. ‘Medium’ indicates a moderate amount of data with some variability, and ‘Low’ indicates a limited amount of data and/or high variability.

Source identifies how the price is derived. ‘Market’ indicates that market data from the as-of-date is used directly in calculating the price. ‘Model’ indicates the price was calculated using a model because there was limited or no market data available from the as-of-date.