The purpose of this field is to provide a price for valuing a portfolio taking into account that the security may not have traded today.

Price Traded Securities
If there was a trade today, then the LAST price adjusted by either a higher BID price or a lower ASK price is used to create the valuation price. If there were no trades today, then yesterday’s VALUATION price, adjusted by a higher BID price or a lower ASK price, becomes the new VALUATION price.

Yield Traded Securities
This field is zero filled for all yield traded securities.

Market Maker Securities
The last highest BID entered becomes the VALUATION price. If there were no BIDS entered today, then yesterday's VALUATION price becomes the new VALUATION price proxy.