A high unfilled rate on your inventory must not be a problem. Unfilled or unsold inventory may come from a strategy of dynamic price floors that creates incremental revenue for the publisher. With real-time floor price calculation, Opti Yield solution encourages buyers to make competitive offers for ad units. Setting a minimum accepted price dynamically, according to multiple signals, helps control bids and optimize the revenue per auctions, assuming that unsold inventory is a normal consequence.