A bid strategy shared across several campaigns so the algorithm optimizes the group rather than each campaign alone, with optional bid caps and floors. Portfolios let an advertiser hold a target across a set of campaigns without starving smaller ones.
Related terms
Cite this entry:
Agency Echelon. "Portfolio Bid Strategy." Agency Echelon Reference, reviewed September 2026. https://agencyechelon.com/reference/glossary/portfolio-bid-strategy/