The percentage of total available impressions your ads received compared to the total you were eligible to receive, indicating how fully you are capturing potential visibility for targeted keywords and audiences.
Impression share reveals opportunity gaps in paid advertising campaigns, showing what percentage of potential visibility you are missing due to budget constraints, low ad rank, or other factors. Financial services advertisers use impression share data to make informed decisions about budget allocation and bid strategy optimization.
Search impression share measures how often your ads appeared compared to total searches for your keywords. Losing impression share to budget means your daily budget exhausted before day end, indicating opportunity to increase spend. Losing to ad rank means competitors outbid you or have higher quality scores, suggesting bid increases or quality improvements needed.
For example, a mortgage lender running Google Ads might have 35% search impression share for "refinance mortgage" keywords, meaning they are missing 65% of potential visibility. Budget reports showing 40% impression share lost to budget suggest increasing daily spend could capture more volume. A wealth management firm with 60% impression share but losing 30% to ad rank should focus on improving ad relevance and landing page experience rather than simply increasing bids.
Target impression share bidding automatically adjusts bids to achieve a specified impression share percentage, useful when visibility goals are priority over cost-per-acquisition targets. Monitoring impression share by device, location, and time of day identifies where campaigns have headroom for expansion versus where you are already capturing available demand.
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