Anthony 在过去 90 天内拥有超过 500 名打开但未提交表格的受众。根据领英数据，要开始建立再营销目标受众，该数量是否足够？

No, 500 opens without form submissions over 90 days is not enough to start building a retargeting audience on LinkedIn. LinkedIn's minimum audience size for retargeting is generally 300 members. While Anthony has 500 opens, it's crucial to understand that "opens" do not equate to "members." An open indicates someone viewed the content, but LinkedIn's retargeting audience is based on unique members who have performed a specific action (like visiting a website, watching a video, or engaging with a Lead Gen Form). Without knowing how many unique members these 500 opens represent, it's impossible to confirm if the 300-member threshold for a retargeting audience is met. Therefore, the current data is insufficient to meet the platform's requirements.