Pump.fun Ends 4x Referral Bonus Campaign, Continues to Distribute 100% of Platform Revenue. Pump.fun announced on the X platform that its limited-time 4x referral bonus campaign has ended, and the platform will continue to distribute 100% of its revenue. Referrer rewards have been adjusted to 1.5x, meaning referrers will receive 37.5% of the fees paid by the referred users. The remaining 62.5% of revenue will be used for callout rewards and in-app incentives. Pump.fun stated that it has distributed a total of $30 million in rewards to date.