Key Takeaways RDDT's ARPU rose 41% year over year to $5.04 in the third quarter of 2025. RDDT grew active advertisers by more than 75%, pushing ad revenue up 74% to $549 million. RDDT's international ARPU increased 39% year over year as global users and engagement expanded. Reddit (RDDT) is benefiting from solid Average Revenue Per User (ARPU) growth. In the third quarter of 2025, ARPU increased 41% year over year to $5.04, indicating that portfolio expansions are driving higher monetization per user. The c ...