Crunchbase's latest monthly ranking of startup investors puts Y Combinator at the top as the busiest investor in August. The list, which tracks activity across several categories, continues to be led by the same established names that have dominated recent months.

Nvidia stands out for ramping up its dealmaking pace during the month. The chipmaker's increased activity makes it one of the more notable movers in a field otherwise filled with repeat leaders.

The rankings cover lead backers, prolific venture dealmakers, highest spenders, and seed investors. In each category, familiar firms again took the top spots, according to the data.