Mountaingate Capital (Mountaingate) portfolio company Acceleration Partners (AP), the leading global partnership marketing agency, has announced it is bolstering its influencer marketing offerings with the acquisition of Influencer Response, one of the industry’s first direct response-focused influencer agencies, and Volt Agency, a boutique performance marketing firm specializing in the growth of direct-to-consumer (DTC) businesses. Influencer Response and Volt had previously merged in May of 2022. This strategic acquisition marks AP’s fourth since partnering with Mountaingate in 2020, and the second of this year.