Quartile Acquires Sidecar to Create Largest Cross-Channel E‑Commerce Advertising Platform

Quartile has acquired Sidecar, combining their machine-learning-driven ad optimization platforms to form the largest cross-channel e-commerce advertising solution and doubling ad spend under management to about $2 billion. The combined company will serve more than 5,000 brands across 26 countries; Rockbridge Growth Equity remains the lead institutional investor and existing Sidecar shareholders retain a meaningful stake in the post-acquisition entity. Terms were not disclosed.