Jeffrey Ubben acquired 2.88M Amazon.com shares worth $710M. That's 12.86% of their entire equity portfolio (2nd largest holding). Jeffrey Ubben started to build up the position in Amazon.com in Q4 2024 and continued to invest until Q2 2025. Since then they sold 988k shares. The stake costed the investor $574M, netting the investor a gain of 24% so far.