Key Takeaways Citigroup plans to grow its Japan investment banking staff by 30% by the first half of 2026.C is expanding as Japan M&A volumes are projected near $350 billion in 2025, the highest on record.Citigroup sees attractive fees as complex deals grow and financing taps Japan's deep private capital.Citigroup Inc. (C) is accelerating its investment banking (IB) growth plans in Japan to take advantage of an unprecedented boom in merger and acquisition (M&A) activity that is reshaping the country’s corpo ...