Despite tensions in the Middle East and an ever-changing macroeconomic environment, the first quarter of 2026 has been the best ever for large corporate deals. Mergers such as Unilever PLC’s merger with McCormick to create a global flavor tycoon, and huge pharmaceutical companies such as Eli Lilly acquiring Centessa Pharmaceuticals to add to their insomniatic portfolio, have been viral within the investment sector. In addition to these gigantic mergers and acquisitions, a new potential joint deal may take form in the coming months, one that’s between Sumitomo Mitsui Financial Group and Jefferies.

A deal between Japan's second-largest bank and one of the leading investment banks in the United States could create a powerhouse in leveraged finance and cross-border deals. Currently, SMBC Nikko has a 20% stake in Jefferies, and this has formed a collaborative relationship between the two giants across M&A, equity, and debt capital markets. The acquisition would only strengthen the relationship, allowing SMFG to gain a vital US-based investment banking subsidiary and accelerate its global expansion through a well-established link to the US market. The Financial Times reported that SMFG has assigned a small team to monitor Jefferies’ share price until it drops low enough that the acquisition becomes favorable.

Although a potential acquisition is in the works, there are still barriers that prevent a fully solidified deal. The first being regulatory obstacles, such as laws that require cross-border bank acquisitions to undergo strict government scrutiny by the Federal Reserve. The Bank Holding Company Act is one of these obstacles that regards a complete acquisition by a foreign bank to comply with U.S. risk management, capital adequacy, and liquidity standards, which can be tedious for foreign banks to deal with. Another potential obstacle could be the cultural differences between the two banks. Cultural misalignment is often responsible for failed mergers and acquisitions. Jefferies has built up a reputation for having an aggressive approach, frequently deemed as an “eat-what-you-kill” ethos. On the other hand, SMFG focuses on long-term relationships, risk management, and stability. The two firms’ differing workplace approaches could lead to cultural friction, with SMFG’s more conservative approach potentially dampening Jefferies’ aggressive edge, while Jefferies’ dynamic style may strain SMFG’s traditionally cautious framework.

Apart from the government and cultural issues, a quantitative perspective on this deal would produce a more robust response. If the acquisition was completed, the estimated new Pro Forma EPS would be $2.747 per share, compared to SMFG’s original EPS of $2.604 per share. This indicates that the deal would be accretive in nature and thus profitable. However, this only represents a short-term market reaction if the deal takes place. If we want to look at the true long-term value this deal could generate, we should compare the Return on Invested Capital and the Weighted Average Cost of Capital. The estimated ROIC if the acquisition were carried out would be 2.1%, while the WACC would be a significant 7.5%. Because the WACC exceeds that of the ROIC, this would suggest a destructive value if the deal were to take place, as the company would earn less on its investments than it costs to finance them, resulting in negative economic profit.

Taken at face value, this deal looks attractive; however, onerous cultural and governmental challenges, along with a negative outlook on long-term value creation, contribute to an unfavorable outcome for SMFG. Although the EPS could seem accretive at first, this could be due to cutting SG&A expenses, which is not unusual for an acquisition of firms with different workplace cultures, and as a result, shows up as an immediate reduction in operating expenses and boosts net income, inherently increasing the EPS and short-term value creation. However, in the long run, this could prove disastrous as over-cutting could reduce productivity, erode products and services, or result in lower cash flows in the future years. Thus, it might not be wise for SMFG to acquire Jefferies as a US subsidiary branch. Ultimately, the supposedly accretive deal could eventually lead to significantly less returns in the long run, making the deal unprofitable as Jefferies becomes a liability for SMFG’s subsidiary branches.