Major Wall Street banks are poised to report their highest investment banking fee revenue in four and a half years this week, fueled by the landmark SpaceX initial public offering and a resurgence in large-scale merger and acquisition activity.

Projections indicate that the five leading U.S. investment banks—JPMorgan Chase, Goldman Sachs, Morgan Stanley, Bank of America, and Citigroup—are expected to see a 27% year-over-year increase in their second-quarter advisory fees.

The total fee pool is anticipated to reach $11.1 billion, marking the highest level since the sector's previous peak in 2021.

A significant portion of this growth is attributed to equity capital markets, where the combined revenue for these top five banks is forecast to be $2.5 billion. The primary catalyst is the $500 million in underwriting fees generated by the SpaceX IPO for its 23 collaborating banks, setting a new global record for public offering fees. Goldman Sachs and Morgan Stanley are each estimated to have earned approximately $100 million from this single transaction.

Brian Malbury, Chief Market Strategist at Zacks Investment Management, commented, "The SpaceX offering was a massive deal, and we expect all participating underwriters to see a significant benefit."

Both industry bankers and analysts note that a wave of large technology companies, including SpaceX, OpenAI, and Anthropic, have either gone public or are preparing to enter the capital markets.

However, the high-interest-rate environment has led to a quieter period for IPOs from smaller, private equity-backed firms.

M&A advisory fees for the five major banks are projected to surge by roughly 30% year-over-year, surpassing $4 billion. This represents the first time since 2021 that the sector's fees have remained above the $4 billion mark for three consecutive quarters.

The revival of mega-deals valued over $10 billion has provided a substantial windfall for Wall Street advisors. Morgan Stanley noted in a client report this week that the global value of announced M&A deals could reach a record high by 2026.

JPMorgan Chase, Goldman Sachs, Morgan Stanley, Bank of America, Citigroup, and Wells Fargo are all scheduled to report earnings on Tuesday, with Morgan Stanley's release following on Wednesday. The combined net profit for these six banks in the second quarter is estimated at around $44 billion, an 18% increase from the previous year.

Banks' trading divisions are also expected to have benefited from heightened market volatility, providing client execution and financing services, with equity trading showing particularly strong growth.

While the investment banking segment is expanding, credit losses have remained relatively contained, supporting a rally in bank stocks. The sector has outperformed the broader market over the past two years, leading some to question how much further share prices can climb.

Saul Martinez, Head of U.S. Financials Equity Research at HSBC, stated, "The bar for expectations has been raised. This quarter's results should be good, but the market has largely anticipated this, and the share price movement has already reflected that."

Investors will also be scrutinizing bank balance sheets for signs of stress among American households. So far, consumers have shown resilience despite various headwinds like import tariffs, geopolitical tensions, and rising oil prices.

Martinez added, "The real concern would be a scenario where conflicts escalate further, oil prices spike again, and inflation re-accelerates. That's when growth would become a worry."