JPMorgan Chase's dominance stems from its unmatched investment banking and trading operations, which generate obscene margins that BofA simply cannot replicate at scale. While both banks manage trillions in assets, JPM's 2023 net income of $49.6B dwarfs the broader market because it owns the relationships with every Fortune 500 CFO and sovereign wealth fund on the planet—that pricing power is worth tens of billions. BofA, by contrast, is structurally hobbled by the 2008 crisis aftermath: regulators imposed a hard asset cap that prevents it from growing beyond $3 trillion in assets, effectively capping its earnings ceiling while JPM operates with fewer constraints.

The wealth gap also reflects fundamental business architecture decisions made a decade ago. JPMorgan invested heavily in technology, quantitative trading, and private banking for ultra-high-net-worth individuals—all high-margin businesses. BofA doubled down on consumer banking and mortgage origination, which are volume games with razor-thin spreads. When interest rates were near zero, this strategy crushed BofA's net interest margins while JPM's diversified revenue streams kept printing money. Even now, with rates higher, BofA's retail deposit base can't generate the same returns as JPM's institutional and wealth management franchises.

Finally, the $145B gap reflects market perception of future earnings power. Investors value JPM at a premium multiple because it controls irreplaceable relationships and has proven pricing power in investment banking—something that won't disappear in a recession. BofA's regulatory shackles, persistent regulatory scrutiny, and exposure to consumer credit cycles make it a slower-growth story, hence the lower valuation. JPM is essentially a printing press for wealthy clients; BofA is a utility company that takes deposits and makes mortgages—and the market pays accordingly.