In the past 24 hours, Reuters reported that Wall Street banks are capitalizing on a booming wave of AI infrastructure investment, which is fueling a surge in dealmaking and financing activity. Bank of America alone has helped raise nearly $500 billion for AI‑related companies since 2025—accounting for 60% of such fundraising across investment‑grade debt, leveraged finance, and equity capital markets (fidelity.com).
Goldman Sachs CEO David Solomon described the current environment as an “AI capex super cycle,” noting that the build‑out of AI infrastructure is still in its early stages and expected to sustain elevated levels of strategic activity, financing, and capital formation across markets (fidelity.com). Morgan Stanley echoed this sentiment, projecting AI‑related capital expenditure to reach $850 billion in 2026—up from an earlier forecast of $575 billion—and potentially climb to $1.3 trillion in 2027 and $1.5 trillion in 2028 (fidelity.com).
This AI‑driven financing boom is reshaping capital markets. Banks are not only underwriting massive deals—such as SK Hynix’s $26.5 billion ADR offering and SpaceX’s record‑setting $86 billion IPO—but also extending credit lines to AI firms like OpenAI, with Bank of America recently providing a $520 million loan (fidelity.com). The scale and velocity of these transactions underscore how AI investment is becoming a dominant force in financial services.
As of July 15, 2026, this trend marks one of the most significant recent developments in market‑finance AI: a self‑reinforcing cycle where AI infrastructure spending drives capital markets activity, which in turn fuels further AI deployment. The implications are profound—banks are emerging as key enablers of the AI economy, while the sheer magnitude of financing raises questions about sustainability, risk concentration, and the long‑term impact on financial stability.
The story continues to unfold, but for now, the AI capex super‑cycle is firmly in motion—and Wall Street is at its center.