Friction between Wall Street banks and trading giants intensifies; JPMorgan Chase reduces Jane Street funding.

As non-bank trading firms rapidly encroach on the traditional banking landscape, the boundaries of cooperation and competition on Wall Street are being redefined.

According to a Financial Times report on Thursday, sources familiar with the matter revealed that JPMorgan Chase drastically reduced its bond trading financing to Jane Street last year, triggered by the trading firm's foray into U.S. Treasury market-making, creating direct competition with JPMorgan. This move signifies a substantial rift in the relationship between the largest U.S. bank and its most important non-bank client.

Sources familiar with the matter said the reduction in funding represents about 5% of Jane Street's total fixed-income funding from various banks and will not have a substantial impact on its 2025 revenue. However, the signal this move sends is far more profound than the numbers themselves—it reflects the growing contradictions within JPMorgan Chase: on the one hand, the bank has supported the rise of a strong competitor by providing funding, while on the other hand, it has to face the erosion of its core business by this competition.

The competitive landscape is changing as Jane Street makes a strong entry into the bond market.

Jane Street has transformed from a relatively low-profile proprietary trading firm into a significant player in the global market in recent years. Last year, the company traded over $900 billion in bonds, and its total trading revenue for 2024 is projected to reach $40 billion, only $1 billion less than JPMorgan Chase.

Jane Street's foray into U.S. Treasury market-making is its latest move in direct competition with traditional banks. Raman Kalra, Head of Analysis for Non-Bank Liquidity Providers at Crisil Coalition Greenwich, points out that trading firms like Jane Street and Citadel Securities are significantly benefiting from the shift of bond market trading to electronic platforms—the fixed income market was previously one of the few sectors still dominated by telephone and voice trading. Crisil data shows that by 2025, trading firms will account for 10% of total industry revenue in fixed income, currencies, and commodities.

Internal conflicts have surfaced, and the role of banks in financing has been questioned.

JPMorgan Chase's funding support for Jane Street has sparked significant internal discontent. According to sources familiar with the matter, traders at the bank are deeply resentful that by providing funding—particularly in the fixed income sector—they have helped nurture a powerful competitor.

Proprietary trading firms operate on a business model based on their own capital, but typically leverage their returns, making bank financing a mutually beneficial and stable source of income for both parties for a long time. However, as non-bank institutions continue to expand their business scope, this balance is being disrupted.

JPMorgan Chase's shift in attitude is not an isolated case. After Citadel Securities launched a client service that competed with the bank's equities business, JPMorgan Chase also reduced some of the trading features it offered. In his annual letter to shareholders released in April, JPMorgan Chase CEO Jamie Dimon listed Citadel Securities as an emerging competitor.

Behind Jane Street's rapid expansion, risks are also accumulating.

Despite its impressive revenue figures, Jane Street's aggressive strategy is beginning to show its costs. Some of the company's bets this year have already resulted in losses—reportedly, in July, Jane Street recorded a loss of approximately $15 billion due to trading positions related to AI stocks and investments in Situational Awareness, the hedge fund owned by 24-year-old Leopold Aschenbrenner.

Jane Street's rapid growth stemmed in part from its willingness to take on risk exposures that banks generally avoided after the 2008 financial crisis. This strategy contributed substantial returns when the market was favorable, but it also exposed it to greater downside pressure when market volatility intensified.

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