It is the largest player in derivatives, the financial vehicles that have been widely faulted for adding excessive risk to the system. It runs the largest hedge fund in the banking industry, the $21 billon Highbridge Capital unit, and makes billions of dollars’ worth of trades in its own account. And it has a network of retail branches in nearly every corner of the country.

“Given its franchise diversity, JPM is impacted by virtually all of the coming regulatory reforms,” Keith Horowitz, an analyst at Citigroup who follows big banks like JPMorgan, wrote in a research note last week.

One part of the bill would push much of the buying and selling of derivatives onto clearinghouses, forcing banks to put up collateral against each trade. For JPMorgan, that could tie up billions of dollars that would otherwise have gone toward lending or the bank’s own trading.

A smaller portion of trading in derivatives would take place over exchanges, making prices visible to the public and pushing down prices  and profit margins.

Image Jamie Dimon, the bank’s chief today. Credit... Michael Reynolds/European Pressphoto Agency

Banks would be required to hold more capital in reserve to cover potential trading losses. In some cases they might also be prohibited from using federally insured bank deposits for risky trading. That would hit JPMorgan hard because of its heavy reliance on customer deposits to finance other businesses.

Both changes would take even more money out of play and lower profits.

JPMorgan has already begun dismantling its so-called proprietary trading operation, to comply with new restrictions on banks making speculative bets using their own capital. Analysts say that will force the bank to give up about 2 percent of its revenue.