Speculators tried to “corner” (control and squeeze) the market in United Copper stock but failed. The sharp price reversal damaged confidence and created losses that spread through Wall Street firms tied to the deal. This shock set the stage for the broader October 1907 crisis in New York finance.
As concerns grew about the trusts (lightly regulated financial firms that acted like banks), Knickerbocker Trust’s clearing support was withdrawn, signaling it might not be able to settle payments smoothly. That announcement intensified fear among depositors and other institutions. It also tightened credit for brokers who depended on loans ultimately linked to trust-company funds.
Depositors rushed to withdraw money from Knickerbocker Trust, creating a classic bank run. After heavy withdrawals, the trust suspended operations. The failure quickly spread panic to other New York trust companies and pushed more lenders to pull back from Wall Street.
With confidence shaken, depositors turned to other large trust companies, including the Trust Company of America. A run began as people lined up to withdraw cash. Keeping this institution open became a major goal because another large trust failure could have worsened the market’s credit freeze.
Treasury Secretary George B. Cortelyou responded by placing federal government deposits into national banks in New York. This was meant to add cash reserves and reduce pressure from withdrawals. It was one of the key public actions supporting the private rescue efforts during the worst week of the panic.
Credit for stock-broker loans (“call money,” very short-term loans secured by stock collateral) became extremely scarce. Rates jumped sharply, signaling that brokers could be forced to dump stocks quickly if they could not borrow. The squeeze brought NYSE trading close to breaking down as firms struggled to finance normal settlement.
NYSE President Ransom H. Thomas warned that the Exchange might have to close early, which leaders feared would signal collapse. J. P. Morgan gathered bank presidents and pressed them to pledge a large emergency pool of funds for call loans. The money reached the market in time for the Exchange to complete the day’s trading, helping avoid an immediate shutdown.
Market stress continued the next day, requiring renewed support for broker loans. The rescue group extended additional funds to keep Wall Street credit from seizing up again. This back-to-back intervention helped stabilize trading conditions even as bank and trust withdrawals continued elsewhere.
As cash became scarce, the New York Clearing House authorized “clearinghouse loan certificates,” a paper substitute used to settle balances so banks could conserve currency. These certificates acted as emergency liquidity inside the banking system. The step was a practical way to keep payments moving when normal cash flows were disrupted.
Even after the stock-market rescue pool and the clearinghouse certificates, depositors continued pulling funds from trust companies for weeks. The pressure showed that stabilizing the NYSE alone was not enough; the broader banking and payments system also needed confidence to return. This extended strain helped convince policymakers that the U.S. lacked a strong crisis-management framework.
In response to repeated financial panics and the 1907 breakdown risk in New York markets, Congress passed the Aldrich–Vreeland Act. The law created the National Monetary Commission to study banking reform and also provided a temporary way to expand emergency currency. It marked a major shift from ad hoc rescues toward planned national reforms.
The Federal Reserve Act created the Federal Reserve System to provide a more reliable lender of last resort and improve liquidity in crises. The 1907 experience—when private bankers and clearinghouses had to fill that role—was a key motivation in the reform movement. The new system aimed to reduce the chance that NYSE trading and U.S. credit would again hinge on emergency private pools.
New York Stock Exchange crash, trading interruptions, and recovery (October 1907)