Undisclosed principal
A legal conundrum most relevant in the context of agency orders for securities and derivatives placed with a broker-dealer by an asset manager in bulk on behalf of several clients. Typically the agent will place the order first, and advise the executing broker of the identity of the principals to whom the securities should be allocated later in the day.
The question arises: who is liable for those executed transactions in the mean time? The broker doesn't know who the principal is, so can hardly take up matters with it directly. On the other hand, asset managers who act as agent will hotly deny any kind of liability, appealing to their regulatory status, meagre capitalisation, or sheer importance as a valued client in intimating that this ought to be the broker's problem. So much bunk - all of these reasons.
An undisclosed principal is a principal for whom an agent acts where the agent does not reveal the principal's identity. It is not - or ought not - apply where an agent has neglected to mention the agency relationship altogether. An agent who has failed to reveal he is an agent at all (regardless for whom) - call that fellow an undisclosed agent - is better known as a principal. Or a liar.
Where an agent strikes a bargain without revealing its principal’s identity, it puts the counterparty at a disadvantage, since the counterparty does not, and cannot, know against whom it should seek to enforce the bargain.
The common law’s rather practical response is to make the agent de facto personally responsible for performance of the contract on behalf of its undisclosed principal. This is correctly described as still being an agency obligation, but un unconditional one: It must unconditionally obliged to perform the contract on behalf of its undisclosed principal and then make its own arrangements with the principal for reimbursement of moneys paid out (or received) on its behalf. The agent’s other remedy is to disclose the principal and invite the agent to take matters up with it directly.
See also