The most common and most likely answer to this crossword clue is the 6 letter word BROKER
I've seen this crossword clue in The Times
B
R
O
K
E
R
More clues leading to the result BROKER
- Lacking cash, dealer finally becomes agent
- Runs after ruined trader
- Selling agent, maybe, even more hard up?
- Negotiate with decreasing funds?
- Runs after cash-strapped agent
- Negotiator crushed spirit of resistance
- Brother accepted case in error as go-between
- The more impecunious won’t need one
- Agent, having no money, beginning to rue
- With no money, runs to a middleman
Buddy explains!

The straight part
We know that "trader" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case trader = broker.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does BROKER mean?
BROKER adjective- Financially ruined, bankrupt.
- Without any money, penniless.
- Broken.
- Demoted, deprived of a commission.
- A mediator between a buyer and seller.
- A stockbroker.
- A mediator in general, one who liaises between two or more parties to attempt to achieve an outcome of some kind.
- An agent involved in the exchange of messages or transactions.
- To act as a broker; to mediate in a sale or transaction.
- To act as a broker in; to arrange or negotiate.