Addie Pinkster, founder of Adelpha, which invests in companies, says that there is unconscious bias when it comes to backing start-ups run by women.
She was speaking to BBC Radio 4's Today Programme after the publication of a government-commissioned report by Royal Bank of Scotland executive Alison Rose.
Ms Pinkster says women are not more risk-adverse. "In my experience they are less risky," she said.
When women-run businesses present to her, she says she finds they have "much more robust financial models, more realistic valuations and, in short, make much more compelling investments".