The answer seems to be yes, but the data are elusive. This 2014 article indicates 30 percent of RIAs are women, and you would guess the percentage is higher today.
But counting RIAs proves difficult. Do you include hybrids who work for fees but also collect commissions? What about hedge fund managers?
Even the fuzzy figures indicate that the hundreds of thousands of brokers (aka financial advisers) vastly outnumber RIAs.