Several key metrics ticked up for Interactive Brokers Group (NYSEMKT:IBKR) in April. According to data released by the company, its daily average revenue trades -- considered a crucial measure in the industry -- grew by 17% on a year-over-year basis, and 7% over March, to land at roughly 480,000.

Also trending northward was the figure for customer equity at the end of the month, which stood at $36.4 billion. This was 25% higher than at the end of April 2012 and represented a 2% gain on a month-over-month basis.

Ending customer credit balances advanced to $22.6 billion, or 20% higher, than the year-ago figure. That amount was a 0.4% improvement over March's number.