A bit grayer and world wearier, maybe, but there’s no mistaking the family resemblance between NYSE Chief Operating Office Larry Leibowitz and his kid brother Jon Stewart. Unlike the Daily Show host, Leibowitz mostly keeps a low profile, although he did find himself in the spotlight even before his appearance at the Reuters Global Exchanges and Trading Summit on Monday. The Wall Street Journal interviewed him in a story about the NYSE’s effort to turn some high frequency traders — who have been chipping away at the exchange’s business — into exchange floor traders.

Leibowitz may be sick of the Jon Stewart questions, but when pesky Reuters editors and journalists inevitably raised them, he answered them with relatively good humor.

“I know my mother’s pretty happy with both,” the NYSE’s resident electronic trading expert said when asked whether it was tough living in the shadow of the celebrated news comedian. Leibowitz allowed that it was hard to imagine two brothers who had chosen more different careers. At this point, they even have different last names, after Leibowitz’s younger brother adopted a stage name.

While Stewart hasn’t shied away from financial themes, especially in his much-hyped verbal smackdown with Jim Cramer, Leibowitz said his kid brother hasn’t been running to him to ask for advice, even when his show has tackled topics like short selling and high frequency trading. But he admitted that being an older sibling, “I give it to him anyway sometimes.”

Would he ever go on the Daily Show as a guest? That would be a no. “I probably wouldn’t make a very good guest,” he said, noting he didn’t have any books to plug. “I have tried to fly under the radar.”