Janus on Thursday reported net income of $46.7 million, or 24 cents per share, compared with $38.3 million, or 21 cents per share, a year earlier.
Read MoreBill Gross invested over $700M in Janus bond fund
Analysts surveyed by Thomson Reuters I/B/E/S on average had expected a profit of 20 cents per share.
Shares of Janus are up 47 percent since its surprise hiring of Gross from Pacific Investment Management Co, which was announced on Sept. 26. After his arrival, investors added an estimated $1.3 billion to his Janus Global Unconstrained Bond Fund, according to Morningstar.