Gross' performance since joining Janus Capital Group Inc as a portfolio manager has been mixed.
The Janus Global Unconstrained Bond Fund, which he has been managing, posted cash withdrawals of $39.1 million in June, the second consecutive month of outflows for the portfolio.
Gross declined to comment for this story through a Janus spokeswoman.
Pimco executives say that investors are noticing that the firm's outlook has improved markedly.
"People are excited because they clearly see that despite the short-term pain, in terms of the unwanted and negative media attention, the medium-term and long-term is better now than it was before," said Scott Mather, lead portfolio manager of the Pimco Total Return Fund.
Pimco executives rarely talk publicly about this renewed confidence. Ivascyn has appeared only once on CNBC since Gross' exit on September 26. In contrast, Gross has been on the business channel 10 times during the same period, according to CNBC.
Ivascyn said the Newport Beach, California-based Pimco still makes big, bold economic and investment calls but there's no burning desire to publicize them as Gross did.
"When you talk to clients and you talk to the media, at times, you reduce investment calls down to a sound bite or very simple views on the world," Ivascyn said.