The firm, whose shares have halved over the past year on concerns over outflows and the performance of its funds, said assets under management rose to an estimated $59.5 billion from $58.4bn at end-December, as rising markets helped boost its fund performance.
CEO Peter Clarke said there had been a "significant" fall in net client outflows this year, particularly in February.
"If sentiment is maintained and performance continues... we'd expect it to translate into rising sales and net inflows," Clarke said on a call to journalists.
Clarke's prediction comes after a difficult few years for Man, which has suffered net client outflows in every quarter over the past three years, apart from the first two quarters of last year.
In September, it reported its fastest rate of outflows since early 2009 while in January it reported a slightly reduced pace of withdrawals and announced further job cuts.
Analysts at Goldman Sachs said in a note on Thursday that they estimated net outflows so far this year at $1.1bn.
"The pace of asset raising is likely to remain slow, at least in the first half of 2012, but this is already reflected in estimates and deeply discounted in the rating in our view," said Singer Capital Markets analyst Sarah Ing.
Man also held its dividend, which has been the subject of speculation given it is not currently covered by earnings, for 2011 and 2012 and said it would supplement future dividends with surplus capital.
The final dividend for the nine months to end-December is held at 7 cents a share, while the same annualised dividend of 22 cents will be paid this year.
In future, Man said it will pay out all of its adjusted management fee earnings each year in dividends. In addition, performance fee earnings will be added to its capital surplus and paid out over time via dividends and/or share buybacks.
"Through the financial crisis we've built capital reserves," said Clarke. "(In future) we'll be distributing performance fees, not accumulating capital."