Avanda Investment Management, Fullerton Fund Management and JP Morgan Asset Management are the first three managers to be appointed, MAS said in an update to its earlier announcement in February.
At that time, the MAS announced that involves putting money with fund managers focused on investing in Singapore stocks.
These managers are expected to actively manage investments in a range of companies and draw in investments from other investors.
The programme was proposed by a review group established in August 2024 to strengthen Singapore's stock market and aims to complete its work by the end of 2025.
MAS said it has received strong interest in the Equity Market Development Programme, and is reviewing applications in batches to speed up the appointment and capital deployment process.
The factors taken into consideration were the alignment of their proposed fund strategies with the programme's objectives, the strength of their proposals to "crowd in" third-party capital and their commitment to expand or contribute to the growth of the asset management and research capabilities in Singapore.
"In particular, the fund strategies should have a clear focus on improving liquidity and broadening participation in Singapore equities, with significant allocation to small and mid-cap stocks," MAS said in a press release.
Deputy chairman for MAS Chee Hong Tat said: "The MAS team is currently assessing many other proposals that have come in, and we wanted to go with these three first because they are ready.
"We thought it would be better for us to proceed with these three while we continue to assess and work with the other asset managers, rather than to hold back all the proposals and finish assessing all of them before we announce the full list, so we'll take it in stages."
The next phase of selection is expected to be announced by the fourth quarter of this year.