If you are a fintech startup, then few things are more important than access to financial market data.

And for those companies participating in the FinTech Sandbox, an “enabler of startups” that begins March 26 in Boston, that access just got even easier.

Cloud-based financial markets data provider Xignite will join the FinTech Sandbox’s roster of data partners. This roster includes three other companies fintech fans will be familiar with: Finovate alum Yodlee and FinDEVr alums Tradier and Plaid.

“Market data is the lifeblood of fintech,” said Xignite CEO Stephane Dubois, talking about his company’s participation in the Sandbox. “Without full access to these data points in the early stage of development and testing, many emerging players would not be able to reach their full potential .”

FinTech Sandbox is a nonprofit organization based in Boston that is dedicated to supporting emerging fintech companies. Participants in the six-month program get access to data feeds and APIs from leading data providers, cloud hosting from the program’s infrastructure partners, beta test partners, working office space, and “opportunities to collaborate with a vibrant community of entrepreneurs, mentors, partners, investors, and service providers.” The program begins March 26.