CBRE Group Inc. has hooked a new company as part of ongoing efforts to enhance its status as a big fish in the world of commercial real estate services.

The downtown-based firm said Monday that it has purchased Capstone Financial Solutions, a finance firm that targets private and middle-market investors, for an undisclosed amount.

Based in St. Louis with offices in Kansas City, Capstone can help CBRE expand its debt financing footprint across the Midwest, said Jeff Majewski, an executive managing director at CBRE. Capstone also operates in Beverly Hills, Tampa, Dallas, and Indianapolis, and its new L.A. base will be in CBRE’s Century City office.

CBRE also targeted Capstone for access to the firm’s software that can help process loan transactions quickly.

“We saw the opportunity to dive into that part of the business and see if we can leverage off that efficiency,” Majewski said.

The acquisition fits into CBRE’s bigger strategy of snapping up smaller companies that align with its own services. CBRE made four acquisitions last year and one in January.

“We’re always in the market for those types of opportunities where we can grow quicker by buying or acquiring something versus doing it organically or through strategic recruiting,” said Majewski. “There’s no transaction that’s too small, or too large, from an M&A standpoint, if it’s a strategic fit.”

He would not disclose the terms of the deal.