Investor

Los Altos, California-based Gauss Surgical raised $1.

Aetna has agreed to acquire Chicago-based bswift, which offers a technology platform that powers health insurance exchanges, for approximately $400 million.

Rock Health has raised its third fund and will up its contribution to new companies from $100,000 to $250,000, the company announced this morning.

San Francisco, California-based running and cycling app maker Strava raised $18.

San Mateo-based startup Mousera raised $8.

Bellevue, Washington-based employee engagement platform Limeade raised $25 million in a round led by Oak HC/FT Partners.

San Francisco-based mobile-enabled health coaching services company Vida has raised $5 million in its first round of funding from Aspect Ventures, Khosla Ventures, Yahoo Co-Founder Jerry Yang, Signia Venture Partners, The Valley Fund, Yahoo Chairman Maynard Webb, Silicon Valley Bank's Kevin Scott, and Skip Battle.

Portland, Oregon-based Bright.

Physician rating platform Vitals has acquired price transparency service Compass Healthcare Advisers.

Incubator Harvard Launch Lab, a spinout from Harvard's student accelerator, called iLab, announced 12 inaugural companies, two of which are digital health-focused.