The $21.9m in funding will enable Red Balloon Security, based on research at Columbia University, to increase its business operations.

The $21.9m in funding, provided by backers including American Family Ventures, will enable Red Balloon Security to increase its business operations.

Nantero has attracted $29.7m in funding from a consortium that included Dell, Cisco, Kingston and Schlumberger as well as three unnamed semiconductor companies.

BridgeBio Pharma participated in a series B round for its subsidiary Eidos Therapeutics, which is working on treatments for a family of rare genetic diseases known as ATTR.

Following an initial $200m close two months ago, the Amazon, Amex and Comcast-backed grocery delivery company has added $150m to its series E round.

Optum has led a series A round for LetsGetChecked, which enables users to take medical tests at home.

Reflexion Medical, partially based on research at UChicago, secured the Rise Fund as lead investor, with Pfizer and Johnson & Johnson returning.