Stealth-stage SpinLaunch, which is developing a kinetic energy-based space launch system, raised the cash from investors including Airbus and Alphabet.

The radiation therapy system provider has now raised more than $500m altogether, having received funding from backers including Henan Maisheng.

Rocket Internet remains the largest investor in the home products marketplace, which has floated in a $174m initial public offering.

Life insurance platform Ethos has emerged from stealth with backing from investors including Roc Nation as it looks to drive business growth and product development.

Best Buy-backed biometric sensor developer Valencell has secured a series E round led by Sonion, while existing shareholders such as Gii returned.

WME has contributed to a $12m series B round for Influential, which has now raised $26.5m.

Optum Ventures-backed Mindstrong Health has raised its series B capital from a consortium that also included new backers Bezos Expeditions and Decheng Capital.

SoftBank Capital has provided follow-on funding to Reonomy, having previously backed a $3.8m series A and a $13m series B round.

M17 Entertainment, backed by MCN, Yahoo Japan and LeSports, rang the opening bell on NYSE last week but never began trading.