Real estate company Simon Property Group led the round, which raised SmarterHQ's overall combined equity and debt financing to more than $24m.

Natural language processing startup DataFox raises $5m in series A backed by Stanford-Start X fund.

Unilever spin-out Voltea, a developer of water desalination technology, raised the funding in a round also featuring industrial products maker Pentair.

Eletranova Capital, which is backed by EDF and Allianz, is among the investors in a series C round for the water treatment technology developer that so far stands at $9.1m.

IDG Ventures led the online survey company's series A round, which also included a contribution from another corporate venturing fund, Bloomberg Beta.

Retail chain Luolai led the sleep monitoring device maker's series B round, which also featured funding from e-commerce company JD.com.

Pain management company Axial has now raised almost $10m in less than a year from backers including insurer BlueCross BlueShield.

The medical device producer has now raised $40m in financing altogether, having secured $4m in a Novo-backed equity round and $4m in debt from GE Capital.