CMU-founded language learning platform developer Duolingo has now raised $183m altogether and has increased its valuation 60% to $2.4bn.
The anti-malware software provider's series E round has valued the UC Berkeley spinout at $800m.
Midea participated in a round for the speech processing technology provider, whose backers also include Tsinghua University's TusPark Ventures.
Bill Gates has returned to lead an $85m round for satellite internet provider Kymeta, which has now raised more than $280m since it was set up to advance Duke University research.
The plant-based food producer boosted its valuation to $4bn and has now raised $1.5bn since being founded by Stanford faculty in 2011.
UC Berkeley’s SiFive has raised $61m in series E funding from a consortium featuring OUP, SK Hynix, Western Digital, Qualcomm and Intel.
Seek Group returned for a series F round that boosted the Stanford faculty-founded adult education provider's valuation to $2.5bn.
Existing backer GV returned to take part in a $100m round for the Stanford spinout that also attracted new investor Regeneron Pharmaceuticals.