CapitalG became the second Alphabet subsidiary to invest in the online trading platform, which more than quadrupled its valuation to $5.6bn.

US-based online trading platform Robinhood has secured $363m in a series D round featuring internet and technology group Alphabet’s CapitalG unit that valued it at $5.6bn, it revealed yesterday.

Investment firm DST Global led the round, which included Iconiq Capital, Sequoia Capital, Kleiner Perkins Caufield and Byers and existing investors including New Enterprise Associates (NEA) and Thrive Capital.

Although not mentioned in the statement Robinhood released announcing the news yesterday, Arrive, the startup funding and services arm of music management…