Arrive, the investment and startup services unit formed by music management firm Roc Nation, provided an undisclosed amount of funding for Robinhood, the US-based creator of a fee-free online brokerage, on Tuesday. Robinhood had previously raised $176m from investors including GV, a subsidiary of internet technology group Alphabet, DST Global, Greenoaks Capital, Index Ventures, Andreessen Horowitz, Rothenberg Ventures, New Enterprise Associates, Ribbit Capital, Thrive Capital, Queensbridge Venture Partners, Social Leverage and Vaizra Investments.

Communication network technology producer Carnegie Technologies led…