The trades were revealed just as Wall Street’s runaway technology-led rally was faltering. In August, SoftBank Chief Executive Masayoshi Son had announced a new investment management subsidiary that would park excess cash from a massive asset sale program in liquid stocks. In total, SoftBank injected roughly $4 billion building up stakes in Inc , Netflix Inc , Tesla Inc , Microsoft Corp and Alphabet Inc , according to regulatory filings.

SoftBank option purchases raise eyebrows as Wall Street backtracks