shares of videogame platform roblox corp jumped 15 after the company released key metrics for september daily active users on the companys platform came in at 578 million up 23 from a year earlier but down from the 599 million users reported for august the company said roblox reported 4 billion hours engaged for september up 16 from a year earlier but down from 47 billion reported in august the return to school from summer vacation may have driven some of the monthovermonth declines estimated bookings for the month came in between 212 million and 219 million up 11 to 15 from a year earlier the company said the strong us dollar lowered the yearoveryear growth in bookings for september by about 6 matthew thornton an analyst at truist said september bookings came in ahead of the consensus estimate of sellside analysts shares of roblox rose 15 to 4086 in morning trading so far this year the stock is down almost 61 write to will feuer at willfeuerwsjcom