Shares of advertising software technology vendor DoubleVerify (NYSE: DV) shot up 14% this week, according to data provided by S&P Global Market Intelligence. The company made its public debut earlier in the year and the stock has been volatile since the IPO. Nevertheless, DoubleVerify has been trending back up as of late since reporting a new partnership with TikTok late in September. The partnership will help measure video viewability and screen out invalid traffic for advertisers.