ServiceNow's CEO is one of the first software execs buying shares in their own companies in the wake of the SaaS sell-off.Given that technology stocks have been fueling the stock market's gains for the past several years, you might find it surprising that one of the most beaten-up groups of stocks lately is part of the tech sector. The artificial intelligence (AI) tide has not lifted all boats, and the software-as-a-service (SaaS) space has been battered over the past year due to rising concerns that AI sys ...