Tech startup Rokt said on Monday it raised its valuation to US$2.4 billion in a secondary funding round led by investment firm Square Peg and asset manager Wellington Management, and is planning for an initial public offering encouraged by the e-commerce boom. Growth in e-commerce since the COVID-19 pandemic has led to a demand for marketing software companies such as Rokt. The company uses artificial intelligence and machine learning to analyze online shoppers and their engagement with products and services.