Warwickshire Police say they were called at around 12.15am on Sunday 13th September to a report of a number of people fighting on Queens Road.
A spokesperson from the force said: "On attendance, officers discovered a man in his 20s with stab wounds to his chest and under his arm. The victim was taken to hospital for treatment where he remains.
"His injuries are not believed to be life threatening or life changing.
"Two other victims, two men in their 20s, sustained minor injuries as a result of this incident.
"The suspects, two white males and one black male, in their 20s, wearing dark clothing, are believed to have made off on foot along Merevale Road towards the town centre."
Investigating officer, Detective Sergeant Paul Sartoris said: “While no arrests have been made, we are pursuing a number of lines of enquiry, and this is currently being treated as an isolated incident with no wider threat to the community.
“I would urge anyone who witnessed the incident or has any information that could assist with the investigation, to please call Warwickshire Police on 101 quoting incident number 12 of 13 September 2020. You can also contact us with information via our website.”