The jury sitting at Wolverhampton Crown Court retired to consider their verdict shortly after midday on Thursday, following the trial which has been running around 13 weeks.
Brian Sasa, Nehemie Tampwo, Tyrique King, and Zenay Pennant-Phillips are all accused of murdering the 15-year-old.
Keelan Wilson suffered fatal knife wounds yards from his home in Merry Hill, Wolverhampton, on May 29, 2018.
Sasa, of Long Ley, Heath Town; Tampwo, from Fern Grove, Bletchley; King, of Chelwood Gardens, Bilston; and Pennant-Phillips, whose home address cannot be made public, have all denied murdering Keelan Wilson.
The jury were sent home for the day on Thursday afternoon and will continue their deliberations on Friday morning.