Holmberg, who entered the game with three goals and three assists in 11 games this season, had one goal and three assists.
Anthony Cirelli and Brandon Hagel each had a goal and two assists for the Lightning (8-3-1), who are undefeated at home this season (6-0-0). Andrei Vasilevskiy made 17 saves.
Neal Pionk scored twice, Kyle Connor and Dylan Samberg each had a goal and an assist, and Mark Scheifele had three assists for the Jets (4-6-3), who are 0-5-2 in their past seven. Cole Perfetti had two assists.
Stuart Skinner allowed five goals on 21 shots before he was replaced by Nico Daws to begin the third period. Daws made nine saves in his Jets debut.
The 25-year-old goalie was acquired in a trade with the New Jersey Devils on Oct. 23 along with forwards Dawson Mercer and Nick Bjugstad, the rights to unsigned draft choice Alexander Command, the Devils’ own second-round pick in the 2029 NHL Draft and their seventh-round selection in the 2027 NHL Draft in exchange for goalie Connor Hellebuyck.
Brayden Point gave Tampa Bay a 1-0 lead at 2:20 of the first period, scoring with a shot above the hashmarks off a pass from Nikita Kucherov.
Pionk tied it 1-1 at 17:45 after he collected a feed from Perfetti and beat Vasilevskiy with a slap shot from the blue line.
Conor Geekie put the Lightning ahead 2-1 at 9:43 of the second period with a chip-in from close range to finish a 2-on-1 rush with Dominic James providing the pass.
Cirelli extended the lead to 3-1 with a power-play goal at 15:56, beating Haydn Fleury to the blue paint to score after Gage Goncalves sent the puck to the net.
John Carlson pushed it to 4-1 at 18:07, scoring with a one-timer from the left face-off circle off a pass from Holmberg.
Hagel lifted a Cirelli feed from in front at 19:03 to make it 5-1.
Samberg made it 5-2 at 7:00 of the third period, scoring with a one-handed tip from the low slot off a pass from Perfetti.
Pionk's second goal of the game cut the deficit to 5-3 when he put home a cross-ice feed from Mercer at 8:50. The assist was Mercer's first point with Winnipeg.
Winnipeg appeared to make it 5-4 at 15:38, but Jets forward Adam Lowry caused the net to be displaced from its moorings prior to the puck crossing the goal line.
Connor did bring Winnipeg to within 5-4 at 17:12 with a wrist shot from the right circle that beat Vasilevskiy on the short side.
Holmberg scored an empty-net goal at 18:29 for the 6-4 final.
