Wednesday extended their impressive start to the new season, keeping another clean sheet in the process, as Fleetwood were beaten 1-0 at Hillsborough.
Lee Gregory scored the decisive goal early in the first half to open his account and secure a second successive victory in four days.
His side showed flashes of brilliance in a contest the hosts largely dominated, although Town did have their moments.
But the Owls kept the Cod Army at bay and remain one of a handful of teams yet to concede this term.
Wednesday forced the pace and went close inside three minutes when the lively Gregory stretched to head a Jack Hunt cross inches over the bar.
Fleetwood were on the ropes through the opening exchanges as Wednesday played some scintillating football, with Barry Bannan at the heart.
The visitors had little joy in the final third and when they did counter through Callum Morton bearing down on goal, the striker was promptly halted in his tracks by Dominic Iorfa.
The Owls pressed forward and were duly rewarded 15 minutes in. Gregory fed Dennis Adeniran down the left of the area and advanced to tuck home himself after Alex Cairns could only parry the midfielder’s shot into his path.
Gregory came within a whisker of doubling his tally 10 minutes later, nodding a Marvin Johnson feed onto the foot of the post as Wednesday turned the screw.
Fleetwood began to see more of the ball and the tempo dropped slightly towards half time given the ferocity of the Owls’ earlier play but still Iorfa had the last word, forcing Cairns into action from a whipped Bannan corner.
Goalscorer Gregory was proving a real thorn in the Fleetwood side and his inviting low cross was sent just the wrong side of the post by Johnson moments after the restart.
Again Gregory threatened, this time on the hour, taking a precision pass from Bannan and drilling narrowly wide on the turn.
Fleetwood recovered once more to haul themselves back into the game but lacked that clinical edge in front of goal, which allowed Wednesday to protect the slender advantage.
Darren Moore made a double substitution, bringing on Florian Kamberi and Callum Paterson, who combined in an instant to almost conjure a second.
Back came Fleetwood but Bailey Peacock-Farrell stayed untroubled to help the Owls collect seven points from the first nine available.
Wednesday: Peacock-Farrell, Hunt, Hutchinson (Dunkley 46), Iorfa, Palmer, Adeniran, Bannan, Wing, Byers (Paterson 72), Johnson, Gregory (Kamberi 72)