The two Artemis teams hold down second and third respectively, with Terry Hutchinson leading his stable-mate Nathan Outteridge by two points.
Jimmy Spithill's Oracle team have slipped to fourth after a quiet afternoon on the water, recording a sixth and a fifth.
In the match-racing quarter-finals earlier in the day, Outteridge in Artemis Red scored a surprise win over Russell Coutts after a confusing finish to the race.
Coutts appeared to have won convincingly, but was later ruled a DNF by the principal race officer after rounding the wrong mark on his way to the finish line.
Outteridge will face Team New Zealand in tomorrow's semifinal, after Dean Barker's crew won their way through to the final four in the first round of quarter-finals yesterday.
Hutchinson, in Artemis White, will face off against Spithill in the other semifinal. The No 1 Oracle team edged Ben Ainslie by just eight seconds in a highly-competitive second quarter-final of the day.
Tomorrow's action will open with the semifinals of the match-racing, with the final to be held later in the day following two further fleet races.