0002128739 2026-11-09 2026-11-09 0002128739 ATLQ:UnitsEachConsistingOfOneClassOrdinaryShareOneRedeemableWarrantAndOneRightToReceiveOnefourth14Member 2026-11-09 2026-11-09 0002128739 ATLQ:ClassOrdinarySharesParValue0.0001PerShareMember 2026-11-09 2026-11-09 0002128739 ATLQ:WarrantsEachWarrantExercisableForOneClassOrdinaryShareMember 2026-11-09 2026-11-09 0002128739 ATLQ:RightsToReceiveOnefourthThOfOneClassOrdinaryShareMember 2026-11-09 2026-11-09 false --12-31 0002128739 8-K 2026-11-09 Atlantic Acquisition Corp I E9 001-43341 41-2462795 270 Sylvan Avenue Suite 2230 Englewood Cliffs NJ 07632 201 899-4470 JAB Acquisition Corp I false false false false Units, each consisting of one Class A ordinary share, one redeemable warrant and one right to receive one-fourth (1/4 ATLQU NASDAQ Class A ordinary shares, par value $0.0001 per share ATLQ NASDAQ Warrants, each warrant exercisable for one Class A ordinary share ATLQW NASDAQ Rights to receive one-fourth (¼th) of one Class A ordinary share ATLQR NASDAQ true false