MicroSectors Travel 3x Leveraged ETN Sees Volume Plunge Shares of MicroSectors Travel 3x Leveraged ETN (FLYU) dropped 0.9% on Thursday, closing at $40.51. Trading volume fell sharply, with only 446 shares exchanged, down 80% from its average. The fund, tracking U.S. travel companies, has faced pressure amid broader market concerns.1