Arabtec Holding PJSC climbed to the highest in a month on investor bets the shares of the Persian Gulf's largest publicly traded builder are cheap compared with Dubai-based real estate developers. The stock gained 3.3 percent to 2.22 dirhams, the highest close since March 3 and trimming this year's drop to 0.9 percent. About 33 million shares traded, or more than double the three-month daily average, according to data compiled by Bloomberg. Arabtec was the second most-actively traded stock on Dubai's benchmark index, which rose 1 percent. The measure has surged 22 percent this year.