Most shares across all sectors declined at the first day of the week in Kuwait, with KSE Market Index ending off 1.73% at 6,320.6 points. Banks and insurers posted heavy losses in particular. Industry bellwether National Bank of Kuwait (NBK) weakened by 3.5% and finished at KD1.1. Kuwait International Bank bucked the downtrend and advanced 1.06%, ending at KD0.190. Jazeera Airways declined 1.88% and finished at KD0.104. According to data from Kuwait's Directorate General for Civil Aviation (DGCA), Jazeera under its CEO Stefan Pichler gained a leading market share in May 2010 among Kuwait-based airlines on the most competitive routes served from Kuwait, including routes to Amman, Bahrain, Beirut, Damascus, Dubai, Luxor, and Sharm El Sheikh. The carrier had closed the month with a market share of 31% on the Kuwait-Beirut route, 49% to Sharm El Sheikh, 19% to Dubai, 20% to Bahrain, 34% to Amman, 46% to Damascus, and 55% to Luxor. On a year-to-date basis Jazeera shares lost 45.26%.