The VN-Index suffered its biggest drop in six weeks on Tuesday, giving up almost one percent, amid a broad sell-off of blue chip names. VCB (-2.1%), GAS (-2.6%), VIC (-2.1%) and VNM (-0.3%) - four of the market's five largest companies by market capitalization - led laggards. VJC (+20%) soared to its trading ceiling on its first day of trading. The airline will be included in the VN-Index starting tomorrow.