Main indices of Kuwait Stock Exchange (KSE) settled in the red zone upon closing Tuesday's session, with the benchmark drastically falling reaching the level of 6,170, shedding 131.1 points. Weighted index lost 9.42 points and Kuwait-15 index fell by 28.02 points. Volume of traded shares reached KD 21.4 million, volume turnover some 149.1 million, done in 4,258 deals.