Positive signals emanating from the US-Iran talks had its reflection on the Qatar Stock Exchange, which Wednesday gained more than 26 points and with capitalisation adding in excess of QR2bn.The insurance, transport, industry, banks and real estate counters witnessed higher than average demand as the 20-stock Qatar Index rose by 0.23% to 11,389.02 points, recovering from an intraday low of 11,324 points.The foreign institutions were increasingly net buyers in the main bourse, whose capitalisation added QR2.35bn or 0.35% to QR679.1bn mainly on small and microcap segments.The Gulf funds turned bullish in the main market, whose trade turnover and volumes were on the rise.The domestic institutions’ weakened net profit booking had its influence on the main market, which saw as many as 3,484 exchange traded funds (sponsored by AlRayan Bank and Doha Bank) valued at QR0.03mn trade across eight deals.However, the local retail investors were seen net sellers in the main bourse, which saw no trading of sovereign bonds.The Islamic index was seen gaining slower than the other indices of the main market, which saw no trading of treasury bills.The Total Return Index rose 0.39%, the All Share Index by 0.49% and the All Islamic Index by 0.02% in the main bourse.The insurance sector index shot up 3.89%, transport (1.34%), industrials (0.66%), banks and financial services (0.48%) and realty (0.3%); while telecom declined 1.47% and consumer goods and services 0.48%.As many as 31 gained, while 18 declined and five were unchanged.More than 57% of the traded constituents extended gains with major movers in the main market being Qatar Insurance, Nakilat, Mesaieed Petrochemical Holding, Al Khaleej Takaful, Commercial Bank, AlRayan Bank, Inma Holding, Qamco and Mazaya Qatar.Nevertheless, Medicare Group, Milaha, Widam Food, Ooredoo, Mannai Corporation and Vodafone Qatar were among the shakers in the main bourse.In the venture market, Techno Q saw its shared depreciate in value.The foreign institutions’ net buying increased substantially to QR38.47mn against QR16.05mn the previous day.The Gulf funds turned net buyers to the tune of QR18.53mn compared with net sellers of QR6.93mn on February 17.The domestic institutions’ net selling declined perceptibly to QR2.14mn against QR10.04mn on Tuesday.However, the local retail investors were net sellers to the extent of QR50.18mn compared with net buyers of QR0.59mn the previous day.The Gulf individuals turned net sellers to the tune of QR2.25mn against net buyers of QR0.05mn on February 17.The foreign individual investors’ net profit booking grew marginally to QR1.75mn compared to QR1.37mn on Tuesday.The Arab retail investors were net sellers to the extent of QR0.69mn against net buyers of QR1.66mn the previous day.The Arab institutions had no major net exposure for the second straight session.The main market saw a 16% jump in trade volumes at 133.57mn shares, 5% in value to QR397.14mn and 12% in deals to 24,902.In the venture market, a total of 0.02mn equities valued at QR0.04mn changed hands across 10 transactions.