Semperit AG Holding (Semperit) shares soared in value today (Tues).As of 2pm, one stock in the rubber and synthetics industry company was traded at 40.81 Euros, up by 1.56 per cent. Semperit is based in Vienna and part of the German Continental AG group, a leading producer of tyres.Vienna-based fireproof products maker RHI AG also performed strongly on the Vienna Stock Exchange (WBAG) today. One stock in the Viennese firm was worth 25.42 Euros, up from 25.1 Euros at 11am yesterday. RHI achieved a turnover of 1.523 billion Euros last year.Erste Group Bank AG (Erste Bank) meanwhile suffered a slight setback as the value of one share dropped by 1.01 per cent to 35.63 Euros.Raiffeisen Bank International AG (RBI) which manages the international operations of Erste Bank competitor Raiffeisenzentralbank (RZB) also struggled on the WBAG. One RBI share was worth 40.79 Euros at 2pm, down by 0.39 per cent.