The Dublin market saw more heavy losses today with more than €6 billion already wiped off the value of Irish shares this week.
The steep falls come amid growing fears about the impact of the spread of coronavirus around the world.
The ISEQ index closed 3.8% lower this evening, with shares in the tourism and leisure stocks, as well as the banks, all lower once again.
Ryanair shares regained some losses but was down 2.5%, while ICG was down 2.9% and Dalata Hotel Group shed 6.6%. Meanwhile, AIB slumped 6.9% and Bank of Ireland was down 4.6%.
European stocks also saw further losses by close of trading as a jump in coronavirus cases outside China deepened fears of a looming pandemic that could dent global growth.
Shares in London, Frankfurt and Paris were all down about 3%, while shares on Wall Street were trading lower this evening.
Earlier in Asian trade, Tokyo's Nikkei index slumped 2.1% as investors closely tracked headlines over the coronavirus outbreak. But the Hang Seng index in Hong Kong inched 0.3% higher as the spread of the virus showed signs of easing in China.