The ISEQ index of Irish shares ended the day at 3,369.89 points, a drop of 84.89 or 2.46%.
Banking stocks were among the fallers, with AIB down 11c to €3.19 and Bank of Ireland shedding 18c to €3.07. Irish Life & Permanent meanwhile fell 5c to €5.20.
Also among the fallers were CRH, down 65c to €20.05; DCC, falling 43c to €17.77; Kingspan, 30c down to €6.60; Grafton Group, 21c off at €3.75; Tullow Oil, down 20c to €12.70; C&C, 17c off at €3.03, and Smurfit Kappa, down 13c to €5.51.
On the risers' board, Paddy Power jumped 62c to €21.52, Glanbia added 12c to €2.66 and FBD lifted 7c to €7.96.