No trades occur. No theoretical market data is disseminated. During this phase, orders can not be entered or modified but can be deleted. The initial matching procedure is performed by batch trading and the sell and purchase offers entered during the opening phase are automatically matched as transactions. Non-matched orders are directly transferred to continuous trading.
Trades continuously occur as orders match.
Evening Trading 18.03 - 21.00 Orders can be entered, modified, and deleted. Trades continuously occur as orders match, with trading finishing at 21.00. There is no maximum order size on the Helsinki Exchange. The Helsinki Exchange reviews Round Lot Sizes on an ad hoc basis. Odd Lot Trading Currently Instinet only supports Round Lot Orders.