The regular turnover reached 2.2 million euro ($2.4 million) from 1.7 million euro on Friday.
The 20-share benchmark CROBEX added 0.05% to close at 2,803.49 points, its highest level in at least five years.
The narrower equity index CROBEX10, which tracks the top ten issuers in terms of free float, market capitalisation and liquidity, closed at 1,673.77 points, 0.08% lower than its all-time high set on Friday.
Electrical concern Koncar Elektroindustrija [ZSE:KOEI] was the most traded company with a trade turnover of 471,000 euro. Its shares ended unchanged at 262 euro, after strong gains in the previous two sessions. Earlier on Monday, Koncar announced that its consolidated net profit last year soared 49%.
Shares of ICT equipment producer Ericsson Nikola Tesla fell 2.45% to 199 euro in a turnover of 403,000 euro.
Shares of Zagrebacka Banka appreciated 1.06% to 19 euro in a turnover of 303,000 euro. They are part of the wider equity index.
($ = 0.922 euro)