UniCredit boosts its stake in Commerzbank, applies to own up to 29.9% of the German bank CNBCEurope’s Banks Are Takeover Targets. How to Invest. Barron’sUniCredit Raises Commerzbank Stake to 21% Amid Berlin Opposition BloombergCommerzbank, UniCredit shares fall as Germany plans to keep 12% stake Yahoo FinanceUniCredit lifts stake in Commerzbank to 21 per cent Financial Times