Unexpectedly, on Monday around noon, the Italian group UniCredit announced that it had just acquired another 11.5 percent. Commerzbank shares using financial instruments. The announcement noted that the transaction could only be completed after obtaining the necessary approvals, but including the existing stake in the German bank, UniCredit’s total position had increased to about 21 percent. This is much larger than the 12 percent by far the largest shareholder, the German government.