Market Manipulation Investigation Casts Shadow Over UniCredit’s 40% Commerzbank Stake

Commerzbank shares trade above UniCredit's €37.73 bid as Frankfurt prosecutors investigate possible disclosure violations; political resistance and regulatory hurdles mount.

Commerzbank’s stock has proven remarkably resilient, holding near its 52-week high of €38.25 even as a market-manipulation probe complicates UniCredit’s steady accumulation of equity. The Italian lender now controls an estimated 38% to 39% of the German bank after its exchange offer closed on Wednesday, though some calculations, including derivative positions, push the figure above 42%. The gap between the two estimates reflects the opacity of UniCredit’s strategy and the escalating legal scrutiny surrounding it.

Frankfurt prosecutors have launched preliminary investigations into whether UniCredit misled the financial regulator BaFin about its true intentions when building the stake. The probe centres on whether the Italian bank correctly disclosed the purpose of its share lending and derivative activities. UniCredit has denied any wrongdoing, noting it voluntarily presented the relevant facts to BaFin. Commerzbank, however, flagged what it described as unusual tendering patterns, reporting that almost no retail investors participated in the exchange offer, and that institutional participation was also scarce. The bank is feeding fresh findings to the authorities on a rolling basis.

The tender itself saw investors hand over roughly 12% of Commerzbank’s capital at an exchange ratio of 0.485 UniCredit shares per Commerzbank share, valuing the bid at about €37.73. That is below the current trading price of €38.17, a clear signal that the market expects a higher offer or a standalone future. Commerzbank’s stock closed at €37.84 on Wednesday and has gained 34.5% over the past twelve months, powered by robust operational momentum. Chief Executive Bettina Orlopp has publicly committed to strict efficiency and generous shareholder returns, reinforcing the case for independence.

Political resistance in Berlin remains stiff. The German government still holds a 12% stake and has flatly rejected any sale to UniCredit. That stance, combined with the legal cloud, gives the standalone argument more weight. Yet UniCredit’s chief Andrea Orcel is clearly intent on securing de facto control just below the 50% threshold, thereby avoiding a full mandatory offer while still gaining the ability to shape the board.

The next milestones come swiftly. UniCredit is due to publish the preliminary result of the first exchange phase on June 19, followed by an additional acceptance period running from June 20 to July 3 on identical terms. The final outcome hinges increasingly on whether the prosecution’s probe delays or derails regulatory clearance from the European Central Bank or BaFin.

For now, Commerzbank’s shares trade above the bid price with a relative-strength index near 63, edging toward overbought territory. The stock’s near-36% annual gain speaks to strong fundamentals, but the headline risks from both Berlin and the Frankfurt prosecutor’s office make this a high-stakes bet. A failure of the takeover fantasy could trigger a sharp retreat, while an improved offer might break the deadlock. The market is pricing in neither outcome with conviction.