Financial investors Advent and Centerbridge have failed in their proposed takeover of Germany-based Aareal Bank. The investors failed to secure 60% of the shares in the bank, according to their special purpose entity Atlantic BidCo late on Friday, after European markets closed. That means the offer is revoked. Trading platform Tradegate showed shares in Aareal falling by about 9.1% compared to its price at the end of the trading day. The suitors had raised their bid price to €31 ($35), from a previous offer of €29 per share, under pressure from investors and had also lowered their required lev…