Bilyonaryo Henry Sy?s BDO Unibank Inc. is seen maintaining the tag as the country?s largest bank in terms of assets with P1.88 trillion. Likewise, Bilyonaryo Lucio Tan?s Philippine National Bank (PNB) is expected to retain fifth spot with P607.45 billion. Security Bank Corp. of Bilyonaryo Frederick Dy is expected to keep its sixth spot with P483.02 billion. It recently entered into a P37 billion deal with the Bank of Tokyo Mitsubishi UFJ Ltd in exchange for a 20 percent stake.