OP Bancorp (OPBK) Upgraded to Strong Buy: What Does It Mean for the Stock? Posted byZacks Equity Research December 29, 2021 Leave a comment on OP Bancorp (OPBK) Upgraded to Strong Buy: What Does It Mean for the Stock? OP Bancorp (OPBK) might move higher on growing optimism about its earnings prospects, which is reflected by its upgrade to a Zacks Rank #1 (Strong Buy).