Brigade Enterprises shares appeared to plunge 22% on Wednesday after adjusting for its 1:3 bonus issue, but the decline was purely technical and did not erode shareholder value. After opening at the adjusted price of Rs 559.70 against the previous close of Rs 720.25, the stock rallied about 10% to an intraday high of Rs 595.95. The company had announced its first bonus issue in nearly seven years, granting one bonus share for every three shares held as of the June 17 record date.