I have provided here an example of a bonus issue of shares which has resulted in the reduction of a company's stock price:

Bank of Nova Scotia (BNS) on the Jamaican Stock Exchange ended trading on Monday, March 7, 2005 at $62.50. However after a 1:1 bonus issue on the same day, it began trading at $31.25 the following day Tuesday, March 8, 2005 and closed at $33.50, an increase of $2.25.