The story
Surabaya Stock Exchange was originally opened in 1925 during the Dutch colonial era, but it was closed in early 1939 due to the ongoing World War II. On 16 June 1989, the exchange restarted the operation.
On 22 July 1995, the SSX merged with the Indonesian Parallel Stock Exchange (IPSX), leaving only two primary exchanges operating in Indonesia.
On 30 October 2007, SSX was officially merged to Jakarta Stock Exchange (JSX) and becoming Indonesia Stock Exchange (IDX) as a single exchange operating in Indonesia, besides Jakarta Futures Exchange.
From Wikipedia’s article on Surabaya Stock Exchange, shared under CC BY-SA 4.0.3