No 'they' as in the TSX exchange. Sometimes when there is big news that might be traumatic to the share price, whether good or bad, the major exchanges halt trading for a time to let the dust settle and keep an orderly market. This is also done in the USA on both American and NYSE from time to time. The rumor about the private placement must have started leaking so the exchange halted trading for about an hour, and the period was before and after the official announcement. It keeps the day traders from exacerbating stock price movements. What you have to worry about is being locked in or locked out depending on circumstances.
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