Hasher made a good response to you. To supplement: there won't be "an open," in the traditional sense because of the lack of bid/ask. One way to get data is to compare trading of other greys. For instance GVBP is a recent grey that has been trading...
Go to Stockwatch.com (or use anything similar); next to the "quote" field, make sure all checkboxes except "Canada" are clicked on; enter the ticker in the quote field, click on "GO."
You will see the most recent 10 trades, then below a chart, and below a table with useful daily summaries.
For more tickers to check, you can find others here:
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