The TSX CBBO feed disseminates market data from each market place during their regular trading session. The bid/ask data that is published in the TSX CBBO feed are *not* necessarily representative of the the consolidated best bid/offer outside of regular market hours.
Expected behavior for CBBO is as follows (all times are Eastern Time):
06:10 TSX/ALP/CSE OrderBook messages - should show a best bid and offer
06:30 (approx.) all sources are disabled - all prices revert to 0.000 x 0.000
Market open: as source is enabled (and as/when pre-market orders come through from the venue - best bid and offer prices are reflected in CBBO)
4:00 TSX Sources are once again disabled causing prices to revert back to 0.000 x 0.000
Note: No Bid/Ask data is available in Level 1 for Alpha, Chi-X, CX2 market data (xx:APH, xx:CHI, xx:CX2) as it requires access to Level 2 data which QuoteMedia does not carry at this time.