Putting "nasd" on the trades tab is wrong. GTEH trades on the OTC as you know. And so far as the ? mark goes, that merely means that the trade can't be categorized as either a buy or sell since there isn't a B/A for GTEH since it's on the Expert Market.
Check this ticker's trades. A different situation where the trades that can't be categorized as either a buy or sell are in the ? column because the trade went off between the B/A.