Tesla (TSLA) stock has lost more than 15% so far in October, and has turned negative for the year with a loss of more than 12%. The company had three key events lined up for this month: the Q3 delivery report, the “We, Robot” product launch event, and its Q3 earnings report – only the last of which is still remaining on the docket. Tesla’s Q3 deliveries failed to impress; while they rose YoY for the first time this year, the number still fell short of Street estimates. The “We, Robot” robotaxi event – on which a lot was riding – was an even bigger letdown. There was a lack of concrete timeline…