Tesla Inc (TSLA) released its second-quarter results late yesterday showing much lower profits. This has led to unusual activity in its call options today with heavy volume. It shows that some investors are bullish, buying calls. What could be moving these investors? TSLA stock is down over $25 to $221.55, a drop of over 10% in mid-day trading. Nevertheless, large tranches of TSLA calls expiring in 2 days have been trading. This can be seen in today’s Barchart Unusual Stock Options Activity Report. It shows that 3 tranches of TSLA calls, all out-of-the-money (OTM), have traded for expiration o…