TSLA saw a dramatic increase following the implementation of its stock split Monday. This led to new highs, and especially a new resistance at the 500 level. However, new support was also found at the 460 and 470 levels, indicating a good buy zone. I've also charted a potential bull flag on this 15 min chart, suggesting a possible breakout. Battery Day is the 22nd, and after today's drop due to the offering of 5bn shares, long Sept/Oct calls look great.