Never mind Buffet or anyone else, just look at the monthly chart.. #DAL is above a strong support, if it breaks down, big crash will come.. Just watch carefully.. Beside, as I said before; 'Due to the pandemic disaster we are experiencing, the air transportation industry has been in a very difficult situation.. The cash flows of the airline companies are seriously disrupted and this situation seems to continue for a while, in this context, we can see much lower levels in the stock price..'
Disclaimer: Please do your own due diligence when it comes to trading.. Invest at your own risk..
I wish you all the best..