This called a price action trade.
There was a small gap down this morning, a nickel, which was followed by a $1.50 drop in the first 5 minutes. Certainly a panic price movement.
My first buy at $67.11 was set up before the market opened. The additional buy at $66.76 was entered after I felt the selloff was over.
I sold half of this position at $68.24 for 67 cents to reduce my position size because DG broke support at $67.14 which indicates DG could go lower.
Next support levels are $64.90 (minor), $62.50 (minor) and $60.02, which is major support.
DG has been sold to Dollar Tree for $74.50.