ENBL stock: 800 shares sale on August 8 - what I did wrong?

 August 29, 2020

Introduction

I am a beginner as a stock investor, I do like to case study my own purchase and sale of ENBL stock 800 shares. ENBL stock price is $5.9 dollars, I sold 800 shares of ENBL with price 5.0, I missed 800 dollars gain. I held over two months. What is wrong? I like to work on a case study. 

Case study

Here is my Ameritrade.com ENBL transaction history. 

I like to get 50 day average from Yahoo -> Finance -> Chart

August 5, 2020

The sale - how to make a sound decision? Two months from June 5 to August 5

Sale date: August 5, 2020 

Open 5.04,

High 5.55

Low 4.98

Close 5.25

Volume 1.54M

% Change 23.82%

Sale: 800 shares, $5.0707

Purchase date: June 5, 2020

Open: 5.52

High: 6.48

Low: 5.46

Close: 6.43

Volume: 3.85M

% Change: 51.65%   <- buy high, chase high price

purchase price: 600 share, $6.2647

Actionable items

I should take time to learn some basics first, and also I should understand market risk.