The Most Valuable Skill in Investing: Self-Control
This post is an English adaptation of a Chinese WeChat article. Original source: https://mp.weixin.qq.com/s/eA0I3fi8VGpC6lg-me-66w ...
Investing
Why Do Prices Drop After You Buy and Rise After You Sell?
This post is an English adaptation of a Chinese WeChat article. Original source: https://mp.weixin.qq.com/s/7sRF5tNqPLgabkAp5KGfwQ ...
Cost Basis Pitfall: Sold Above Cost, Still Lost Money
A real trade, an unexpected loss, and a hard lesson on cost basis. On Feb 3, 2026, I sold part of a position I had held for months in an “xxx Gas ETF”. The cost shown on my holdings page was about RMB 0.84, while the market price was around RMB 0.933. It looked like the price was clearly above cost, so I assumed any sale would be a profit. But after selling 1,800 shares at RMB 0.932, the trade record showed a loss. This post records the full path from “that makes no sense” to “I understand the cost basis” so you do not repeat the same mistake. ...