---
type: "Topics"
locale: "zh-CN"
url: "https://longbridge.com/zh-CN/topics/38710804.md"
description: "This wave of Duolingo's $Duolingo(DUOL.US) decline gave me a particularly good lesson. I need to write this lesson down and remember it firmly.1. Investment itself must be highly consistent with the investor. I cannot accept such high volatility, so next time I must avoid situations where I think I can profit from volatility. It makes me uneasy, I cannot bear it, so whether I make or lose money, I should not touch it again.2. Peter Lynch said ten thousand times not to catch a falling knife. Why do you think this knife has stabilized when the P/E ratio reaches 16? Now at P/E 12 it's not stable either. I need to clearly feel the sensation of the knife landing in my hand. I must always remember this taste of pain.3. Charlie Munger said, "Buy great stocks at a fair price." What is great? What is fair? I'll have to figure that out slowly."
datetime: "2026-02-13T00:29:17.000Z"
locales:
  - [en](https://longbridge.com/en/topics/38710804.md)
  - [zh-CN](https://longbridge.com/zh-CN/topics/38710804.md)
  - [zh-HK](https://longbridge.com/zh-HK/topics/38710804.md)
author: "[妙7](https://longbridge.com/zh-CN/profiles/13848559.md)"
---

> 支持的语言: [English](https://longbridge.com/en/topics/38710804.md) | [繁體中文](https://longbridge.com/zh-HK/topics/38710804.md)


# This wave of Duolingo's $Duolingo(DUOL.US) decline…


### 相关股票

- [Duolingo (DUOL.US)](https://longbridge.com/zh-CN/quote/DUOL.US.md)

## 评论 (4)

- **雪色泪影 · 2026-02-13T12:58:15.000Z · 👍 1**: Since I stopped learning English, Duolingo has started to plummet.
  - **妙7** (2026-02-13T23:30:55.000Z): Haha, you should learn it quickly.
- **Flora3y · 2026-02-13T03:13:29.000Z**: You can try shorting it.
  - **妙7** (2026-02-13T09:37:39.000Z): I'll just take the common stock then.