---
title: "100-Day Reading Sharing Plan — Day 73"
type: "Topics"
locale: "en"
url: "https://longbridge.com/en/topics/38892964.md"
description: ""A Random Walk Down Wall Street" 1. Only those who are planning to sell stocks in the near future should be happy when they see stock prices rise. Those who may buy stocks in the future should actually prefer falling stock prices. 2. For the stock market as a whole, Newton's law of universal gravitation has always played out in reverse: what goes down must come back up (though this may not apply to individual stocks). 3. There is a very simple investment strategy known as rebalancing asset class weights within a portfolio. 4. We all wish for a little genie who could reliably tell us how to "buy low and sell high," and the strategy of systematic adjustment of asset weights..."
datetime: "2026-02-25T21:35:57.000Z"
locales:
  - [en](https://longbridge.com/en/topics/38892964.md)
  - [zh-CN](https://longbridge.com/zh-CN/topics/38892964.md)
  - [zh-HK](https://longbridge.com/zh-HK/topics/38892964.md)
author: "[长期主义接班人](https://longbridge.com/en/profiles/16386327.md)"
---

> Supported Languages: [简体中文](https://longbridge.com/zh-CN/topics/38892964.md) | [繁體中文](https://longbridge.com/zh-HK/topics/38892964.md)


# 100-Day Reading Sharing Plan — Day 73

_A Random Walk Down Wall Street_

1\. Only those who are planning to sell stocks in the near future should be happy to see stock prices rise. Those who might buy stocks in the future should really like it when prices fall.

2\. For the stock market as a whole, Newton's law of universal gravitation has always played out in reverse: what goes down must come back up (though this may not apply to individual stocks).

3\. There is a very simple investment strategy known as rebalancing the asset class weights within a portfolio.

4\. We all wish for a little genie who could reliably tell us how to “buy low and sell high,” and a strategy of systematically adjusting asset weights is like having just such a trustworthy genie.

5\. The investment products suitable for you depend largely on your sources of non-investment income.

$Novo Nordisk AS(NVO.US) $Cleveland Cliffs(CLF.US) $Amazon(AMZN.US)

### Related Stocks

- [Novo Nordisk A/S (NVO.US)](https://longbridge.com/en/quote/NVO.US.md)
- [Cleveland-Cliffs Inc. (CLF.US)](https://longbridge.com/en/quote/CLF.US.md)
- [Amazon.com, Inc. (AMZN.US)](https://longbridge.com/en/quote/AMZN.US.md)