---
type: "Topics"
locale: "en"
url: "https://longbridge.com/en/topics/39464224.md"
description: "$Tesla(TSLA.US) I have a question. I have a little over 46 odd lots, with a cost basis of 432. Today, I sold 20 shares at 384 and bought them back at 383. In theory, after T-ing $20 and deducting fees, I should still have a profit. But when I took a screenshot at a certain point, I noticed the stock had gained 3.27%, but my daily P&L was only 2.11%? That's weird. Shouldn't my daily P&L be > 3.27%? In the past, when the price was falling, I'd sell first and then buy back. If the stock fell 3% that day, my daily P&L was always less than -3%??? What does this mean, experts? Please enlighten me."
datetime: "2026-03-23T16:48:08.000Z"
locales:
  - [en](https://longbridge.com/en/topics/39464224.md)
  - [zh-CN](https://longbridge.com/zh-CN/topics/39464224.md)
  - [zh-HK](https://longbridge.com/zh-HK/topics/39464224.md)
author: "[努力躺平的牛牛](https://longbridge.com/en/profiles/23096098.md)"
---

# $Tesla(TSLA.US) I have a question. I have a little…


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- [TSLA.US](https://longbridge.com/en/quote/TSLA.US.md)

## Comments (3)

- **脆皮大学牲 · 2026-03-23T17:27:05.000Z**: Daily profit and loss is calculated from the night market, while stock price changes are based on yesterday's closing price.
  - **脆皮大学牲** (2026-03-23T17:27:56.000Z): However, this depends on what benchmark you set for your daily profit and loss. Some are based on yesterday's closing price, and some are based on the night market.
  - **努力躺平的牛牛** (2026-03-24T01:03:21.000Z): Is that so? Thanks, boss.