---
title: "What's US Fractional Shares Trading?"
description: "A fractional share order of US stocks refers to an order in the US securities market with a trade quantity that includes a decimal. Fractional shares trading typically offers lower costs because you can purchase only the desired amount of stock instead of using extra funds to buy a whole share, thereby lowering the investment threshold and enabling flexible portfolio allocation.1. Stocks eligible for fractional share"
slug: "fractional-shares"
locale: "en"
region: "hk"
region_label: "Hong Kong"
url: "https://longbridge.com/hk/en/support/topics/usmarket/fractional-shares.md"
updated_at: "2026-02-04T02:22:09.000Z"
category: "usmarket"
category_title: "US market"
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---

# What's US Fractional Shares Trading?

[Table of Contents](https://longbridge.com/hk/en/support/toc.md)

A fractional share order of US stocks refers to an order in the US securities market with a trade quantity that includes a decimal. Fractional shares trading typically offers lower costs because you can purchase only the desired amount of stock instead of using extra funds to buy a whole share, thereby lowering the investment threshold and enabling flexible portfolio allocation.

### **1\. Stocks eligible for fractional shares trading**

You can find the stocks that support fractional shares trading under *Market* > *Classify* > *Fractional Shares*. Additionally, the details page for individual stocks supporting fractional shares trading will display a fractional share icon.

![](https://pub.pbkrs.com/uploads/2026/73bc3e6e77f938294842f6e3db255588)

### **2\. Process of fractional shares trading**

Select a US stock that supports fractional shares trading.

-   Enter a decimal number in the *Qty* field (up to 4 decimal places).
-   Enter the desired amount in the *Amount* field. The system will automatically calculate and convert it into the corresponding number of shares based on the current stock price.

![](https://pub.pbkrs.com/uploads/2026/93b7f30ec2a646b19b6f0190ee912e6e)

### **3\. Corporate actions for fractional shares**

Mandatory corporate actions, such as dividends and stock splits, are supported. Other voluntary corporate actions, such as rights issues and offers, are not allowed.

The operation process remains unchanged. For corporate actions involving stock splits or reverse stock splits, you may receive fractional shares. For example, if a stock undergoes a 1-for-10 reverse split and you hold 5 shares before the reverse split, you will receive 0.5 shares after the reverse split.

### **4\. Fees for fractional shares trading in US stocks**

**Type**

**Commission**

**Platform usage fee**

Filled quantity of a single order < 1 share

Free

0.99% × Transaction amount, up to USD 0.99 per order

Filled quantity of a single order ≥ 1 share

Charged according to the charging rules of US stocks

### **FAQs**

Q1: What are the trading hours for US fractional share orders?

Fractional shares trading is only supported during the regular trading hours (ET 09:30–16:00). On early close days, the hours are ET 09:30–13:00.

Q2: What order types are supported for fractional shares trading?

Fractional share orders currently support limit orders and market orders. Conditional orders or grid orders are not yet supported.

Q3: Does fractional shares trading support margin financing and short selling?

Fractional shares cannot be sold short. Fractional shares trading supports unified buying power, and the margin rate is the same as for whole shares.

Q4: Can I modify fractional share orders?

Modifying fractional share orders is currently not supported. To adjust an order, you must first cancel it and then place a new order.

Q5: What is the minimum amount for fractional share orders in the US stock market? 

Fractional share orders must have a minimum transaction amount of USD 1.

**Disclosures**

*This article is for reference only and does not constitute any investment advice.*

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> **Disclaimer**: This article is for reference only and does not constitute any investment advice. Content provided by [Longbridge](https://longbridge.com).