---
title: "J-Star Holding (YMAT) Stock Surges Over 50% After Hours: Why Is It Moving?"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/288535693.md"
description: "J-Star Holding (YMAT) shares surged over 50% in after-hours trading following announcements of key milestones for its $122.5 million solid-state battery facility in Texas. The company secured regulatory authorization for $60 million in financing and reserved a site in Baytown, meeting DOE requirements. Despite these developments, the stock remains near its 52-week low, having dropped nearly 78% over the past year."
datetime: "2026-06-03T07:11:01.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/288535693.md)
  - [en](https://longbridge.com/en/news/288535693.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/288535693.md)
---

# J-Star Holding (YMAT) Stock Surges Over 50% After Hours: Why Is It Moving?

**J-Star Holding Co., Ltd.** (NASDAQ:YMAT) shares jumped 50.54% to $1.37 in after-hours trading after the company disclosed two foundational milestones for its proposed $122.5 million solid-state battery manufacturing facility in Baytown, Texas.

## Regulatory Green Light Fuels Post-Market Rally

According to the company’s Tuesday announcement, subsidiary **YMA Corporation** received authorization from Taiwan’s Central Bank on May 26 to pursue $60 million in financing through Taiwanese institutions, a key regulatory step filed in a **Securities and Exchange Commission** filing.

On Apr. 14, the Baytown West Chambers County Economic Development Foundation secured an 18-month exclusive site reservation within TGS Cedar Port Industrial Park, one of the largest master-planned rail- and barge-served industrial parks in the U.S., meeting DOE Site Control requirements. Infrastructure pledges include a 12,000 sq. ft. ISO-7 Ultra-Dry Room and 4,000-amp electrical service.

The company’s DOE IIJA Section 40207 battery manufacturing grant application remains “In Review.” No funding has been awarded.

CEO **Jonathan Chiang** called the developments “meaningful progress” in advancing plans for a U.S.-based solid-state battery manufacturing operation.

## Trading Metrics, Technical Analysis

J-Star Holding, a Taiwan-based manufacturer of carbon fiber composite products, has a market capitalization of $18.24 million. The stock has traded between a 52-week high of $6.45 and a 52-week low of $0.24.

The stock has a Relative Strength Index (RSI) of 52.04.

Over the past 12 months, YMAT has dropped 77.7%.

The small-cap stock is currently trading near its annual low.

**Price Action:** According to Benzinga Pro data, the stock closed the regular session at $0.91, down 8.04%.

**Benzinga's Edge Stock Rankings** indicate that YMAT is experiencing long-term consolidation along with short and medium-term upward movement.

_Photo Courtesy: Vintage Tone on Shutterstock.com_

**Disclaimer:** This content was partially produced with the help of AI tools and was reviewed and published by Benzinga editors.

**Read Also: BlackBerry Stock Trends, Hovers Near 52-Week High After Hours: What's Going On?**

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