New York, June 3, 2026, 08:05 EDT
J-Star Holding Co. traded at $1.36 at 7:49 a.m. in New York after finishing at $0.91 on Tuesday. Traders responded to new details about its planned solid-state battery plant in Baytown, Texas. Benzinga said the stock climbed nearly 50% to $1.37 in after-hours trading after its regular-session drop.
J-Star climbed back above the Nasdaq’s $1 mark before the open, putting the thinly traded, recently listed name over the minimum right before a shareholder meeting where the company will seek approval for a share consolidation. The move comes less than a week before the vote. A share consolidation, or reverse split, cuts the number of shares and often pushes the price higher per share. J-Star said this is aimed at regaining compliance with the Nasdaq $1 minimum bid-price rule.
Stocks were trading before the opening bell — buying and selling during premarket hours. Nasdaq’s main session goes from 9:30 a.m. to 4 p.m. Eastern, while premarket is 4 a.m. to 9:30 a.m.; the 2026 holiday schedule doesn’t list June 3 as a market holiday. Nasdaq also cautions that trading outside regular hours carries more volatility and less liquidity.
J-Star on Tuesday pointed to two key steps for its planned $122.5 million Baytown plant: approval from Taiwan’s Central Bank for a proposed $60 million outbound investment, and a site agreement with the Baytown West Chambers County Economic Development Foundation. The company added that its application for a U.S. Department of Energy battery manufacturing grant is still being reviewed, with no decision on funding yet. CEO and Chairman Jonathan Chiang called these “meaningful progress.” GlobeNewswire
J-Star said on May 26 that its subsidiary YMA Corporation got formal signoff from Taiwan’s central bank to go after a U.S. dollar loan through approved Taiwanese banks. The funding is for a 100 MWh solid-state battery line in Baytown. MWh, megawatt-hour, is the metric for battery energy or plant scale.
The Baytown site plan is still in early stages. J-Star said in its letter of intent — an LOI, which is not a final contract — that it listed several five-acre industrial parcels, called for a 12,000-square-foot ISO-7 Ultra-Dry Room, and about 4,000-amp electrical service. The LOI also set an 18-month site-availability window, starting from the April 14 LOI.
For investors, Baytown’s current revenue isn’t the big question. The market wants to see if the company can take its recent financing, site-control, and grant news and actually fund a U.S. manufacturing project.
J-Star remains well under its IPO price. The company’s final prospectus listed a $4 IPO price for shares approved on Nasdaq as YMAT, with 1.25 million ordinary shares in the deal and gross proceeds of $5 million before expenses.
The rally puts J-Star into a busy solid-state battery market. QuantumScape is going after faster charging and longer range with its lithium-metal solid-state batteries, while Solid Power calls itself a maker of all-solid-state battery cells and has deals with BMW and Ford. J-Star is coming from Taiwan’s carbon-composites and resin-systems industry and wants to build a battery platform in the U.S.
But the risk is clear. The central bank’s approval doesn’t mean the loan is drawn, there’s no DOE grant yet, and Baytown site work still needs final deals and follow-through. If funding gets delayed or the premarket move doesn’t hold once the session starts, the stock could be back under Nasdaq compliance pressure, the same issue that led to the consolidation vote.
Nasdaq Composite closed almost unchanged Tuesday, up just 0.03%. That didn’t give J-Star much market help. YMAT’s action looked driven by the stock, not by the index.
The open will show if the early jump in J-Star is real buying or just premarket noise. Right now, the stock is moving more on the Texas battery project, which still lacks funding, permits, deals, and needs time, than on its actual results.
