Why is Rising Dragon Acquisition stock surging today?

Rising Dragon Acquisition Corp stock experienced a staggering 223.3% surge in pre-market trading today, reaching $18.91. This meteoric rise appears to be driven by speculative positioning rather than any significant company-specific news. The company is in the process of completing a business combination with HZJL Cayman Limited, valued at around $350 million in stock.

The new entity would list on Nasdaq under the ticker Xpand Boom Technology Inc. This merger has been extended through sponsor-funded promissory notes, with the latest extension occurring in late July 2026. The transaction is contingent upon SEC registration approval and Nasdaq listing approval. With only about 5.7 million public shares available for trading, the low float is a significant factor amplifying price movements.

Market conditions also played a role, as the broader indices were relatively flat, offering no additional support for the surge. The volatile history of micro-cap SPACs, like RDAC, in their final stages before a merger closes, further contributes to the erratic trading patterns observed today.