A Special Purpose Acquisition Company (SPAC) provides a route for private companies to go public by merging with a pre-listed shell company. These "blank check companies" raise funds through an initial public offering (IPO) with the sole purpose of acquiring an existing private business. While SPACs can quickly inject substantial capital, they also introduce considerable risk for both investors and developers in the advanced nuclear sector.
Advanced nuclear projects are characterized by high capital intensity, significant burn rates, and stringent regulation by bodies such as the Nuclear Regulatory Commission (NRC). Given that many of these companies do not yet have commercial products, their valuations are highly speculative. Public market liquidity can rapidly diminish if a developer faces regulatory setbacks or prolonged project delays. The continuous need for new capital is a constant concern for management.
According to Yahoo Finance, SPACs have proven effective in raising hundreds of millions of dollars swiftly. However, they have been less successful in stabilizing company valuations post-merger. Once public, developers must navigate the fluctuations of public market sentiment, including short selling, while simultaneously addressing complex engineering and regulatory challenges. This can lead to significant stock price volatility.
Case Studies in SPAC Volatility
Several advanced nuclear companies that went public via SPACs have experienced notable stock price fluctuations:
The actual cash delivered to a company's balance sheet from a SPAC deal can be lower than the announced valuation due to high investor redemption rates, as noted by Dealroom. Companies often rely on structured Private Investment in Public Equity (PIPE) arrangements to secure capital.
- NuScale Power SMR merged with Spring Valley Acquisition Corp in 2022. Its stock reached a high of over $57 before falling to $8.42 by September 25, 2026, and was subject to short sales.
- Oklo Inc. went public through AltC Acquisition Corp in mid-2024. After hitting 52-week highs near $194, its stock traded at $38.04 on September 25, 2026, representing a roughly 47% year-to-date decline.
- Terra Innovatum merged with GSR III Acquisition Corp, valuing the micro-modular reactor developer at $475 million pre-money equity. Trading as NKLR, its stock reached a 52-week high of $21.90 but closed at $3.50 per share on September 25, 2026.
- ONE Nuclear Energy completed a $1.1 billion merger with Hennessy Capital Investment Corp. VII. Its stock, trading as ONEN, saw a 52-week high of $12.05 and closed at $2.50 on September 25, 2026.
- X-Energy's planned SPAC transaction with Ares Acquisition Corp. was mutually terminated in October 2023, days before shareholder votes. This decision was influenced by deteriorating capital market conditions for pre-revenue nuclear technology companies in 2023, rising interest rates, and reduced guaranteed cash distributions due to shareholder redemptions. The financial turbulence experienced by NuScale Power, partly due to short sellers, also dampened public equity investor sentiment for SMR commercial investments. X-Energy subsequently secured a $700 million Series D financing round in late 2025, anchored by institutional investors and strategic partners like Amazon. In April 2026, X-Energy completed a traditional IPO on the NASDAQ under the ticker XE, raising over $1.02 billion at $23 per share. On September 25, 2026, its stock closed at $15.13 against a 52-week high of $37.10.