ASP Isotopes is trading at $2.19, up 6.04%, after its subsidiary Quantum Leap Energy signed a binding agreement with South Africa’s Necsa to form a HALEU production joint venture. - QLE is expected to hold about 80% and lead operations and financing. - The agreement covers a test bench and commercial-scale facility, with site access and regulatory support from Necsa. - Market coverage also reported shares jumped following the announcement.