Quantum SPAC Ends Busted-Deal Case Against Japan’s Monex Group

Quantum Fintech Acquisition Corp. ended its $50 million lawsuit against Monex Group Inc., dropping allegations that the Japanese financial firm sabotaged their planned blank-check merger.

Quantum, a special purpose acquisition company, dismissed claims that Monex deliberately undermined the SPAC’s proposed combination with TradeStation Group Inc., a US-based Monex subsidiary that runs a stock-trading platform.

Wednesday’s voluntary surrender may indicate a potential settlement or another agreement, although neither side appears to have made a public statement about the move. Attorneys involved in the case didn’t immediately respond to requests for comment.

The dispute was part of a wave of litigation prompted ...