South Korea’s largest broker, Mirae Asset Securities, walked away from the record‑setting SpaceX IPO empty‑handed after a procedural mix‑up. Of the 23 underwriters, only Mirae failed to receive any allocation, prompting an apology to its retail clients and a regulator‑led review. The error cost Korean investors more than $1.1 billion in unfilled demand.

Bookbuilding for the $86 billion offering followed a two‑stage process. In mid‑May, lead managers circulated a data‑room request for indicative demand; Mirae interpreted the reply as binding orders. Wall Street banks, however, treated it as a non‑committal signal and only accepted formal bids in June, leaving Mirae with zero retail orders on the final book.

The mishap highlights the fragility of cross‑border coordination in mega‑deals and exposes Korean retail investors to allocation risk. Regulators have expanded their probe to assess whether Mirae met eligibility rules and to determine potential sanctions. With the IPO widely praised for execution, the episode serves as a cautionary tale for underwriters seeking a foothold in future global listings.

Clients received a text apology from vice chairmen Kim Mi‑seop and Heo Seon‑ho, promising a process review to rebuild confidence. While the IPO’s lead banks—Goldman Sachs, Morgan Stanley and Citi—declined comment, the incident may dent Mirae’s ambition to become a regular foreign underwriter and could prompt tighter oversight of Korean brokerage IPO procedures.