Bill Ackman’s PSUS Shares Plunge 18% as Trading Debuts

Key Facts

Shares of Bill Ackman’s Pershing Square USA (PSUS) experienced a sharp 18% decline upon debuting, coinciding with the official closing of the combined IPO for both PSUS and Pershing Square Inc (PSI). The offering included PSI, which serves as the parent company of the investment manager PSCM, marking a dual-entity public debut. Despite the formal completion of the listing, the stock faced immediate selling pressure following a significant reduction in original fundraising targets. Analysts suggest this poor performance underscores a disconnect between the fund's internal valuation and institutional appetite for closed-end structures. This listing follows a previously aborted attempt in 2024, adding further complexity to Ackman’s strategic expansion. Market participants are now closely monitoring the stability of both the fund and its parent management company following this volatile entrance into the public markets.