Global Broker Shares Plunge 3%, $170 Billion Market Cap Vanishes in a Day

Marex Group PLC (Nasdaq: MRX) closed at $54.47 on May 18, down 3.23%, with trading volume of 1.24 million shares, bringing its market capitalization to about $3.9 billion (approximately KRW 5.3 trillion). This marks a one-day market-cap decline of roughly $123 million (KRW 170 billion).

In its first-quarter 2026 results announced on May 6, the company beat market expectations with earnings per share of $1.48. Earlier, on March 3, Marex reaffirmed double-digit growth for full-year 2025 by reporting revenue of $2.024 billion and pretax profit of $411.6 million. On May 18, Marex successfully completed a consent solicitation to amend the terms of its 6.404% senior notes due 2029, further streamlining its capital structure.

Headquartered in the UK, Marex Group has grown into a global financial-services platform offering liquidity provision, clearing services, and prime brokerage across the energy, commodities, and financial derivatives markets. Since its Nasdaq listing in 2024, the firm has gradually transitioned out of private-equity ownership, attracting investor interest as a mid-sized brokerage focused on growth and profitability.