This article was automatically generated using Dow Jones technology.

Shares of small-cap companies dropped Monday, as the Russell 2000 Index declined 0.6%, and the S&P Small Cap 600 Index was down 0.7%.

Among companies with a market value of $1 billion to $6.7 billion, Sionna Therapeutics Inc. was the biggest laggard during the session, dropping 91%, followed by shares of Lincoln Educational Services Corp., which dropped 25%. Shares of Bitdeer Technologies Group dropped 20%, CEVA Inc. shares plunged 17%, and AXT Inc. tumbled 17%.

Standard Nuclear Inc. was the best performer, surging 36%, followed by AbCellera Biologics Inc., which surged 35%. Obsidian Therapeutics Inc. shares surged 27%, National Energy Services Reunited Corp. surged 23%, and shares of Nutex Health Inc. surged 22%.

Major U.S. stock indexes decreased Monday as the Nasdaq Composite Index declined 0.3%. Meanwhile, the S&P 500 Index fell 0.1%, and the Dow Jones Industrial Average declined 0.1%.

Data source: Dow Jones Market Data, FactSet