Neurocrine Biosciences (NBIX) had the highest return on October 8, 1998 by a US stock with a market cap of $300M+, returning 23.7%.

ASSET	DATE	% RETURN
Neurocrine Biosciences (NBIX)	10/8/1998	23.68%
BioCryst Pharmaceuticals (BCRX)	10/8/1998	23.68%
InterDigital (IDCC)	10/8/1998	20.83%
Telkom Indonesia (Persero) Tbk PT ADR Rep 100 B (TLK)	10/8/1998	18.52%
Celldex Therapeutics (CLDX)	10/8/1998	13.51%
Ciena (CIEN)	10/8/1998	12.88%
Humana (HUM)	10/8/1998	12.84%
SEI Investments (SEIC)	10/8/1998	12.31%
SurModics (SRDX)	10/8/1998	12%
Dollar Tree (DLTR)	10/8/1998	11.71%
Analog Devices (ADI)	10/8/1998	11.46%
Geron (GERN)	10/8/1998	11.11%
Microchip Technology (MCHP)	10/8/1998	11.03%
Morgan Stanley (MS)	10/8/1998	11%
Micron Technology (MU)	10/8/1998	10.94%
Aflac (AFL)	10/8/1998	10.91%
SK Telecom Co Ltd ADR (SKM)	10/8/1998	10.91%
Insight Enterprises (NSIT)	10/8/1998	10.76%
Itron (ITRI)	10/8/1998	10.26%
Bank of New York Mellon (BK)	10/8/1998	10.16%
Grupo Televisa SAB ADR (TV)	10/8/1998	9.73%
Viavi Solutions (VIAV)	10/8/1998	9.09%
ACI Worldwide (ACIW)	10/8/1998	9.09%
MGIC Investment (MTG)	10/8/1998	8.73%
Cisco Systems (CSCO)	10/8/1998	8.58%