AngloGold Ashanti (AU) had the highest return in February 1997 by a large-cap US stock, returning 33.3%.

ASSET	MONTH	% RETURN
AngloGold Ashanti (AU)	February 1997	33.33%
Hecla Mining (HL)	February 1997	26.67%
Pan American Silver (PAAS)	February 1997	25.89%
Gold Fields Ltd ADR (GFI)	February 1997	24.32%
Neurocrine Biosciences (NBIX)	February 1997	21.05%
Ionis Pharmaceuticals (IONS)	February 1997	20.16%
Invesco (IVZ)	February 1997	19.79%
Coeur Mining (CDE)	February 1997	19.67%
Newmont Goldcorp (NEM)	February 1997	19.12%
Ciena (CIEN)	February 1997	18.94%
Regal Beloit (RRX)	February 1997	18.54%
Ross Stores (ROST)	February 1997	17.92%
Freeport-McMoran Copper & Gold (FCX)	February 1997	17.24%
Universal Health Services (UHS)	February 1997	17.17%
Heico (HEI)	February 1997	16.85%
Honda Motor Co Ltd ADR (HMC)	February 1997	16.82%
Expeditors International of Washington (EXPD)	February 1997	16.28%
New York Times (NYT)	February 1997	15.98%
Molson Coors Brewing (TAP)	February 1997	15.43%
Laboratory Corporation of America (LH)	February 1997	15.38%
Unilever PLC ADR (UL)	February 1997	15.12%
First Horizon National (FHN)	February 1997	14.37%
Gap (GAP)	February 1997	14.29%
IDEXX Laboratories (IDXX)	February 1997	14.09%
Everest (EG)	February 1997	14.03%

Large-cap stocks are treated as having a market cap of $10B+.