Globalstar, Inc Common Stock (GSAT) had the highest return between 2013 and 2014 by a large-cap US stock, returning 759.4%.

ASSET	YEARS	% RETURN
Globalstar, Inc Common Stock (GSAT)	2013-2014	759.38%
Tesla (TSLA)	2013-2014	535.46%
Micron Technology (MU)	2013-2014	430.46%
Alnylam Pharmaceuticals (ALNY)	2013-2014	411.87%
Incyte (INCY)	2013-2014	337.26%
Genmab A-S (GMAB)	2013-2014	318.57%
Delta Air Lines (DAL)	2013-2014	312.98%
Southwest Airlines (LUV)	2013-2014	311.55%
DexCom (DXCM)	2013-2014	296.33%
Cheniere Energy (LNG)	2013-2014	270.53%
Netflix (NFLX)	2013-2014	258.8%
Skyworks Solutions (SWKS)	2013-2014	247.98%
Arrowhead Pharmaceuticals (ARWR)	2013-2014	241.67%
Best Buy (BBY)	2013-2014	236.23%
Super Micro Computer (SMCI)	2013-2014	232.51%
Illumina (ILMN)	2013-2014	229.02%
Broadcom (AVGO)	2013-2014	221.97%
Diamondback Energy (FANG)	2013-2014	207.19%
Jazz Pharmaceuticals (JAZZ)	2013-2014	201.36%
Ensign (ENSG)	2013-2014	197.51%
Axon Enterprise (AXON)	2013-2014	190.99%
Neurocrine Biosciences (NBIX)	2013-2014	190.89%
Facebook (META)	2013-2014	184.33%
HP (HPQ)	2013-2014	182.14%
NXP Semiconductors (NXPI)	2013-2014	181.92%

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