Burlington Stores (BURL) had the highest return in October 2013 by a large-cap US stock, returning 57.6%.

ASSET	MONTH	% RETURN
Burlington Stores (BURL)	October 2013	57.59%
QXO (QXO)	October 2013	42.86%
TKO (TKO)	October 2013	26.71%
Compania de Minas Buenaventura SAA ADR (BVN)	October 2013	26.53%
Builders FirstSource (BLDR)	October 2013	25.59%
First Solar (FSLR)	October 2013	24.8%
Amkor Technology (AMKR)	October 2013	23.95%
Xylem (XYL)	October 2013	23.91%
Leonardo DRS, Inc Common Stock (DRS)	October 2013	23.03%
Chipotle Mexican Grill (CMG)	October 2013	22.78%
McKesson (MCK)	October 2013	21.22%
Diamondback Energy (FANG)	October 2013	21.22%
ICICI Bank (IBN)	October 2013	20.58%
Valero Energy (VLO)	October 2013	20.56%
Carlyle (CG)	October 2013	19.66%
Axon Enterprise (AXON)	October 2013	19.41%
Cheniere Energy Partners (CQP)	October 2013	19.11%
Advanced Energy Industries (AEIS)	October 2013	18.91%
Align Technology (ALGN)	October 2013	18.88%
Baker Hughes (BKR)	October 2013	18.66%
Southwest Airlines (LUV)	October 2013	18.11%
Logitech International (LOGI)	October 2013	17.6%
MicroStrategy (MSTR)	October 2013	17.52%
West Pharmaceutical Services (WST)	October 2013	17.41%
AeroVironment (AVAV)	October 2013	17.36%

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