BTCS (BTCS) had the highest return in August 2013 by a US stock, returning 200%.

ASSET	MONTH	% RETURN
BTCS (BTCS)	August 2013	200%
Sphere 3D (ANY)	August 2013	170.16%
INVO Fertility (IVF)	August 2013	150%
Ammo (POWW)	August 2013	120.99%
Mannatech (MTEX)	August 2013	101.53%
BioLife Solutions (BLFS)	August 2013	83.33%
Compugen (CGEN)	August 2013	79.81%
Vivakor (VIVK)	August 2013	79.02%
NextTrip (NTRP)	August 2013	78.05%
Fluent (FLNT)	August 2013	71.41%
Capricor Therapeutics (CAPR)	August 2013	69.35%
Ubiquiti Networks (UI)	August 2013	65.45%
TROOPS (TROO)	August 2013	64.67%
Clean Energy Technologies, Inc Common Stock (CETY)	August 2013	64.29%
Oblong (OBLG)	August 2013	62.37%
Metalla Royalty & Streaming (MTA)	August 2013	62.02%
Lexaria Bioscience (LEXX)	August 2013	59.01%
Pacific Biosciences of California (PACB)	August 2013	58.33%
Kartoon Studios (TOON)	August 2013	58%
Phoenix New Media (FENG)	August 2013	56.66%
Kolibri Global Energy Inc Common stock (KGEI)	August 2013	55.56%
BOS Better Online Solutions (BOSC)	August 2013	52.89%
Natural Health Trend (NHTC)	August 2013	51.47%
Xpel (XPEL)	August 2013	51.02%
Lesaka Technologies (LSAK)	August 2013	50.68%