Trade Desk (TTD) had the highest return between February 1, 2018 and December 31, 2018 by a US stock in the S&P 500 (GSPC), returning 142.5%.

ASSET	DATE	% RETURN
Trade Desk (TTD)	2/1/2018 - 12/31/2018	142.5%
TKO (TKO)	2/1/2018 - 12/31/2018	113.53%
DexCom (DXCM)	2/1/2018 - 12/31/2018	106.62%
Axon Enterprise (AXON)	2/1/2018 - 12/31/2018	66.16%
Lululemon Athletica (LULU)	2/1/2018 - 12/31/2018	57.46%
Fortinet (FTNT)	2/1/2018 - 12/31/2018	53.95%
NRG Energy (NRG)	2/1/2018 - 12/31/2018	53.38%
Deckers Outdoor (DECK)	2/1/2018 - 12/31/2018	50.62%
Eli Lilly and (LLY)	2/1/2018 - 12/31/2018	45.48%
Chipotle Mexican Grill (CMG)	2/1/2018 - 12/31/2018	37.49%
Church & Dwight (CHD)	2/1/2018 - 12/31/2018	36.66%
Advanced Micro Devices (AMD)	2/1/2018 - 12/31/2018	35.54%
Paycom Soft (PAYC)	2/1/2018 - 12/31/2018	34.21%
Workday (WDAY)	2/1/2018 - 12/31/2018	34.15%
Amun Bitwise Select 10 Large Cap Crypto ETP (KEYS)	2/1/2018 - 12/31/2018	33.42%
Merck (MRK)	2/1/2018 - 12/31/2018	33.09%
O’Reilly Automotive (ORLY)	2/1/2018 - 12/31/2018	30.92%
McCormick (MKC)	2/1/2018 - 12/31/2018	30.32%
Zebra Technologies (ZBRA)	2/1/2018 - 12/31/2018	29.93%
VeriSign (VRSN)	2/1/2018 - 12/31/2018	29.84%
Match (MTCH)	2/1/2018 - 12/31/2018	29.13%
Boston Scientific (BSX)	2/1/2018 - 12/31/2018	28.84%
AES (AES)	2/1/2018 - 12/31/2018	28.45%
Molina Healthcare (MOH)	2/1/2018 - 12/31/2018	27.07%
Hormel Foods (HRL)	2/1/2018 - 12/31/2018	27.01%