Enphase Energy (ENPH) had the highest return between 2018 and 2023 by a US stock in the S&P 500 (GSPC), returning 5,428.9%.

ASSET	YEARS	% RETURN
Enphase Energy (ENPH)	2018-2023	5,428.87%
Advanced Micro Devices (AMD)	2018-2023	1,314.68%
Super Micro Computer (SMCI)	2018-2023	1,260.1%
Tesla (TSLA)	2018-2023	1,094.62%
NVIDIA (NVDA)	2018-2023	922.56%
Axon Enterprise (AXON)	2018-2023	874.1%
DexCom (DXCM)	2018-2023	761.44%
Deckers Outdoor (DECK)	2018-2023	744.73%
Chipotle Mexican Grill (CMG)	2018-2023	686.17%
Eli Lilly and (LLY)	2018-2023	666.75%
Builders FirstSource (BLDR)	2018-2023	658.82%
Fair Isaac (FICO)	2018-2023	658.76%
Fortinet (FTNT)	2018-2023	568.76%
Lululemon Athletica (LULU)	2018-2023	561.35%
Cadence Design Systems (CDNS)	2018-2023	548.5%
KLA-Tencor (KLAC)	2018-2023	511.08%
Palo Alto Networks (PANW)	2018-2023	505.92%
Synopsys (SNPS)	2018-2023	499.43%
Monolithic Power Systems (MPWR)	2018-2023	487.03%
Quanta Services (PWR)	2018-2023	458.57%
ServiceNow (NOW)	2018-2023	439.31%
Blackstone (BX)	2018-2023	428.56%
Broadcom (AVGO)	2018-2023	423.55%
Carrier Global (CARR)	2018-2023	404.23%
Jabil Circuit (JBL)	2018-2023	403.78%