Hormel Foods (HRL) had the highest return in April 1985 by a US stock, returning 105.9%.

ASSET	MONTH	% RETURN
Hormel Foods (HRL)	April 1985	105.91%
Unilever PLC ADR (UL)	April 1985	92.24%
AlphaVest Acquisition Corp Ordinary Shares (ATMV)	April 1985	55.56%
Neonode (NEON)	April 1985	45.45%
California Water Service (CWT)	April 1985	28.14%
BHP (BHP)	April 1985	27.64%
Escalade (ESCA)	April 1985	26.68%
Rave Restaurant (RAVE)	April 1985	25.3%
Glacier Bancorp (GBCI)	April 1985	25.2%
RLI (RLI)	April 1985	24.98%
Smith AO (AOS)	April 1985	22.79%
Nabors Industries (NBR)	April 1985	21.43%
Owens & Minor (OMI)	April 1985	20.96%
Shell PLC ADR (SHEL)	April 1985	20.63%
Bank of New York Mellon (BK)	April 1985	18.96%
Franklin Resources (BEN)	April 1985	18.68%
AutoNation (AN)	April 1985	17.65%
Tootsie Roll Industries (TR)	April 1985	17.12%
Alico (ALCO)	April 1985	16.3%
Valero Energy (VLO)	April 1985	15.59%
Honeywell International (HON)	April 1985	15.58%
Popular (BPOP)	April 1985	15.13%
Reading International (RDI)	April 1985	15.1%
UnitedHealth (UNH)	April 1985	15.02%
PNC Financial Services (PNC)	April 1985	14.9%