Jack Henry & Associates (JKHY) had the highest return between 1991 and 1992 by a large-cap US stock, returning 1,708.4%.

ASSET	YEARS	% RETURN
Jack Henry & Associates (JKHY)	1991-1992	1,708.45%
Magna International (MGA)	1991-1992	1,034.6%
Electronic Arts (EA)	1991-1992	768.48%
Cisco Systems (CSCO)	1991-1992	619.03%
Royal Gold (RGLD)	1991-1992	613.43%
Best Buy (BBY)	1991-1992	593.48%
PTC (PTC)	1991-1992	523.52%
Toll Brothers (TOL)	1991-1992	409.41%
UnitedHealth (UNH)	1991-1992	389.64%
Lam Research (LRCX)	1991-1992	339.38%
General Dynamics (GD)	1991-1992	327.71%
Lattice Semiconductor (LSCC)	1991-1992	325.52%
Home Depot (HD)	1991-1992	296.25%
JPMorgan Chase (JPM)	1991-1992	286%
Teva Pharma Industries Ltd ADR (TEVA)	1991-1992	279.39%
Advanced Micro Devices (AMD)	1991-1992	262.5%
Oracle (ORCL)	1991-1992	260.4%
Jefferies Financial (JEF)	1991-1992	247.29%
Charles Schwab (SCHW)	1991-1992	246.84%
Southwest Airlines (LUV)	1991-1992	244.21%
Amgen (AMGN)	1991-1992	241.74%
Ross Stores (ROST)	1991-1992	240.53%
Lennar (LEN)	1991-1992	240.03%
Bank of New York Mellon (BK)	1991-1992	237.73%
Aegon NV ADR (AEG)	1991-1992	236.05%

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