XPO Logistics (XPO) had the highest return in June 2006 by a large-cap US stock, returning 29.5%.

ASSET	MONTH	% RETURN
XPO Logistics (XPO)	June 2006	29.47%
Hologic (HOLX)	June 2006	24.65%
Old Dominion Freight Line (ODFL)	June 2006	21.49%
CH Robinson Worldwide (CHRW)	June 2006	21.09%
United Therapeutics (UTHR)	June 2006	19.48%
Akamai Technologies (AKAM)	June 2006	15.57%
U-Haul (UHAL)	June 2006	14.4%
Lincoln Electric (LECO)	June 2006	14.37%
Cognizant Technology Solutions Corp Class A (CTSH)	June 2006	14.19%
Steel Dynamics (STLD)	June 2006	14.07%
Contura Energy (CTRA)	June 2006	13.95%
Credicorp (BAP)	June 2006	13.92%
AstraZeneca PLC ADR (AZN)	June 2006	13.86%
Expeditors International of Washington (EXPD)	June 2006	13.52%
Garmin (GRMN)	June 2006	13.38%
Gold Fields Ltd ADR (GFI)	June 2006	13.09%
CME (CME)	June 2006	12.3%
Alphabet Inc Class A (GOOGL)	June 2006	12.26%
Saia (SAIA)	June 2006	12.18%
Tenaris SA ADR (TS)	June 2006	12.18%
Telefonica Brasil SA ADR (VIV)	June 2006	12.06%
AAON (AAON)	June 2006	11.9%
Aspen Technology (AZPN)	June 2006	11.75%
CoStar (CSGP)	June 2006	11.75%
Amazon (AMZN)	June 2006	11.71%

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