Synchrony Financial (SYF) had the lowest return in June 2016 by a US stock in the S&P 500 (GSPC), returning -18.8%.

ASSET	MONTH	% RETURN
Synchrony Financial (SYF)	June 2016	-18.84%
Invesco (IVZ)	June 2016	-17.77%
Smurfit WestRock (SW)	June 2016	-17.63%
Charles Schwab (SCHW)	June 2016	-17.23%
NXP Semiconductors (NXPI)	June 2016	-16.75%
Delta Air Lines (DAL)	June 2016	-16.18%
Biogen (BIIB)	June 2016	-16.03%
EPAM Systems (EPAM)	June 2016	-15.45%
Citizens Financial (CFG)	June 2016	-14.18%
Norwegian Cruise Line (NCLH)	June 2016	-13.73%
Royal Caribbean Cruises (RCL)	June 2016	-12.93%
State Street (STT)	June 2016	-12.9%
CF Industries (CF)	June 2016	-12.87%
Huntington Bancshares (HBAN)	June 2016	-12.81%
KeyCorp (KEY)	June 2016	-12.79%
Regeneron Pharmaceuticals (REGN)	June 2016	-12.42%
Capital One Financial (COF)	June 2016	-12.41%
MetLife (MET)	June 2016	-11.9%
Ameriprise Financial (AMP)	June 2016	-11.63%
Arista Networks (ANET)	June 2016	-11.48%
Bunge (BG)	June 2016	-11.47%
Regions Financial (RF)	June 2016	-11.41%
Interactive Brokers (IBKR)	June 2016	-10.92%
CBRE Group Inc Class A (CBRE)	June 2016	-10.75%
Raymond James Financial (RJF)	June 2016	-10.54%