During these busy times, it pays to stay on top of the latest profit opportunities. And today’s blog post should be a great place to start. After taking a close look at the latest data on institutional buying pressure and each company’s fundamental health, I decided to revise my Portfolio Grader recommendations for 41 big blue chips. Chances are that you have at least one of these stocks in your portfolio, so you may want to give this list a skim and act accordingly.

This Week’s Ratings Changes:

Upgraded: From Hold to Buy
Symbol	Company Name	Quantitative Grade	Fundamental Grade	Total Grade
DAL	Delta Air Lines Inc.	B	B	B
DD	E. I. du Pont de Nemours and Company	B	C	B
ITUB	Itau Unibanco Holding	C	B	B
LLTC	Linear Technology Corp.	B	C	B
TSM	Taiwan Semiconductor Manufacturing	B	C	B

Upgraded: From Sell to Hold
Symbol	Company Name	Quantitative Grade	Fundamental Grade	Total Grade
ABEV	Ambev SA	C	C	C
AMTD	TD Ameritrade Holding Corp.	D	C	C
BAC	Bank of America Corp.	C	C	C
EPD	Enterprise Products Partners L.P.	C	C	C
FCX	Freeport-McMoRan Inc.	C	C	C
HAL	Halliburton Company	C	D	C
LYB	LyondellBasell Industries NV	D	B	C
MFC	Manulife Financial Corp.	D	B	C
MRK	Merck & Co. Inc.	C	C	C
PBR	Petroleo Brasileiro	C	D	C
S	Sprint Corp.	C	D	C
SBAC	SBA Communications Corp.	D	B	C
SCCO	Southern Copper Corp.	C	C	C
STO	Statoil ASA	C	C	C
UAL	United Continental Holdings Inc.	D	C	C
WMT	Wal-Mart Stores Inc.	C	B	C

Downgraded: From Buy to Hold
Symbol	Company Name	Quantitative Grade	Fundamental Grade	Total Grade
BAP	Credicorp Ltd.	C	B	C
CVS	CVS Health Corp.	C	C	C
DGX	Quest Diagnostics Incorporated	C	B	C
ETR	Entergy Corp.	B	C	C
EXPE	Expedia Inc.	B	C	C
GGP	General Growth Properties Inc.	C	C	C
INTU	Intuit Inc.	C	B	C
ZTS	Zoetis Inc.	C	B	C

Downgraded: From Hold to Sell
Symbol	Company Name	Quantitative Grade	Fundamental Grade	Total Grade
ADI	Analog Devices Inc.	D	C	D
ALXN	Alexion Pharmaceuticals Inc.	D	C	D
DE	Deere & Company	D	C	D
EMR	Emerson Electric Co.	D	C	D
FOX	Twenty-First Century Fox Inc.	D	C	D
WBA	Walgreens Boots Alliance Inc	D	C	D