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NEW YORK (TheStreet) -- After the market close, Stockpickr updates a series of portfolios called Today's Lists with information from that trading day. It's a useful tool for getting a quick picture of how the market moved that day.

If you are a

Stockpickr member

and have a Today's List stock in one of your portfolios, you'll receive an email alert after that list is updated. You can

become a Stockpickr member here

.

Here's a sampling of what made Today's Lists today, Aug. 31:

52-Week Highs

:

Marvel

( MVL) rose to a new high of $48.37 on Monday on news that

Disney

(DIS) - Get Walt Disney Company Report

would

buy the company

for $4 billion. Marvel closed up 25.2% for the day at $48.37.

TheStreet Recommends

For more stocks setting new highs on Monday, including

BioCryst

(BCRX) - Get BioCryst Pharmaceuticals, Inc. Report

, visit the

52-Week Highs

list.

52-Week Lows

:

Energy Conversion Devices

( ENER) hit a new low of $11.04 before closing down 6% for the day at $11.21. For more new lows, check out the

52-Week Lows

list.

Biggest % Gainers

:

Sequenom

(SQNM)

gained 21% to close at $6.39 on Monday on expectations of

positive news

regarding its prenatal Down Syndrome test.

For more of Monday's big gainers, including

Sinovac

(SVA) - Get Sinovac Biotech Ltd. Report

, visit the

Biggest % Gainers

list.

Biggest % Losers

:

AIG

(AIG) - Get American International Group, Inc. Report

reversed some of last week's gains, falling 9.8% to close at $45.33 after a

weekend article

in

Barron's

said shares were overpriced.

For more stocks that fell big on Monday, including

Baker Hughes

(BHI)

, check out the

Biggest % Losers

list.

Analyst Downgrades

: Bank of America/Merrill Lynch downgraded Morgan Stanley to neutral from buy and cut its price target on the stock to $32 from $33. For more, check out the

Analyst Downgrades

list.

See

all of Today's Lists here

, including

Rising on Unusual Volume

and

Analyst Upgrades

.

-- Written by Rebecca Corvino in New York.