Not a Stockpickr member? Join the community today -- for free.

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. 28:

52-Week Highs

: Stocks hitting new highs on Friday included

Marvell Technology

(MRVL) - Get Report

, which

beat analyst expectations

for second-quarter earnings. It rose as high as $15.85 before closing up 5% for the day at $15.36.

EMC

(EMC)

hit a new high of $16.48 before closing up 9 cents for the day at $16.13. Last night on

his "Lightning Round" segment

, Cramer called EMC "one red hot tech stock to own."

For more stocks hitting new highs, visit the

52-Week Highs

list.

Rising on Unusual Volume

:

AIG

(AIG) - Get Report

continued

continued to rise

on Friday, gaining 5% on a 318% increase in volume. For more, visit the

Rising on Unusual Volume

list.

Analyst Upgrades

:

J.Crew

(JCG)

,

which posted a quarterly earnings beat on Thursday

, received an upgrade to hold from Needham and to buy from Citigroup. Barclays raised its price target on the stock to $35, and Friedman Billings Ramsey raised its to $39.

Williams-Sonoma

(WSM) - Get Report

, which Jim Cramer

mentioned on "Stop Trading!"

this week, was bumped up to buy from neutral by Goldman Sachs with a $21 price target.

For more ratings boosts, visit the

Analyst Upgrades

list.

Analyst Downgrades

: UBS downgraded

Potash

(POT)

to neutral from buy and cut its price target on the stock by $5, to $95. UBS also knocked

Mosaic

(MOS) - Get Report

down to neutral and cut its price target on the stock to $53. For more, visit the

Analyst Downgrades

list.

See

all of Today's Lists here

, including

52-Week Lows

,

Biggest % Gainers

and

Unusual Options Activity

.

-- Written by Rebecca Corvino in New York.

Register for Stockpickr today!