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.

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Here's a sampling of what made Today's Lists today, Sept. 2:

52-Week Highs

:

Sepracor

(SEPR)

hit a new high of $23.57 today on news that Japan's Dainippon plans to make a bid of around $2.7 billion for the drugmaker. Trading was subsequently halted on Sepracor, up 26.5% for the day at $22.80.

For more stocks making new highs today, check out the

52-Week Highs

list.

Biggest % Gainers

:

Flow International

(FLOW) - Get Report

rose 19.1% to $2.50 on Wednesday after announcing that it would make a stock offering of almost 8 million shares at Tuesday's closing price of $2.10 a share to raise money for debt-repayment and other purposes.

For more stocks on the rise, check out the

Biggest % Gainers

list.

Biggest % Losers

: Losing big on Wednesday was China's

Sinovac

(SVA) - Get Report

, down 18.5% to $8.53, after soaring earlier in the week on anticipation of a deal to supply its swine flu drug to the government of South Korea.

For more stocks heading lower today, including

Fannie Mae

, down 13.8%, and

Novavax

(NVAX) - Get Report

, down 10.7%, check out the

Biggest % Losers

list.

Rising on Unusual Volume

:

AIG

(AIG) - Get Report

rose 5.4% today on a volume increase of 170%. The company is seeking to

cut its IPO fees

in half.

Unusual Options Activity

: Stocks experiencing unusually high options activity today included

Oracle

(ORCL) - Get Report

, with activity

turning bearish on the stock

, and

DE

(DE) - Get Report

.

Analyst Upgrades

: Argus Research upgraded

Las Vegas Sands

(LVS) - Get Report

to buy from hold with an $18 price target. The stock closed up 3.6% at $13.93 today after announcing plans to raise up to $600 million through the sale of exchangeable bonds.

For more ratings increases, check out the

Analyst Upgrades

list.

Analyst Downgrades

: UBS knocked its rating on

D.R. Horton

(DHI) - Get Report

down to sell from neutral with a $10 price target. The stock closed down 6% to $12.13.

For more ratings decreases, check out the

Analyst Downgrades

list.

See

all of Today's Lists here

, including

52-Week Lows

and

TheStreet.com TV Videos

.

-- Written by Rebecca Corvino in New York.