NEW YORK (

TheStreet

) -- Small-caps were soaring Monday after a renewal in deal activity spurred stocks. Shares of

OptionsXpress

( OXPS) were climbing 15% to $17.69 after

Charles Schwab

(SCHW) - Get Report

said it will buy the online retail brokerage in an all-stock transaction worth $1 billion.

Shareholders will be offered 1.02 shares of Schwab's stock for every share held, valuing OptionsExpress at $17.91 per share.

Shares of

Leap Wireless

(LEAP)

were leaping 12% to $13.64 on the back of heightened deal buzz following the

AT&T

(T) - Get Report

-

T-Mobile

deal announced over the weekend. Speculation that

Sprint Nextel

(S) - Get Report

might gobble up smaller players to compete with the merged entity was driving the stock.

Verigy

( VRGY), a manufacturer of semiconductor testing equipment, was ahead by 9.6% at $13.98 after it said that a $908 million offer it received from Japan's

Advantest

was superior to a pending deal with

LTX-Credence.

Globalstar

(GSAT) - Get Report

, a provider of mobile, satellite voice and data services, was among the biggest gainers Monday, after the FCC (Federal Communications Committee) granted it the authority to operate second generation satellites within the United States. The stock was gaining nearly 30% to $1.35 per share.

Shares of

YRC Worldwide

(YRCW) - Get Report

were attracting unusual interest, surging 13.5% to $2.13 on volumes more than double its three-month average. The trucking company warned last week that it failed to get pension funds to sign off on its restructuring plan, a move that will potentially prompt its lenders to rule that it is in default and force it into bankruptcy. Negotiations are still underway.

Rite Aid

(RAD) - Get Report

was another stock gaining on unusual volume activity. Shares were up 8.6% at $1.06 per share.

Shares of drug maker

Curis

(CRIS) - Get Report

were gaining after it announced that a mid-stage trial of a skin-cancer treatment it is studying with

Roche's

Genentech unit had been successful in shrinking tumors. The stock was climbing 11.6% to $3.27.

Uranium mining company

Denison Mines

(DNN) - Get Report

was gaining after it announced an increase in the resource estimate of its Hairhan deposit in Mongolia. Uranium contained in the Indicated Resources increased 151% and in Inferred Resources increased 67% over the resources reported previously. The stock had been under pressure over concerns about the nuclear power plant crisis in Japan.

--Written by Shanthi Bharatwaj in New York

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Disclosure: TheStreet's editorial policy prohibits staff editors and reporters from holding positions in any individual stocks.