The Day's Winners

FleetBoston Financial

(FBF)

moved up about 8% to $20.29 on takeover rumors. According to a column in

Barron's

magazine, FleetBoston may be a possible target for an acquisition by

HSBC Holdings

(HBC)

. HSBC was recently trading up 3.4%.

Shares of space systems manufacturer

Orbital Sciences

(ORB)

rose 9% to $4.37 after the company said it signed a $57 million contract with

Lockheed Martin

(LMT) - Get Report

. Under an eight-year contract, Orbital's technical services division will work with the NASA space research and flight programs.

Teva Pharmaceuticals

(TEVA) - Get Report

added 4% to $63.39 after the company beat the consensus estimate by 6 cents and said it expects to exceed full-year estimates. Teva earned $91.9 million, or 68 cents a share, in the quarter, up from $64.5 million, or 47 cents a share, a year ago. Analysts had been looking for 62 cents a share. Going forward, the company said its third-quarter results will be at least as high as its second quarter, and for the full year it will beat estimates. Teva also said it was comfortable with the current fourth-quarter consensus of 73 cents.

Computer chip equipment manufacturer

Veeco Instruments

(VECO) - Get Report

tacked on 3% to $13.08 after posting better-than-expected second-quarter results. The company earned 2 cents a share in the quarter, excluding charges, and beat the consensus estimate. Veeco earned 46 cents a share a year ago. Revenue fell to $77.3 million from $112.1 million a year ago, while the company said chip-testing equipment revenue increased slightly. For the third quarter, Veeco expects to earn 2 cents to 4 cents a share, compared with estimates of 4 cents.

Cooking supplies seller

Williams-Sonoma

(WSM) - Get Report

was up 8% to $25.44 on an upgrade to buy from market perform by Lehman Brothers. The firm said it believes that the company's focus on operating efficiencies creates an opportunity for improved earnings growth.

The Day's Losers

Shares of

Gene Logic

(GLGC)

shed 1% to $7.89 after the company warned of a full-year shortfall. Gene Logic lost 16 cents a share in the quarter, down from a loss of 35 cents a year ago and ahead of estimates of a loss of 20 cents. Looking ahead, however, the company warned that it expects a loss of about 93 cents a share for the year on revenue of $55.2 million, compared with estimates of a loss of 78 cents on revenue of $65 million.

Medical waste collection and disposal service

Stericycle

(SRCL) - Get Report

lost 2% to $33.26 after

Barron's

magazine questioned whether the company will face antitrust regulations.

Barron's

said the company has begun to raise prices in areas where it has made acquisitions while its market share has increased to around 40%.

Synaptics

(SYNA) - Get Report

fell 25% to $5.27 as the lock-up period restricting the selling of shares by insiders from the company's initial public offering expired. The company, which makes touch-sensitive computer equipment, went public in January at a price of $11 a share. About 29% of the company's total shares were released from the lock-up, prompting the selloff.

Xcel Energy

(XEL) - Get Report

was falling another 23% to $5.80 after Standard & Poor's downgraded its credit rating on the company's trading unit

NRG Energy

(NRZ) - Get Report

. Xcel's admission that it is being investigated by two federal agencies also weighed on the stock. The downgrade came Friday after Xcel reported a 48% drop in second-quarter profits and cut its full-year guidance. On its conference call Friday, Xcel said the

Securities and Exchange Commission

and the Commodity Futures Trading Commission are investigating its trading activity regarding round-trip trades. Additionally, the company cautioned that downgrades could push its NRG Energy section into default. NRG was plunging 48% to $2.59.