HEADLINE STOCKS-U.S. small/midcap stocks on the move on June 1

(For large-cap stocks on the move, click on [WATCH/US]) (Adds Marshall Edwards, Cobalt International and others)

June 1 (Reuters) - Some small and midcap stocks on the move on Tuesday:

MARSHALL EDWARDS INC MSHL.O, $2.45, down 39 pct

The pharmaceutical company said final analysis of data from a late-stage study showed its experimental cancer drug did not meet its main goal. [ID:nSGE6500HI]

EV3 INC EVVV.O, $22.25, up 18 pct

Medical products maker Covidien Plc (COV.N) plans to acquire the maker of stents and other vascular devices for $2.6 billion, the companies said. [ID:nN0193836]

MEDIACOM COMMUNICATIONS CORP MCCC.O, $6.18, up 16 pct

The company said Chief Executive Rocco Commisso has offered to take the cable television system operator private at $6 a share, a premium of 13 percent to the stock's Friday closing price. [ID:nSGE6500FE]

COMBIMATRIX CORP (CBMX.O), $2.42, down 12 pct

The biotechnology firm said it has ceased its efforts to find a potential buyer for the company or its assets and it would now focus exclusively on building and growing the diagnostics services business. [ID:nSGE6500E5]

COBALT INTERNATIONAL ENERGY INC (CIE.N), $6.50, down 7 pct

The oil and gas explorer declared force majeure on a drill rig citing the U.S. government's decision to suspend all drilling operations in deepwater Gulf of Mexico following the BP oil spill. [ID:nSGE6500HH]

ROGERS CORP (ROG.N), $30.54, $30.59, up 7 pct

The manufacturer of specialty materials for electronics and consumer markets raised its second-quarter outlook, citing strong sales at two of its segments. [ID:nSGE6500FW]

RADIOSHACK CORP (RSH.N), $21.75, up 6 pct

U.S. private-equity firm Blackstone Group LP (BX.N) has emerged as a leading participant to buy electronics retailer RadioShack after an initial round of bids were completed last week, the New York Post said, citing sources familiar with the matter. [ID:nSGE6500CF]

GLOBAL GEOPHYSICAL SERVICES INC (GGS.N), $9.80, up 5 pct

Credit Suisse started the company with an "outperform" rating and a target price of $13.

SHANDA INTERACTIVE ENTERTAINMENT SNDA.O, $42.71, up 4 pct

The Chinese Internet firm and ringtone provider Hurray Holding Co HRAY.O have signed a deal under which Hurray will acquire an online audio business of Shanda for 415 million newly issued shares of Hurray.

CDC SOFTWARE CDCS.O, $8.38, down 2 pct

The company forecast 2010 adjusted earnings of $1.15 to $1.25 a share and 2011 earnings of $1.35 to $1.45 per share, citing healthy sales momentum. [ID:nWNAB5072] (Reporting by Archana Shankar in Bangalore)