The following factors could affect Italian markets on Tuesday.

Reuters has not verified the newspaper reports, and cannot vouch for their accuracy. New items are marked with (*).

For a complete list of diary events in Italy please click on IT/DIA.

ECONOMY

Italy's government faces a vote of confidence in the upper house Senate on Tuesday over its 2026 budget. The government called the vote to speed up the budget's approval and ensure the package becomes law by the end of this year. The budget has drawn criticism from market investors for tax hikes affecting banks, insurers and financial market transactions.

ISTAT releases November non-EU foreign trade data (0900 GMT).

DEBT

Treasury announces sale of BTP and CCTeu bonds, with relative amounts to be auctioned on Dec. 30.

COMPANIES

STELLANTIS STLAM.MI

(*) The automaker's sales in the European Union, Britain and the European Free Trade Association fell in November 2.7% year-on-year, while the overall market rose for 2.4%, data from the European auto lobby ACEA showed on Tuesday.

Italy's cabinet on Monday authorised a state-backed company to buy from Stellantis a site that includes facilities for the temporary storage of used nuclear fuel, a statement said.

(*) BANCO BPM BAMI.MI

Majority shareholder Credit Agricole CAGR.PA, which owns around 20% of the capital and is awaiting European Central Bank clearance to exceed this threshold, could present its own minority list at the next renewal of Banco's board, according to a source familiar with the situation.

DIASORIN DIAS.MI

Shares in the Italian biotech company rose around 5% on Monday after its board proposed a share buyback of up to 250 million euros ($294.03 million).

(*) OFFICINA STELLARE OS.MI, LEONARDO LDOF.MI

The engineering company said on Tuesday it signed a 9.2-million-euro optical systems contract with the state-controlled defence group.

(*) CLASS EDITORI CLED.MI

The media group is not in sales negotiations with entrepreneur Leonardo Maria del Vecchio, the owner and editor in chief Paolo Panerai said in an editorial on Tuesday.

((Milan newsroom, e-mail: reutersitaly@thomsonreuters.com))

For Italian market data and news, click on codes in brackets:

20 biggest gainers (in percentage).............PG.MI

20 biggest losers (in percentage)..............PL.MI

FTSE IT allshare index .FTITLMS

FTSE Mib index........ .FTMIB

FTSE Allstars index... .FTSTAR

FTSE Mid Cap index.... .FTITMC

Block trades.......... .BLK.MI

Stories on Italy...... IT-LEN

For pan-European market data and news, click on codes in brackets:

European Equities speed guide...................EUR/EQUITY

FTSEurofirst 300 index...............................FTEU3

DJ STOXX index.......................................STOXX

Top 10 STOXX sectors............................PGL.STOXXS

Top 10 EUROSTOXX sectors.......................PGL.STOXXES

Top 10 Eurofirst 300 sectors....................PGL.FTEU3S

Top 25 European pct gainers........................PG.PEUR

Top 25 European pct losers.........................PL.PEUR

Main stock markets:

Dow Jones................DJI Wall Street report ......N

Nikkei 225..............N225 Tokyo report.............T

FTSE 100................FTSE London report............L

Xetra DAX..............GDAXI Frankfurt market stories.F

CAC-40..................FCHI Paris market stories....PA

World Indices.....................................0#.INDEX

Reuters survey of world bourse outlook.........EQUITYPOLL1

Western European IPO diary..........................WEUIPO

European Asset Allocation........................EUR/ASSET

Reuters News at a Glance: Equities...............TOP/EQE

Main currency report:...............................FRX/

($1 = 0.8503 euros)