Swiss stocks - Factors to watch on May 25

ZURICH May 25 (Reuters) - Swiss stocks are set to open lower on Monday in line with other European bourses as a public holiday in Britain and the United States was likely to dampen trading activity.

The Swiss blue-chip index SMI.SSMI was indicated to open 25 points lower at 5,379 points, data provided by bank Clariden Leu showed.CLPRE

The following are some of the main factors expected to affect Swiss stocks on Monday:

ROCHE (ROG.VX)

Swiss drugmaker Roche Holding AG (ROG.VX) said on Monday new two-year data showed the effectiveness of its Actemra drug in inhibiting structural damage to the joints of patient with rheumatoid arthritis.

For related news, click on [ROG.VX]

UBS (UBSN.VX)

Swiss bank UBS (UBSN.VX) is free to set whatever bonuses it likes this year, in contrast to 2008 when it needed government approval for variable pay because of a rescue package, Swiss weekly Sonntag reported on Sunday.

For related news, click on [UBSN.VX]

BANKS

* Switzerland's banking authority has subjected banks in the country to a stress test to assess how they would withstand a shock to their loan books, Swiss weekly NZZ am Sonntag reported on Sunday.

For related news, click on [E-CH-BNK]

ECONOMY [M-CH]

COMPANY STATEMENTS [CNR-CH]

EQUITY RESEARCH [CH-RCH]

FOR COMPANIES TRADING EX-DIVIDEND, PLEASE CLICK ON:

.EX.S for all Swiss stocks

.EXSMI.S for blue chips

.EXNSMI.S for other stocks