Porsche could be among the winners when Germany's Dax index gets its biggest ever shakeup.
The automaker is tipped to be among firms added to the blue-chip stock list.
Exchange operator Deutsche Boerse is due to reveal the full changes on Friday (September 3).
The headline will be an expanded membership of 40 firms, up from 30 now.
Criteria for joining have already been tightened up.
Firms will have to publish audited reports, and show two years of positive earnings.
Index members will also have to comply with Germany's Corporate Governance Code, which requires the formation of audit committees.
The changes were partly prompted by the Wirecard scandal.
The payments firm collapsed after disclosing a huge hole in its accounts, which auditors said was the result of sophisticated fraud.
Other firms tipped to join the Dax include aerospace giant Airbus...
Nivea creams maker Beiersdorf...
And online fashion retailer Zalando.