Go to the Dashboard, select required portfolio and then click on the Share my portfolio button (on mobile devices you'll have to click on the "..." button).
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You can make the portfolio available to everyone - it will appear in the list of public portfolios in the Community section, or leave access only by link - then only those who have a link to your portfolio will be able to view it.
How to share a portfolio without its value?
To do this, in the portfolio publishing settings, select the Hide portfolio value option.
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You can manage portfolio publicity settings on the portfolio management page.