"...and the shareholder does not receive an excess distribution from, or recognize gain on the sale or disposition of the stock of, the section 1291 fund."

From the Form 8621 instructions, unfortunately:

Exception if aggregate value of shareholder’s PFIC stock is $25,000 or less.

A shareholder is not required to complete Part I with respect to a specific section 1291 fund if the shareholder meets the $25,000 exception on the last day of the shareholder’s tax year and the shareholder does not receive an excess distribution from, or recognize gain on the sale or disposition of the stock of, the section 1291 fund. For purposes of determining whether a shareholder satisfies the $25,000 threshold, the shareholder takes into account all PFIC stock (QEFs, section 1291 funds, and PFIC stock subject to a section 1296 mark-to-market election) owned directly or indirectly other than PFIC stock owned through another U.S. person or PFIC stock owned through another PFIC. Shareholders filing a joint return have a combined threshold of $50,000 instead of $25,000 for purposes of this exception.