qualified fund

(I) at all times during the taxable year (and during each preceding taxable year to which an election under subclause (V) applied), such partnership has at least 20 partners and no single partner owns more than 20 percent of the interests in the capital or profits of the partnership,

(II) the principal activity of such partnership for such taxable year (and each such preceding taxable year) consists of buying and selling options, futures, or forwards with respect to commodities,

(III) at least 90 percent of the gross income of the partnership for the taxable year (and for each such preceding taxable year) consisted of income or gains described in subparagraph (A), (B), or (G) of section 7704(d)(1) or gain from the sale or disposition of capital assets held for the production of interest or dividends,

(IV) no more than a de minimis amount of the gross income of the partnership for the taxable year (and each such preceding taxable year) was derived from buying and selling commodities, and

(V) an election under this subclause applies to the taxable year.

An election under subclause (V) for any taxable year shall be made on or before the 1st day of such taxable year (or, if later, on or before the 1st day during such year on which the partnership holds an instrument referred to in clause (i)). Any such election shall apply to the taxable year for which made and all succeeding taxable years unless revoked with the consent of the Secretary.