A polymerizable compound represented by formula: wherein, in formula, at least one of P 5, P 6, P 7, P 8, P 9 and P 10 is acryloyloxy or methacryloyloxy, and at least one remainder is 2-methyl-2-butenoyloxy, 2-methylenebutanoyloxy, 2-methyl-1-propenyloxy, 2,2-difluorovinyloxy, 2-butenyloxy or 2-methyl-2-propenyloxy; S 5, S 6, S 7, S 8, S 9 and S 10 are independently a single bond or alkylene having 1 to 5 carbons, and in the alkylene, at least one of -CH 2 - may be replaced by -O-, -COO- or -OCO-, and at least one of -CH 2 -CH 2 - may be replaced by -CH=CH-; c1, c2, c3 and c4 are independently 0, 1 or 2, and a sum of c1, c2, c3 and c4 is an integer from 0 to 5; ring A 5, ring A 6, ring A 7 and ring A 8 are independently 1,4-phenylene, pyrimidine-2,5-diyl, pyridine-2,5-diyl, naphthalene-1,4-diyl, naphthalene-1,5-diyl, naphthalene-2,6-diyl, 1,4-cyclohexylene, tetrahydropyran-2,5-diyl or 1,3-dioxane-2,5-diyl, and in the rings, at least one of hydrogen may be replaced by fluorine, chlorine, alkyl having 1 to 5 carbons, alkoxy having 1 to 5 carbons, or alkyl having 1 to 5 carbons or alkoxy having 1 to 5 carbons in which at least one of hydrogen is replaced by halogen; Z 4, Z 5 and Z 6 are independently a single bond, alkylene having 1 to 5 carbons, -CO-, -COO-, -OCO-, -CH=CH-, -CH=CH-COO-, -OCO-CH=CH-, -C(CH 3)=CH-COO-, -OCO-CH=C(CH 3)-, -CH=C(CH 3)-COO-, -OCO-(CH 3)C=CH-, -C(CH 3)=C(CH 3)-COO-, -OCO-C(CH 3)=C(CH 3)-, -CO-CH=CH-, -CH=CH-CO-, -(CH 3)=C(CH 3)-, -CH=CH-CH 2 O-, -OCH 2 -CH=CH-, -CH=CH-OCH 2 - or -CH 2 O-CH=CH-; and d1, d2 and d3 are independently 0 or 1, and a sum of d1, d2 and d3 is 2 or 3. wherein, in formula, at least one of P 5, P 6, P 7, P 8, P 9 and P 10 is acryloyloxy or methacryloyloxy, and at least one remainder is 2-methyl-2-butenoyloxy, 2-methylenebutanoyloxy, 2-methyl-1-propenyloxy, 2,2-difluorovinyloxy, 2-butenyloxy or 2-methyl-2-propenyloxy; S 5, S 6, S 7, S 8, S 9 and S 10 are independently a single bond or alkylene having 1 to 5 carbons, and in the alkylene, at least one of -CH 2 - may be replaced by -O-, -COO- or -OCO-, and at least one of -CH 2 -CH 2 - may be replaced by -CH=CH-; c1, c2, c3 and c4 are independently 0, 1 or 2, and a sum of c1, c2, c3 and c4 is an integer from 0 to 5; ring A 5, ring A 6, ring A 7 and ring A 8 are independently 1,4-phenylene, pyrimidine-2,5-diyl, pyridine-2,5-diyl, naphthalene-1,4-diyl, naphthalene-1,5-diyl, naphthalene-2,6-diyl, 1,4-cyclohexylene, tetrahydropyran-2,5-diyl or 1,3-dioxane-2,5-diyl, and in the rings, at least one of hydrogen may be replaced by fluorine, chlorine, alkyl having 1 to 5 carbons, alkoxy having 1 to 5 carbons, or alkyl having 1 to 5 carbons or alkoxy having 1 to 5 carbons in which at least one of hydrogen is replaced by halogen; Z 4, Z 5 and Z 6 are independently a single bond, alkylene having 1 to 5 carbons, -CO-, -COO-, -OCO-, -CH=CH-, -CH=CH-COO-, -OCO-CH=CH-, -C(CH 3)=CH-COO-, -OCO-CH=C(CH 3)-, -CH=C(CH 3)-COO-, -OCO-(CH 3)C=CH-, -C(CH 3)=C(CH 3)-COO-, -OCO-C(CH 3)=C(CH 3)-, -CO-CH=CH-, -CH=CH-CO-, -(CH 3)=C(CH 3)-, -CH=CH-CH 2 O-, -OCH 2 -CH=CH-, -CH=CH-OCH 2 - or -CH 2 O-CH=CH-; and d1, d2 and d3 are independently 0 or 1, and a sum of d1, d2 and d3 is 2 or 3.