NATIONALUM Option Chain

IV	%	OI	%	Pre	Strike	Pre	%	OI	%	IV
					280	0.15	50	83	-1.19	56.3560626220472
					290	0.25	25	33	-2.94	55.463348520595
56.4254535019398	1.49	68	-2.44	78.05	300	0.35	16.67	294	1.03	51.3165857482529
					310	0.45		204	-14.29	47.150215757988
					320	0.7	-6.67	825	.73	46.6429002561304
42.3679351104034	-.54	371	4.95	50.85	330	0.95	-13.64	793	-5.48	41.2253890723331
38.4494288537233	-2.92	766	3.46	41.9	340	1.6	-8.57	1043	-8.27	38.4494288570949
35.8627849967775	-2.8	2223	3.37	32.25	350	2.6	-11.86	1327	-5.28	36.2310285441458
35.6829579189408	-2.27	817	3.16	24.5	360	4.4	-12	1095	-3.52	34.8514149942316
34.7223807935119	-1.2	576	.58	17.25	370	7.5	-9.64	912	-1.83	34.2580524506082
34.6998519968303	-7.9	2099	-1.27	11.7	380	11.9	-8.46	636	2.75	33.9748595390217
34.7868376341994	32.32	1175	-4.4	7.6	390	17.8	-7.53	158	10.49	34.02657278225
35.0988527071164	-4.13	1624	-6.8	4.8	400	24.9	-6.21	686	-4.06	34.1278952432604
35.773575663506	12.31	438	-6.35	2.95	410	32.2	-9.8	16		34.5505431326445
36.9970813677004	6.72	651	-7.5	1.85	420	42	-1.52	275	3.38	34.4483139085281
39.2932698380001	41.11	127	-5.88	0.8	440	62.25	2.47	1	-66.67	12.8597914784263