Market wrap: VN-Index hits two-week low as SAB, banks tumble. The VN-Index fell to a two-week low on Monday after dropping six tenths of a percent. Since September 16, the index has decreased more than 1%. SAB (-2.8%) plunged to a five-month low and was the leading contributor to the loss. The southern beer manufacturer’s share price has declined more than 7% thus far in October.