Kodiak Sciences Inc. shares (NASDAQ:KOD) closed at $9.86, down $40.49, or 80.42% after the firm unveiled top-line data from its randomized, double-masked, active comparator-controlled phase IIb/III trial testing KSI-301, an antibody biopolymer conjugate, in treatment-naïve subjects with wet age-related macular degeneration (AMD).