Experimenting with a position in TOS. Consists of a 5 contract RUT butterfly combined with a 2 contract call vertical. Price is currently in between the butterfly and the vertical. Relatively flat P/L line, near delta neutral. Current worth of the position jumps haphazardly, anywhere from -150 to +200, with changes in options pricing. With such noise, how do you determine the real current worth of your positions when you want to close them out?