It is straightforward to simulate GBM path from a set starting value, but what if I also want it to arrive at a certain value in the end? Any ideas on how to do it are highly appreciated.
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1This is based on a [Brownian Bridge](https://stats.stackexchange.com/search?q=brownian+bridge): you merely have to exponentiate it. – whuber Sep 26 '17 at 15:13