An investor would need to either have control of a very large fund or have a very good manager.
I remember back in the early eighties my brother had some CDs that were paying a phenomenal rate. His trailer later burnt down so he built a house. He went to BofA to borrow money and out of the goodness of their hearts the offered to let him cash in his CDs penalty free. He ended up keeping them and borrowing at a lot smaller rate. It would seem now we are in the opposite situation.