I agree that big money was probably the cause of Bitcoin jump from $3000 to $14 000 in just few months, but it was some kind of test since they stop at one point. Even if they buying with help of OTC, when buying large quantities of something that has a limited supply, it must have an impact on the price. Maybe they change strategy, buying smaller quantities ensures a stable /lower price, and they have it now.
the reason for that jump was because it was a correction not a rise. when price was pushed down below $6k it became unstable even though it lasted a while and at the time it didn't seem like it. that is why i have been calling it a
reverse bubble. as it pops, just like a regular bubble, the reversal is fast and big because money is running in just like bubbles where it is running out.