Sudden price movements are very common. Usually it’s a reaction to the price itself or a record sale. All the people on the fence about buying are motivated to suddenly buy before “the price gets too high”.
Especially for this card, a lot of people are really focused on the price and what direction it will go. When the wind starts blowing north, people start locking in a price and the temporarily reduced supply creates a feedback loop. FOMO is a dangerous drug
Of course, anything could be “market manipulation”. I don’t usually buy into that narrative though without very strong evidence since an entirely organic explanation exists and it’s not suprising to me to see the moonbreon hitting these prices