XMR was pumped and dumped when the news about Alphabay and Oasis came out. There were traders who took advantage to make a quick profit. They knew many people would be desperate to get in. The same was happening in Lisk when it started to rise from the lows. A whale was accumulating the coin and then the traders wanted to take advantage by pumping the price. But the whale was very clever and he created a big sell wall that totaled 2000 BTC. Now the traders are staying away and the whale is happily picking up his coins.
I see these generalizations made so much when using "pump and dump".
Where is the dump? How do you know the whale or larger holders actually dumped and not an accumulation of smaller monero holders?
Speculation, exactly, you can't tell.
your comment holds 0 proof of anything but perhaps a tinge of envy.