Bitcoin should go up first and by bitcoin's market value increases altcoin's market value decreases. It's inversely proportional. It's because we have something we called btc dominance in which bitcoin dominates the whole cryptocurrency market. And surely after a bitcoin pump and when bitcoin stops or got its bull exhaustion, it's time for your alts to pop up.

Usually a single alt pump is caused by its company because of a good news or a good hype from people. That's where shilling is entering the conversation.