Usually we all want to see Bitcoin pric go higher and higher in each single minuet, But this is painful that when BTC grown and we drop out portfolio. Basically Alt market comes in crypto for multipurpose but most of use involved in alt market for making our bitcoins double, triple or more than this.
Here is everybody knew about that whenever bitcoin make sudden move weather its base on any news or due to whales artificial price manipulation this cause huge damage done in both our portfolio and alt coins too.
I think this is very strong reason of alt market crashes and many of new investors harms too from this behavior of market.
Certain drop will not occur easily so if you will monitor your portfolio closely, losing some big amount of money is avoidable especially if the market will make a sign of a long drop then it is the time that you should sell your portfolio. Don't hold it just because you are losing some amount, be practical it's better to loss 100 usd rather than 1000 usd.
Altcoin is getting stronger nowadays and I didn't notice any pump and dumps in bitcoin so the chances that we will hitting the bull run is very near.