If you have very large gains on anything that you want to ensure that you keep, you should sell and close them out now while you KNOW you have them.
One of these next pullbacks won’t stay within its big trading range/channel. It will blow through it and head notably lower. And when it does, it could take very high gains into low gains or into the negative. So, be conservative during this time. Don’t be greedy, in a lofty, overvalued market.