This is what I'm seeing on BTC dominance graph:

Seriously, IF this breaks down, go get some alts to further increase your BTC stash.
Hahahahahaha
It would not be very smart to be trading based on that kind of information or even deciding whether or not to play around with shitcoins based on that kind of information.
Hmmmm...mmmm....mmmmm... Not even with 10% of your BTC stash?
Well you seem to be touching on two different topics, Raja.
One topic is regarding how much of the value of your BTC stash would you be willing to trade with, and another topic is what kinds of indicators you use to decide whether to get in or out. Each of those are individualistic determinations, and I will let you know that I have a pretty decent proportion of my wealth in bitcoin as compared with my traditional investments (such as stocks and things like that), and I also have a very tiny percent into shitcoins. So only about 1% - maybe 2% upon favorable fluctuations, is in shit coins, and I find little to no value in trading any kind of shit coins.
During shitcoin pumpening season in 2017, there were guys (and maybe even a gal or two) who were putting nearly all of their bitcoins into shitcoins, and they did pretty decently (on paper) as long as they figured out a good time to get out. Some of them got burned too, because they could not figure out when to get out, so yeah, Raja, your suggestion that this is a good time to get into shitcoins based on expectations about market cap, might work out for you, but I personally believe that shit coin purging is going to continue for a quite a bit longer, but hey, I might be wrong, and surely there are a lot of arguments out there, currently, that alt coin pumpening season is coming is coming is coming, and yeah they might be right.. but then again, they might be desperately attempting to save their bag holdings of shit to stop bleeding so much, even though their bleeding is not yet close to being done.
So, yeah, during shitcoin pumpening season in 2017, you could have thrown a dart with a blindfold and two hands tied behind your back while standing on your head, and still profited. The opposite might be true, now, and if there is some shitcoin that is going to rise out of the ashes of shitcoins, that might be more of a matter of luck rather than any kind of ability to choose, especially if almost all of them continue to be purged... and the odds could be very much against you, in current times.
When it comes to shitcoins, I am nearly a total chicken shit, so likely I am not the right person to ask regarding any of them, because even during their outrageous pumpening in 2017, I remained sufficiently happy with my mediocre 78x return on bitcoin value (from 2015 to late 2017).
This is what I'm seeing on BTC dominance graph:

Seriously, IF this breaks down, go get some alts to further increase your BTC stash.
Hahahahahaha
It would not be very smart to be trading based on that kind of information or even deciding whether or not to play around with shitcoins based on that kind of information.
Hmmmm...mmmm....mmmmm... Not even with 10% of your BTC stash?
Certainly not if the current trend is due to the death of alts, which is a distinct possibility.
What he said!!!!!!!