95 % Bitcoin
3 % Bitcoin Cash
1 % Litecoin
1 % Ether

Math, there are some other strong forward thinking and developing alt coins, the strongest will survive and although not the Bitcoin breed, will have some great assets and services, also they are really low now - the right ones to buy...

Right now :
Bitcoin around 20%
Ethereum over 50%
ETC  = 20%
CSNO and many other tokens around 10%.

But as I mostly do short term trading, I keep changing my holdings between alts and bitcoin. When bitcoin will stabilize I will go bull again on bitcoin.

i thu k that there can be a case that van be made for all the cryptocurrencies here. however it goes also to saying that there is a big gap on btc and all that is below it. It is the most acknowledged and widely used and no secret that it is also one of the most longer here

Nothing can replace bitcoin in future because it is progressing with high speed and people are favoring it, yes it is possible for other currencies to give it a hard competition and be in market for long but they don't have such good plans for its investors as bitcoin have, neither they are this much promising letting their investors to be rich in such short time. My personal choice is bitcoin and will not get risk by buying digital currency other than bitcoin.

I hold almost all of them but the majority of my portfolio is in bitcoin which is the main out of the 3 so to sum the up 60% bitcoin, 20% ethereum, 15% Bitcoin cash and 5% Litecoin but that alloted percentage computation is for the 4 of them i have a lot on my portfolio like dash, monero etc and etheruem tokens also invested on some ICO if they are good and authentic.