I was thinking of investing to yolodice's bankroll if I understand it correctly for example you invested 1 Litecoin and your total share is 10% of the 10LTC total pool and if the total pool became 50LTC your share of it is still 10% so it will become 5 LTC am I right?
Your share would still be 10% IF and only IF no one else added anything to the bankroll. Since anyone can invest or withdraw their investment at any time its unlikely that your share will stay the exact same. You've also got to take into account the commission, but yes your general understanding is correct.