While AK miner was betting last night, the total investment went from around 740 to 800 something BTC. And this was when the profits went from 65 BTC to 55 BTC, if the profit was not spread to the investors evenly and this happened. It would mean, they would be getting a smaller amount.
I don't gather stats very often - usually just once per day - so it's hard to tell what happened.
Here's what I have though:
Sun Sep 14 09:46:02 PDT 2014 Total Bets:8,481,494 Total Wagered:20,961.26123047 Total Profit: 43.45820931 Total Invested:693.96138399
Mon Sep 15 08:31:18 PDT 2014 Total Bets:8,623,039 Total Wagered:21,650.00383396 Total Profit: 0.18380911 Total Invested:725.80908230
Tue Sep 16 11:35:59 PDT 2014 Total Bets:8,801,497 Total Wagered:24,044.02811243 Total Profit:-56.28617105 Total Invested:774.09619051
Wed Sep 17 07:41:32 PDT 2014 Pocket Rockets Casino is offline temporarily while updates are being made.From Sun to Mon, profit went DOWN by 43 while investment went UP by 32.
From Mon to Tue, profit went DOWN by 56 while investment went UP by 49.
It could be people see the house losing and (incorrectly) figure that means it is due for a win, and so invest more. Or it could be due to the bug that Dean is looking into.
Edit: I should say that it's quite normal for "invested" to stay the same while profit goes up or down because often the losses come from an investor divesting and playing, and winnings are often invested back into the house. So we shouldn't expect to see the bankroll drop just because the site profit dropped - unless we know that the winning player didn't reinvest his profits.