The profits are not this high! 2% a week is definitely possible over long term.
Optioment has a btc-pool of about 35000-40000 btc.
The profits come from arbitrage trading.

The referral bonus are paid from the reinvest. Not from the profits they gain.

Yes, they offer 4% per week till 20th of november. But therefore they use no trading bot. The 4% programm is based onl cryptotrading with traders in denmark.

I got my referral comissions paid every time. I already got my investment out, so it was definitely a good investment for me.

the programm works for more than a year now and seems to work longer.