How much ROI for staking on Binance? Are this (121k coins) were staked on binance only or this are overall staked coins on Stratis blcokchain? As this are very small amount of all tokens...
If you'll gonna stake on Binance, they are promising 1%-2% Estimated Annual Yield. As for the 121k coins, I believe these are all the staked amount within Binance's Stratis Wallet. The reason that I said that is because of the data that they (Binance) provided in the link below. Under
Historical Yield, you can see their records of staked coins with different timelines.

https://www.binance.com/nl/staking/products/6c58f886a22b4045961063a2219ac3a3
This is very low ROI if compare with other blockchain projects. In general annual ROI is 6%+. For example Tomochain has around 7-8% and rewards for masternode is around 28%