Hi Rosa,

Congratulations on your successful month.
I know that Leo purchase hurt, but we live and we learn, we are also motivated to regain our losses, if wins come easy they are not valued. 🤔
My monthly profit:
Purchased 300 Leo = 30 Steem
Value of air-dropped 1250 Leo = 150 Steem
Purchased 125 Miners= 900 Steem
Delegated 1000 SP to Leo voter

Profit wallet 551.793 Leo or 82.76 Steem in 21 days or 82.76 /1930 = 4.36 % ROI in 3 weeks, if you include the delegation.
Annualized return is 17x 4.36 or 74% return in investment in one year.

Of course, as you mention these returns may change over time.

I understand what you meant by delegation is a loan, you are right, it isn’t spent, but my Leo delegation rewards and delegation were very generous so hard not to include the cost to obtain them in the ROI.
I like you only calculate these three items to keep the math simple.
You have a very impressive profit of 13,000 plus Leo.
Congratulations.