10 into 1k in a day is hypothetically possible, but only if suicidal risks are taken.
If you can double your money with a 50% chance of success and a 50% chance of losing it all, your $10 could follow this path:
$10 Start
$20 50% chance of success (1 in 2)
$40 25% chance of success (1 in 4)
$80 12.5% chance of success (1 in 8)
$160 6.15% chance of success (1 in 16)
$320 3.125% chance of success (1 in 32)
$640 1.5625% chance of success (1 in 64)
$1280 0.78124% chance of success (1 in 128)
So, if 128 traders keep splitting into 2 equal groups and taking a 50/50 chance of 100% gain or loss, 127 will fail and 1 will succeed.
Of course, the broker is grabbing spread, so doing this really means a slightly less than 50/50 chance each time. It would be simpler and easier to just get 127 of your friends together, each put $10 on the table, and then have a random drawing to see who walks away with the cash.