Who create the option's strike prices?

M

medisoft

Hi! I didn't found in the Internet who (institution or person or whatever) create the different strike prices on a stock.

Why some have lot of strike prices, and others only a couple of them.

Do you know some information source to read about this?
 
Ah, I see, so if a stock is on Nasdaq, is the Nasdaq who create the options...

Is there some rules for that?

Why some stocks in very low prices (less than 2$) have options and others not?
Quote from heech:

Specified by the exchange.
More...
 
Quote from medisoft:

Hi! I didn't found in the Internet who (institution or person or whatever) create the different strike prices on a stock.

Why some have lot of strike prices, and others only a couple of them.

Do you know some information source to read about this?
More...
The exchanges.
They create rules:

i.e. for stocks under $50 strikes are spaced $1 for the front and back months. for next months they are spaced $5
For stocks over $50 strikes, they are spaced $5 for front and back months, $10 for next months, etc.

They publish the rules.
 
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