Bid-Ask spread in Tos and Thinkorswim

Hi.I´m new in the forum.
I have a real trading account with Tastyworks and a paper account in TOS.
In my country I can´t open a real account with TOS.
Today I was comparing the bid-ask spread for the same strike and expiration in companies with volume like SBUX,CMCSA y VZ between Tastyworks and TOS and there was a big difference.
My paper account with TOS has 20 min delay but I was comparing the quotes taking in consideration that 20 min delay and the difference was really big.
If in TOS the difference between bid-ask was 10%,en Tastyworks was 30%...
It´s possible that these 2 brokers have different bid-ask spread or they are taking the quotes from the same source?
Can happen that difference because my account with TOS is paper and quotes are not accurate?
Thanks a lot in advance.
 
Back
Top