NBBO Quote vs Actual Price

I have been trusting the process of placing an order and receiving the amount into wallet blindly.
Today I have checked bunch of orders - placed order of selling TQQQ for a quote price of 40ish USD but actually received 35usd. This is a huge gap in quote and actual selling price. I did not take a screenshot of original order but the amount difference is 10 percent and that is unbelievable.
Then I placed a second order, quote price is 37.70 and received 36.60usd.
How messed up is this?
I’d like full explanation and backend data on this.

https://drive.google.com/drive/folders/1t_-M0pi-bWRNx0qud9Q8iv6fX0Vp5Mcp?usp=drive_link

@Dinesh_Orbit_972 responded to your tweet as well on this. Your orders were placed during pre-market extended hours trading. Extended hours bid-ask spreads are much wider than market hours. Especially with the current market scenario they are even wider. Here’s the current bid-ask for TQQQ, when I had checked last 30 mins ago it was around $35.5. It’s fluctuating a lot with how the markets are right now. Hope this helps

WhatsApp Image 2025-04-07 at 15.57.16_e05c9835

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