Just got the dreaded SSSS on my ticket back to the U.S.

Backstory: I booked an award one-way ticket to Europe and bought an open-jaw ticket with a one-night layover in JFK. I'd fly the next day to Asia.

Do you think the SSSS is because I have a "one-way" ticket back to the U.S. even though it's technically a ticket with a stopover?

I'm hoping this issue won't give me headaches down the road in terms of GE and TSA Precheck. I'm a U.S. citizen with GE.

Anyone experience this before? Any thoughts on this issue?