Buying treasury ETF does not reduce you buying power?

I just bought some SHY and did not see any reduction of my day trading buying power. Is this normal? Has anyone noticed this?
 
Quote from winstontj:

It's non-leveraged so check with your broker. It may be a 100% marginable security.

That's a possibility but I just want to see if others have seen this with their accounts.
 
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