The Alpha magnetic spectrometer

Has it reported any unexpected findings? (I know it’s early in the game)

No, it’s too early.

The AMS collaboration did present a status report at the Europhysics Conference on High-Energy Physics last week. It was mostly factual stuff about getting to where they are now, installation on the ISS, etc., but they showed some calibration and monitoring updates that suggest that things are going smoothly and that the data are rolling in.