Up 161% in 3 weeks, why is this surging ASX tech stock tumbling today?

The All Ordinaries Index (ASX: XAO) is up a respectable 1.5% since 18 December, but one ASX tech stock has left those gains well behind.

The fast-rising stock in question is Calix Ltd (ASX: CXL).

If you’re not familiar with Calix, the company earns its keep by…