It almost looks like a data glitch to me, since the value before and after the spike are almost exactly the same, but I'm wondering if it's something more significant.
I occasionally see strange anomalies like this when I check a stock and it seems strange.
Also in this table here from NASDAQ. That page is updated dynamically, so here is a screenshot of the current data:
If it's a data glitch, it must be in the primary data source that everyone else relies on.