What makes me check news & filings for funding is any large single price / volume occurrence in the chart.
Mainly it's volume I'm interested in. As that is an indication of increased sentiment. And the only thing which changes sentiment quickly is normally news.
So to answer your question, I'd say check for volume spikes. Not increase but spikes. It doesn't need to include price, but usually does. If you see one with volume spikes and no price along with it. You found someone (usually in the know) loading up before news.
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