Negative funding rates on bitcoin. Bullish.

Negative funding rates on bitcoin. Bullish.

What the heck does that mean? Context?
Investors are paying a fee to short bitcoin futures to investors who are long bitcoin futures. Relatively rare, and generally a bullish sign.
I've never learned about futures, it's a bit fuzzy to me. Got brain fog today too for some reason. Someday I'll understand. I'm presently only familiar with options and equities and money.
#Bitcoin up over 40% since. Not bad.