SPARK has a trading volume that peaked to $2B in the last 48h. What is curious is that its funding fee is as high as -0.08826% (negative values indicate short pay long traders). That is +5% a day, which is excessive unless you expect the price to sink/tank in the levels of +10-50% within a week.
$SPK is a top gainer today, and many maybe thinking of shorting it, perhaps indiscriminately because of an innate contrarian attitude towards sudden rallies in somewhat unknown issues (tokens only mentioned after they explode out of nowhere).
Regardless of how sustainable is the trend or how imminent is a correction, one should always mind whether it is worthy to act, that is, if the idea would be profitable after costs.
Before selling an futures contract consider how funding fees impact the costs of the position.
Remember that a trader going long will have to pay as much of the outstanding volume to shorts traders every 8h, and viceversa...
