Advantages on Halloween? For those who enter trading contests... or other contests then it will get a prize while the correlation with bitcoin may have little effect, in this Halloween party may be partially celebrated as a bitcoin party in its carving.
Trading contests? You mean like the ones the DEX and exchanges like to host? You know only the wash traders win right? And you lose hundreds to gain a bit, thousands to gain a bit more. Its only worthwhile or even possible when you have a ton of cash to burn.
Show me one guy in this forum who ever made money in a trading contest
