Bitcoin has rebounded above $80,000, surprising many investors who had not significantly increased their positions despite optimistic market sentiment. Independent analyst Markus Thielen noted that Bitcoin's April performance aligned with seasonal trends, with gains surpassing historical averages. However, low trading volumes and negative funding rates suggested traders were cautious. Historically, May has been a strong month for Bitcoin, averaging a 10.3% return over the past decade, with gains in six of those years. The continuation of this seasonal support remains a key factor to watch.