Just been looking at the Altcoin Season Index and it's sitting at 37 right now. For those not familiar, this metric from CoinMarketCap basically tells you how many of the top 100 cryptos are outperforming Bitcoin over a 90-day window. They exclude stablecoins to focus on actual speculative assets.

So what does 37 actually mean? It's pretty straightforward - we're firmly in Bitcoin dominance territory. The index hits 75 or higher when you've got a real altcoin season happening, where the majority of alts are beating BTC. At 37, we're nowhere near that. It means capital is still concentrated, people are being cautious, and Bitcoin's the one leading the charge.

Historically, altcoin season periods like 2017-2018 and most of 2021 saw this index running well above 80. The rotations were real back then. Right now, we're in that moderate dominance phase where Bitcoin remains the focus while alts lag behind.

What's interesting is that this metric isn't really predictive - it's more of a confirmation tool. When you see altcoin season conditions starting to shift, the index will show it, but it won't tell you exactly when. That said, watching for a sustained move above 50 would be the first real signal that sentiment's changing.

For traders, this suggests broad altcoin momentum plays might still be premature. But it's worth monitoring individual alts that are already outperforming despite these conditions - those could be early movers for the next cycle.