Lately I've seen a lot of people talking about how ETF fund flows and US stock market sentiment correlate with crypto prices. Honestly, I was pretty hyped at first too, almost ready to put on-chain data aside. But after thinking it over, I decided to come back to it.

Take that indexer and Subgraph for example. Sometimes the data suddenly lags—it's not your home internet, it's the RPC getting rate-limited. The node can't handle the query volume, so the Subgraph synchronization falls behind. The position changes and liquidation data you see are actually from a few minutes ago. If you only look at on-chain data at that point, thinking you're being objective, you're actually looking at a stale snapshot.

The same goes for sentiment indicators like Twitter trends and funding rates—the lag is worse than you'd think. Last time a pool was liquidated, the on-chain orders were already placed, but the sentiment data was still showing "bullish." If you only trust one side, it's easy to get caught off guard.

So now my approach is pretty boring: take a quick look on-chain, glance at sentiment, and when the two don't match... just don't act. Anyway, my portfolio still has hedge positions, so stalling for a bit won't cause a collapse.