See whether public conversation about large US equities is turning bullish or bearish, then compare that tone with a market-behaviour reading. Nebula resolves the benchmark to its native SPX index identity rather than relabelling SPY as the index. S&P 500’s August 27, 2026 reading is currently 51 — Greed.
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SPX
S&P 500A useful index reading preserves the benchmark identity, separates tone from attention, and checks whether the move is broad or concentrated.
Nebula maps this tool to the canonical SPX index subject. SPY remains a separate investable ETF, so its price, flows, and conversation are not silently presented as the S&P 500 itself.
The score measures language attached to the index subject. It does not claim that every post about an S&P 500 constituent expresses a view on the whole benchmark.
Rising index sentiment is more convincing when strength extends beyond a small group of heavily weighted stocks. Compare SPX tone with constituent sentiment and market breadth before drawing a conclusion.
VIX, options positioning, price momentum, and fund flows can add context, but none is a substitute for what market participants are actually saying. Keep each signal in its own lane.
Sentiment can lead, confirm, or lag an index move. Treat a sharp change as a reason to inspect narratives, sector leadership, macro events, and the source conversation rather than as an automatic trade.
Read the complete S&P 500 sentiment guide for the distinction between SPX, SPY, constituent weighting, and breadth. The stock-index sentiment workflow explains how to align windows and evidence across benchmarks. To inspect the stocks underneath the index, compare this reading with the stock sentiment tool and stock mindshare leaderboard.
Continue from SPX sentiment to the full index research view.
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