---
title: "Bank of America's Stock Market Signal Flashes Warning"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/296644314.md"
description: "Bank of America's Bull & Bear Indicator rose to 9.5, triggering a sell signal for the S&P 500 due to extreme bullish positioning and crowded trades. This suggests increased risk of a market pullback over the next one to three months. While not a precise timing tool, the contrarian indicator warns that overwhelming optimism may lead to unwinding if economic data disappoints. Investors are advised to monitor equity flows, hedge-fund exposure, and earnings expectations for signs of volatility."
datetime: "2026-08-21T18:29:55.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/296644314.md)
  - [en](https://longbridge.com/en/news/296644314.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/296644314.md)
generator: "portal-rs"
---

# Bank of America's Stock Market Signal Flashes Warning

Bank of America is warning that investor optimism has moved into dangerous territory, with its closely watched Bull & Bear Indicator rising to 9.5 and flashing a fresh sell signal for the S&P 500. For investors in broad-market ETFs such as SPDR S&P 500 ETF Trust (SPY) and Vanguard S&P 500 ETF (VOO), the signal suggests positioning has become crowded enough to raise the risk of a pullback over the next one to three months.

BofA's indicator climbed from 9.3 and now sits firmly in its Extreme Bullish zone. A reading above 8.0 triggers a sell signal, while a reading below 2.0 signals a potential buying opportunity.

The latest move was driven by strong stock-market breadth and increasingly bullish positioning across S&P 500 and gold futures.

Fund-manager positioning reached the 99th percentile, while equity flows were at the 93rd percentile and hedge-fund positioning at the 83rd percentile. Credit-market technicals were also elevated at the 77th percentile.

The signal is designed to be contrarian. When investors become overwhelmingly bullish, BofA sees less incremental buying power and a greater chance that crowded trades unwind if economic data, earnings or policy expectations disappoint.

Still, the indicator is not a precise market-timing tool.

BofA's previous sell signal was triggered on May 26. Since then, the S&P 500 has still gained 1.6%, while the MSCI ACWI has advanced 1.3%.

**Investor Takeaway**

The key risk now is not simply high valuations, but crowded positioning.

Investors should watch equity-fund flows, hedge-fund exposure, market breadth and any deterioration in earnings expectations. A sudden rise in Treasury yields, hotter inflation data or weaker corporate guidance could turn today's extreme bullishness into faster downside.

At the same time, the May signal is a reminder not to treat the indicator as an automatic exit trigger.

For SPY and VOO holders, the more useful takeaway may be to expect higher volatility and lower near-term upside asymmetry while sentiment remains stretched. If BofA's gauge stays above 8.0 and market breadth begins weakening, the sell signal would become harder to dismiss.

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---
> **Disclaimer: This article is for reference only and does not constitute any investment advice.**