Technical analysis is back under the microscope because the market is offering a clean live test of what chart reading can and cannot do: after a violent midyear swing, the S&P 500 ETF SPY and Nasdaq 100 ETF QQQ are both trying to stabilize near their 50-day moving averages even as the 10-year Treasury yield holds above 5% and the Fed funds rate sits around 3.7%.
SPY and QQQ near key moving averages
That matters because this is exactly the kind of environment where traders reach for moving averages, RSI readings and MACD crossovers to separate durable trends from false breakouts. The problem, as the research suggests, is that those signals can be useful for timing but weak for forecasting — and in a fast, automated market, the gap between the two is where investors get hurt.
Sentiment IndicatorsⓘProprietary · adalytica.com · October 20, 2026
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The academic case against chartism has not gone away. A widely cited review of 95 technical-trading studies by Cheol-Ho Park and Scott H. Irwin found 56 positive results, 20 negative and 19 mixed, but the authors warned that many studies were vulnerable to data mining and understated trading costs. In plain English, it is often possible to find a pattern in past prices; it is much harder to prove that the pattern survives when money is on the line.
That distinction matters now because the big index ETFs are sending mixed messages. SPY closed at 769.64 on Oct. 20, above its 200-day moving average of 722.79 and just under its 50-day average of 767.27, with RSI at 56.7 after a sharp recovery from March’s selloff. QQQ closed at 719.49, also above its 200-day average of 674.73 but still below its 50-day average of 726.24, while RSI was only 38.3 and MACD remained negative. In other words, the charts do not point to a clean, high-conviction trend — they point to a market still sorting itself out.
For investors, that is the real lesson. Technical analysis can help define risk, spot momentum shifts and avoid buying obvious weakness too early. But it does not answer the question that matters most over full market cycles: what something is worth, whether earnings are durable and whether liquidity conditions will support the valuation. With the 10-year yield still around 5.09% and the market digesting a dramatic year in rates, the macro backdrop is doing more of the heavy lifting than any single chart pattern.
The opportunity, then, is not to dismiss technical analysis outright but to use it as a tactical tool rather than a core investment thesis. In this market, the best edge still comes from owning the right businesses and themes — AI infrastructure, power demand, industrial automation and defense spending — while using chart signals only to improve entry and exit points. That is the asymmetry investors should focus on now: fundamentals create the big win, technicals only fine-tune the trade.
| Entity | Gains | Losses |
|---|---|---|
| Fundamental investors | ▲Better long-term signal | ▼Less reliance on noisy chart cues |
| Short-term traders | ▲Timing discipline | ▼False breakouts and whipsaws |
| AI and automation platforms | ▲More data-driven tools | ▼No guarantee of better forecasts |
| Chart-only strategists | ▲Tactical relevance | ▼Academic credibility and edge |
