Can We Trust the US-Iran Ceasefire Rally? What Technicals, Sentiment, and Seasonality Reveal

The S&P 500's 38.2% Fibonacci retracement level aligns precisely with 5,630. This level served as support on the way down and resistance on the way up. Right now, the index is above it.

After the US-Iran ceasefire announcement, markets surged. Both the Nasdaq and S&P 500 opened with strong gaps higher, and crypto rallied in lockstep. The real question is whether this move can be trusted.

My answer is a conditional yes.

The Technical Breakout Came First

Here's what's interesting about the charts. The rally didn't start because of the ceasefire news.

The Nasdaq had already broken above its multi-week downtrend line. Buyers stepped in before the headline dropped. This suggests that the directional shift was already underway inside the market — not a simple news reaction.

The S&P 500 tells the same story. The 5,630 line — a level that acted as both support and resistance in previous swings — broke to the upside. This level coincides precisely with the 38.2% Fibonacci retracement, which matters because institutional traders treat it as the first checkpoint for pullback entries after a trend shift.

The scenario I'm watching is straightforward. If we get a temporary pullback to that 38.2% retracement from current levels, that could be a buying opportunity. Setting a stop-loss below the 61.8% retracement creates a risk-reward ratio that looks quite compelling.

Sentiment Screaming a Contrarian Signal

Price isn't the only thing I've been studying.

The AAII Investor Sentiment Survey captured a notable shift. During the March 30–April 5 week, bearish sentiment hit an extreme — the most pessimistic reading in six months, arguably twelve.

Now? Bearish sentiment is cooling, and bullish sentiment has ticked up modestly.

The backtesting data tells a clear story. When bearish sentiment exceeds 35%, the S&P 500's forward returns — across 1-day, 1-week, 1-month, 6-month, and 12-month horizons — tend to beat the long-term average. The S&P's typical annual return runs around 9–10%. Entries made during peak pessimism have historically exceeded that.

Extreme bearishness has historically been a buy signal, not a sell signal.

Seasonality Adds Tailwinds

Is April historically a good month? Looking at the past decade's data, February and March were the toughest stretch. We've cleared that window.

Summer — May through July — has actually delivered solid performance over the last ten years. The old "Sell in May and go away" adage would have been a losing strategy in the past decade. Investors who exited during summer missed some of the year's strongest gains.

There is one caveat this year: midterm elections. Markets historically see elevated volatility during midterm years due to heightened uncertainty. Seasonality alone doesn't justify an all-in bet, but combined with the technical breakout and sentiment reversal, it adds directional support.

Risks and the Bear Case

There's a reason I'm not shouting "full bull."

First, the ceasefire could collapse. Both sides are signaling de-escalation, but the Middle East situation can deteriorate at any moment. This isn't a prediction — it's a possibility that has to stay in the equation.

Second, oil remains above $100 per barrel. The ceasefire announcement didn't bring it down. If elevated oil persists, inflation concerns resurface, pushing the prospect of Fed rate cuts further away.

Third, PCE inflation printed at 3%, still far from the Fed's 2% target. It's natural to question rally durability when inflation remains this sticky.

So my positioning is "slightly bullish." Not all-in. If we get a pullback, I'll selectively pick up names from my watchlist in small sizes, but leveraging up or concentrating bets isn't appropriate in this environment.

The technical breakout is here, sentiment supports a contrarian buy case, and seasonality is favorable. But macro headwinds from oil and inflation haven't disappeared. Waiting patiently for a retracement is the most rational approach right now.

FAQ

Q: Why is the 38.2% Fibonacci retracement level significant? A: It's the first retracement level institutional traders examine after a trend reversal. Historically, buying interest tends to emerge at this point, and confidence increases when it overlaps with prior support/resistance zones.

Q: Why is the AAII Sentiment Survey used as a contrarian indicator? A: When individual investor sentiment reaches extremes, positioning in that direction is typically overcrowded. Once selling pressure is exhausted, reversals become more likely. The S&P 500 outperforming its long-term average when bearishness exceeds 35% reflects this dynamic.

Q: Is the "Sell in May" strategy truly dead? A: For the past decade, yes. But seasonality represents an average tendency — external shocks in any given year can override it. Considering this year's midterm election variable, it's not a strategy to follow blindly.