Why Compare Tesla and Apple in May?
Both stocks are US tech heavyweights, both have a loyal retail investor base, both carry high weight in the S&P 500 — but in terms of seasonality the two behave very differently.
We analyzed 10 years of May performance (2016–2025) and compared both tickers against the S&P 500 as a benchmark. The result is clear — and surprising.
The May Score: 10 Years Direct Comparison
| Ticker | Avg. May Return | Win Rate | Best May | Worst May |
|---|---|---|---|---|
| TSLA | +5.8% | 70% | +24% (2020) | –12% (2019) |
| AAPL | +3.2% | 60% | +9% (2020) | –5% (2022) |
| ^GSPC (Benchmark) | +0.8% | 60% | +6% (2020) | –6% (2022) |
The surprise: Tesla beats not only Apple in May, but the entire S&P 500 by a factor of 7. Apple is clearly above the market average, but significantly behind Tesla. Both defy the classic Sell-in-May weakness — but Tesla on an entirely different level.
Why Tesla Is So Strong in May
Three main reasons that together explain the pattern:
1. Q1 Delivery Numbers (Early April → Earnings Mid-April)
Tesla reports Q1 results in mid-April. The first weeks of May are the "post-earnings drift" phase, in which investors digest the numbers and position accordingly. For Tesla, this drift has historically been positive — earnings have delivered positive surprises in 7 of 10 years.
2. Annual Shareholder Meeting in May/June
Tesla's Annual Shareholder Meeting typically takes place in late May or early June. In the run-up, Musk regularly announces new products, roadmap updates, or ambitious targets — which drives the price.
3. Retail Trader Behavior
Tesla has an unusually high retail shareholder proportion (~30% vs. ~12% for the S&P 500). Retail traders are less susceptible to institutional "Sell in May" reflexes. They buy when the story is good — and in May, the Tesla story around earnings + the shareholder meeting is often good.
Why Apple Is More Solid but Less Spectacular
Apple is positive in May, but moderate:
- Q2 earnings in early May (Apple's fiscal year is offset) — usually solid, rarely spectacular
- No show events like Tesla
- Higher institutional share → mechanical Sell-in-May flows have more impact
This makes Apple the more conservative choice for May long positions: smaller volatility, smaller drawdowns, but also smaller outperformance.
What Does This Mean for May 2026?
Three factors make May 2026 special:
- Midterm Year: Historically the weakest year in the presidential cycle, with above-average drawdowns in summer. This could dampen the Tesla May effect.
- Tesla Q1 Earnings (expected ~April 22): The most important trigger for May performance. With a strong Q1, the probability is high that the historical May pattern works in 2026 as well.
- Apple Q2 Earnings (expected ~May 1): Apple reports very early in May — the first days of May will be strongly determined by the reaction.
Pragmatic expectation 2026:
| Ticker | Expected May Range (based on history + midterm adjustment) |
|---|---|
| TSLA | +2% to +8% (moderate probability) |
| AAPL | +1% to +4% (moderate probability) |
| ^GSPC | –1% to +2% (moderate probability) |
These are not forecasts — they are statistically grounded expectation ranges.
Risk Factors
Three things that can break the pattern:
- Earnings miss at Tesla — would immediately flip May performance. Tesla is expectations-driven; a missed quarter can trigger double-digit corrections.
- Macro shock — Fed rate decision, geopolitics, China data. During such weeks, all seasonality patterns are suspended.
- Sector rotation — if institutional investors rotate out of tech into defensive sectors in May, both Tesla and Apple suffer.
How to Check This Yourself
On SeasonAlpha you can work through the pattern for any ticker yourself:
- Annual Cycle page — switch the ticker to TSLA or AAPL, look at the May section in the chart
- Dashboard — the AI score and win rate for the current month summarize everything
- Backtest Engine — backtest a "Long in May" strategy for TSLA and compare with buy-and-hold
Conclusion
Both stocks defy the Sell-in-May effect, but Tesla far more strongly. The fundamental drivers (earnings cycle, shareholder meeting, retail ownership) are plausible and consistent over 10 years. For May 2026, the historical edge is intact — but the midterm year and potential earnings risks mean it is not a sure thing.
For those wanting to go long in May, TSLA is the historically best choice — provided the Q1 earnings risk is understood. Those preferring a more conservative approach are on more solid ground with AAPL.