Alphabet: seasonality, event history and insights
In October, Alphabet has averaged +8.69% and risen in 73% of 22 years (2004 to 2025). We rate the October pattern as strong.
Last close 347.68 on October 6, 2026: +0.35% on the day, +11.30% this year, +1.05% so far in October.
Month by month
| Month | Average | Median | Up years | Last 10 years | Best | Worst | Years | Pattern |
|---|---|---|---|---|---|---|---|---|
| January | +2.28% | +4.28% | 77% | +5.62% | +12.23% | -18.39% | 22 | weak |
| February | -2.96% | -0.88% | 36% | -3.40% | +10.65% | -16.54% | 22 | moderate |
| March | +0.12% | +1.14% | 55% | -0.21% | +15.18% | -13.24% | 22 | no clear pattern |
| April | +5.29% | +3.18% | 64% | +6.90% | +33.82% | -17.95% | 22 | moderate |
| May | +3.28% | +5.50% | 64% | +4.08% | +26.03% | -11.04% | 22 | moderate |
| June | -0.40% | -0.55% | 45% | -0.71% | +12.78% | -10.14% | 22 | no clear pattern |
| July | +5.12% | +5.92% | 68% | +5.85% | +21.75% | -10.01% | 22 | strong |
| August | -0.07% | -0.40% | 45% | +1.32% | +10.95% | -10.39% | 22 | no clear pattern |
| September | +2.65% | +1.80% | 65% | -1.33% | +26.60% | -13.55% | 23 | no clear pattern |
| October | +8.69% | +9.20% | 73% | +3.37% | +47.10% | -10.28% | 22 | strong |
| November | +1.08% | +1.76% | 64% | +3.21% | +13.87% | -18.48% | 22 | no clear pattern |
| December | +1.83% | +2.11% | 68% | +0.54% | +12.17% | -12.63% | 22 | strong |
What drives Alphabet
- Search and YouTube advertising, which follow the ad-budget cycle with a strong fourth quarter.
- Google Cloud growth, AI competition in search and antitrust rulings.
Sell in May for Alphabet
From 2005 to 2025, the November to April half averaged +5.46% and the May to October half +19.05%. The winter half did better in 24% of 21 years. Compare all markets.
How Alphabet reacts to its earnings
Across 44 results announcements since 2015, Alphabet moved +1.12% on average over the two sessions around the release, rising 59% of the time. The typical move, up or down, was 4.87%, and the average move relative to the S&P 500 was +1.05%. The largest was +10.01% on April 29, 2026.
| Results filed | Two-day move | Versus S&P 500 | 20 days later |
|---|---|---|---|
| July 22, 2026 | -8.49% | -7.15% | -0.70% |
| April 29, 2026 | +10.01% | +9.03% | +11.54% |
| February 4, 2026 | -2.49% | -0.76% | -11.43% |
| October 29, 2025 | +5.24% | +6.23% | +19.62% |
| July 23, 2025 | +0.43% | -0.42% | +4.17% |
| April 24, 2025 | +4.25% | +1.47% | +9.99% |
| February 4, 2025 | -4.92% | -6.04% | -14.02% |
| October 29, 2024 | +4.64% | +4.81% | +1.44% |
| July 23, 2024 | -4.98% | -2.51% | -7.98% |
| April 25, 2024 | +8.06% | +7.50% | +9.06% |
| January 30, 2024 | -8.74% | -7.07% | -11.16% |
| October 24, 2023 | -7.98% | -7.26% | +0.34% |
Year by year
Latest insights on Alphabet
Questions
What is the best month for Alphabet?
Since 2004, October has had the highest average move for Alphabet at +8.69%, rising in 73% of 22 years. January has the highest share of positive years (77%).
What is the worst month for Alphabet?
February has had the weakest average move at -2.96%, rising in 36% of 22 years.
How does Alphabet usually do in October?
Alphabet has averaged +8.69% in October (median +9.20%), rising in 73% of 22 years. We rate the pattern as strong.
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