S&P 500 Index (^GSPC) Anomalies

Check historical price trends and seasonality for S&P 500 Index (^GSPC).

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S&P 500 Index (^GSPC) average YTD return over the past 10 years is +13.92%.

Over the past 10 years, the return for the specified period (May 15 for 30 days) is +2.94%.

7 wins 0 losses with a win rate of 100.00%.

AI Analysis (Past 10 Years YTD)

S&P 500 Index (^GSPC) Anomaly Analysis

1) Overview:

The S&P 500 index typically experiences a strong bullish phase from February through July, starting with a gain of +1.8% by February 1st and peaking around +8.8% by July 31st. After this peak, the index tends to consolidate through October, before entering another bullish phase in November. The year typically concludes with significant gains in December, reaching +14.3% by December 13th and remaining high at +13.9% by December 31st.

2) Buy-the-dip points:

Historically, a potential buying opportunity arises around March 23rd, where the index shows an average dip of -1.2%. This pullback in late March is followed by a recovery throughout April, presenting a chance to capitalize on the rebound.

3) Summary:

Based on the 10-year average seasonality, consider initiating long positions after the dip around March 23rd to take advantage of the subsequent rally. The strongest seasonal strength appears in December, particularly around December 13th and December 31st, suggesting that holding positions through year-end could be beneficial.

Disclaimer: This analysis is generated by AI (Gemini) based on historical statistical trends. It does not guarantee future performance. Investment decisions are your own responsibility.
YearStart DateStart PriceEnd DateEnd PriceReturnRate (%)
2025 2025-05-15 5,916.9302 2025-06-13 5,976.9702 60.0400 1.01
2024 2024-05-15 5,308.1499 2024-06-13 5,433.7402 125.5903 2.37
2023 2023-05-15 4,136.2798 2023-06-13 4,369.0098 232.7300 5.63
2020 2020-05-15 2,863.7000 2020-06-13 3,041.3101 177.6101 6.20
2019 2019-05-15 2,850.9600 2019-06-13 2,891.6399 40.6799 1.43
2018 2018-05-15 2,711.4500 2018-06-13 2,775.6299 64.1799 2.37
2017 2017-05-15 2,402.3201 2017-06-13 2,440.3501 38.0300 1.58
Avg 3,741.3986 3,846.9500 105.55 2.94
365 Days (Prev Close Change) Average (Past 10 Years) [Horz=Month / Vert=Day]
Negative Zero/Flat Positive ※ Change from prev day close. Excl Feb 29.
Mode:
Day \ Month Jan Total +1.41% Feb Total -0.48% Mar Total +0.47% Apr Total +1.19% May Total +1.50% Jun Total +1.86% Jul Total +3.35% Aug Total +0.96% Sep Total -1.34% Oct Total +0.68% Nov Total +4.10% Dec Total +0.04%
1 Avg +0.08% 0.00% +0.46% +0.40% -0.09% -0.29% +0.25% +0.32% -0.44% +0.15% +0.02% +0.27% -0.06%
2 Avg +0.11% +0.10% +0.09% +0.67% 0.00% +0.18% +0.53% +0.29% -0.49% +0.05% -0.23% -0.03% +0.11%
3 Avg -0.07% -0.10% -0.22% -0.44% -0.46% +0.11% -0.05% +0.20% +0.34% -0.58% +0.18% +0.23% -0.01%
4 Avg +0.12% +0.18% +0.47% +0.07% -0.59% +0.28% +0.33% 0.00% +0.10% +0.08% +0.37% +0.27% -0.17%
5 Avg -0.01% -0.14% -0.39% -0.04% +0.09% -0.10% +0.38% +0.06% -0.45% -0.08% +0.30% +0.44% -0.15%
6 Avg +0.12% +0.27% +0.16% -0.36% +0.54% -0.03% +0.32% +0.14% +0.42% -0.25% -0.05% +0.24% +0.07%
7 Avg +0.02% -0.20% -0.12% -0.40% -0.11% +0.12% +0.16% +0.02% +0.06% +0.09% -0.23% +0.67% +0.18%
8 Avg +0.07% +0.27% -0.45% -0.29% +0.23% +0.21% +0.14% +0.09% +0.41% -0.23% +0.06% +0.17% +0.22%
9 Avg +0.05% +0.06% +0.30% -0.31% +1.16% -0.26% -0.34% +0.22% -0.16% +0.20% +0.25% -0.23% -0.27%
10 Avg +0.04% -0.04% +0.01% +0.13% -0.22% +0.25% -0.26% +0.35% +0.01% -0.16% -0.51% +0.78% +0.13%
11 Avg -0.07% +0.25% -0.27% -0.29% -0.01% -0.37% -0.56% -0.19% -0.05% +0.48% -0.23% +0.17% +0.19%
12 Avg +0.11% +0.20% +0.54% -0.76% -0.02% -0.14% +0.33% +0.35% +0.34% +0.33% +0.18% -0.23% +0.17%
13 Avg +0.05% -0.23% +0.17% +0.76% +0.18% -0.07% -0.44% -0.06% +0.31% -0.44% +0.31% -0.03% +0.18%
14 Avg +0.07% +0.08% +0.22% +0.16% +0.20% +0.41% -0.03% +0.22% -0.03% +0.17% -0.08% -0.06% -0.47%
15 Avg +0.15% +0.02% +0.52% +0.25% -0.26% +0.27% +0.28% +0.23% +0.03% +0.07% +0.06% +0.17% +0.16%
16 Avg -0.04% +0.01% -0.02% -0.76% -0.06% +0.17% -0.10% -0.06% +0.17% -0.20% +0.30% +0.17% -0.11%
17 Avg +0.04% +0.20% -0.06% +0.76% +0.43% -0.04% -0.05% -0.04% -0.30% -0.21% +0.32% -0.16% -0.40%
18 Avg -0.10% -0.12% -0.17% -0.51% +0.04% -0.07% -0.03% 0.00% -0.06% -0.01% -0.06% -0.10% -0.16%
19 Avg -0.01% +0.04% +0.07% +0.06% -0.02% -0.17% +0.02% +0.01% -0.02% +0.29% -0.22% -0.07% -0.07%
20 Avg -0.09% +0.13% -0.18% -0.31% -0.31% +0.24% +0.01% +0.26% +0.01% -0.36% +0.02% -0.36% -0.22%
21 Avg -0.01% -0.07% -0.49% +0.14% -0.67% -0.06% +0.26% +0.18% +0.22% -0.38% +0.30% +0.25% +0.18%
22 Avg +0.06% +0.20% +0.22% -0.43% +0.21% -0.01% +0.14% +0.17% -0.09% +0.21% -0.10% +0.22% -0.01%
23 Avg +0.00% +0.23% -0.07% -0.75% +0.48% -0.16% +0.30% +0.13% 0.00% -0.37% -0.08% +0.07% +0.27%
24 Avg +0.12% -0.02% -0.17% +1.25% +0.31% +0.17% -0.19% -0.16% 0.00% -0.08% +0.07% +0.37% -0.10%
25 Avg +0.08% -0.02% -0.24% +0.20% -0.02% +0.25% -0.05% +0.07% +0.23% +0.16% +0.21% +0.22% 0.00%
26 Avg +0.10% +0.33% -0.03% +0.99% -0.03% +0.47% -0.18% +0.07% -0.19% -0.29% -0.54% +0.08% +0.57%
27 Avg -0.04% -0.71% -0.67% -0.50% +0.39% +0.65% -0.16% +0.14% +0.19% +0.02% -0.02% +0.04% +0.12%
28 Avg +0.10% +0.51% -0.16% -0.05% +0.16% -0.15% +0.16% +0.16% +0.17% +0.28% +0.07% +0.18% -0.12%
29 Avg +0.11% -0.01% - +0.56% +0.02% -0.17% +0.28% +0.29% +0.26% -0.30% +0.08% +0.11% +0.05%
30 Avg +0.02% -0.07% - +0.37% -0.38% +0.08% +0.41% -0.24% +0.06% +0.03% +0.02% +0.25% -0.27%
31 Avg -0.05% +0.03% - -0.12% - -0.26% - +0.15% -0.09% - -0.08% - +0.04%

Past 10 Years 1-Month [May 15 - Jun 13] Return Ranking

Rank Stock Avg Return (%) Wins Losses