One index 12-month seasonal profile with best/worst month and current bias

Extraits de code

curl "https://api.oanor.com/indexseasonality-api/v1/seasonality" \
  -H "x-oanor-key: oanor_test_..."

await fetch("https://api.oanor.com/indexseasonality-api/v1/seasonality", {
  headers: { "x-oanor-key": "oanor_test_..." }
});

$ch = curl_init("https://api.oanor.com/indexseasonality-api/v1/seasonality");
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$out = curl_exec($ch);

import requests
requests.get(
    "https://api.oanor.com/indexseasonality-api/v1/seasonality",
    headers={"x-oanor-key": "oanor_test_..."}
)

Exemple de réponse

Une réponse réelle de ce endpoint, capturée lors du dernier contrôle de santé.

{
    "data": {
        "name": "S&P 500",
        "note": "Average month-over-month return in each calendar month over ~10 years, with win_rate_pct (share of years that month was positive) and the sample size (years). Captures effects like Sell-in-May and the year-end rally. Seasonal tendencies are statistical, not guarantees. Not financial advice.",
        "index": "sp500",
        "months": [
            {
                "month": "January",
                "years": 10,
                "month_num": 1,
                "win_rate_pct": 70,
                "avg_return_pct": 2.11
            },
            {
                "month": "February",
                "years": 10,
                "month_num": 2,
                "win_rate_pct": 40,
                "avg_return_pct": -0.4
            },
            {
                "month": "March",
                "years": 10,
                "month_num": 3,
                "win_rate_pct": 50,
                "avg_return_pct": -1.22
            },
            {
                "month": "April",
                "years": 10,
                "month_num": 4,
                "win_rate_pct": 70,
                "avg_return_pct": 2.2
            },
            {
                "month": "May",
                "years": 10,
                "month_num": 5,
                "win_rate_pct": 90,
                "avg_return_pct": 2.02
            },
            {
                "month": "June",
                "years": 11,
                "month_num": 6,
                "win_rate_pct": 73,
                "avg_return_pct": 1.18
            },
            {
                "month": "July",
                "years": 9,
                "month_num": 7,
                "win_rate_pct": 100,
                "avg_return_pct": 3.51
            },
            {
                "month": "August",
                "years": 10,
                "month_num": 8,
                "win_rate_pct": 70,
                "avg_return_pct": 1.06
            },
            {
                "month": "September",
                "years": 10,
                "month_num": 9,
                "win_rate_pct": 50,
                "avg_return_pct": -1.61
            },
            {
                "month": "October",
                "years": 10,
                "month_num": 10,
                "win_rate_pct": 50,
                "avg_return_pct": 0.79
            },
            {
                "month": "November",
                "years": 10,
                "month_num": 11,
                "win_rate_pct": 90,
                "avg_return_pct": 4.31
            },
            {
                "month": "December",
                "years": 10,
                "month_num": 12,
                "win_rate_pct": 60,
                "avg_return_pct": -0.23
            }
        ],
        "region": "us",
        "source": "Yahoo Finance",
        "best_month": {
            "month": "November",
            "win_rate_pct": 90,
            "avg_return_pct": 4.31

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