One index 12-month seasonal profile with best/worst month and current bias
API · /indexseasonality-api
Stock Index Seasonality API
healthy
3,095 Subscribers
The calendar patterns equity traders position around — "Sell in May", the Santa Claus rally, the September swoon — computed live from ~10 years of Yahoo Finance monthly data across the world's major stock indices (no key, nothing stored). Equities have well-documented seasonal tendencies, and this measures them directly: for each index it takes a decade of monthly returns, groups them by calendar month, and returns the average return in each of the twelve months, the share of years that month was positive (the win rate), and the historically strongest and weakest months. The seasonality endpoint returns one index's full 12-month seasonal profile plus the current month's historical bias. The month endpoint flips it around: for a calendar month it ranks every index by its historical average return, so you can see which markets are seasonally strong or weak right now. The indices endpoint lists what is covered, from the S&P 500, Nasdaq, Dow and Russell to the DAX, FTSE, CAC, Euro Stoxx, Nikkei and Hang Seng. The equity-index seasonality / calendar-pattern cut — distinct from the FX, commodity and crypto seasonality APIs, the index price feed and the constituent APIs.
api.oanor.com/indexseasonality-api
API health
healthy- Uptime
- 100.00%
- Server probes · 24h
- Avg latency
- 156 ms
- Server probes · 24h
- Subscribers
- 3,095
- active
- Total calls
- 84
- last 7 days
Pricing
Pick a tier — billed monthly, cancel anytime.
Free
Free
- 840 calls / month
- 2 requests / second
- Hard cap (429 above quota, no overage)
- 840 calls/month
- 2 req/sec
- 12-month index seasonal profiles
- Best/worst month + win rates
Starter
€10.42 /month
- 19,200 calls / month
- 6 requests / second
- Hard cap (429 above quota, no overage)
- 19.2k calls/month
- 6 req/sec
- Month-rank across world indices
- Email support
Pro
€31.44 /month
- 93,500 calls / month
- 16 requests / second
- Hard cap (429 above quota, no overage)
- 93.5k calls/month
- 16 req/sec
- Production seasonal signals
- Priority support
Business
€72.80 /month
- 512,000 calls / month
- 40 requests / second
- Hard cap (429 above quota, no overage)
- 512k calls/month
- 40 req/sec
- High-volume seasonality feed
- Dedicated support
Built by
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api.oanor.com/mexico-stock-api
Frequently asked questions
Quick answers about pricing, quotas, and integration.
How do I get an API key for Stock Index Seasonality API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Stock Index Seasonality API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Stock Index Seasonality API?
Free tier allows 1 request per second. Paid plans scale up to 50 requests per second on the Mega tier. Hard limits return HTTP 429 above the quota — no surprise overage charges.
How much does Stock Index Seasonality API cost?
Stock Index Seasonality API has a free tier with 100 calls / month. Paid plans start at €10.42 / month with higher quotas and faster rate limits.
Can I cancel my subscription anytime?
Yes. Plans are billed monthly and you can cancel anytime from your billing dashboard. No long-term contracts and no cancellation fee.
Is Stock Index Seasonality API GDPR-compliant?
All requests to Stock Index Seasonality API go through our EU-based gateway. Your upstream API key never leaves our server and no personal data is shared with the upstream provider beyond the request you send.
Pick an endpoint from the list on the left to see its details and try it.
Code snippets
Sign up to get an API key, then call any path under your slug.
curl https://api.oanor.com/indexseasonality-api/SOME_PATH \
-H "x-oanor-key: oanor_test_..."const res = await fetch("https://api.oanor.com/indexseasonality-api/SOME_PATH", {
headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();$ch = curl_init("https://api.oanor.com/indexseasonality-api/SOME_PATH");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
$response = curl_exec($ch);import requests
r = requests.get(
"https://api.oanor.com/indexseasonality-api/SOME_PATH",
headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())Ratings
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