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API · /sectorcorrelation-api

Stock Sector Correlation Matrix API

healthy 3,985 Subscribers

How the eleven S&P 500 sectors move together, computed live from Yahoo Finance via the SPDR sector ETFs (no key, nothing stored). Sector correlation is the heart of equity diversification and rotation: defensives (utilities, staples, health care) and cyclicals (tech, discretionary, financials, energy) cluster differently, and when correlations rise the whole market is moving as one (risk-on/risk-off), while a spread of correlations means stock-picking and rotation are rewarded. The matrix endpoint returns the full pairwise return-correlation matrix across all eleven sectors with the most- and least-correlated sector pairs. The sector endpoint returns one sector's correlation to every other, ranked, plus its beta to the S&P 500 (how much it amplifies the market). The sectors endpoint lists what is covered. The equity sector correlation / rotation cut — distinct from the cross-asset correlation matrix (asset classes, not sectors), the crypto and currency correlation APIs (other markets) and the sector price/performance feed. It answers which sectors are the same bet and which diversify, within the stock market.

#equities #sectors #correlation #rotation #diversification #trading #beta #sp500 #matrix #markets
api.oanor.com/sectorcorrelation-api
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Machine-readable spec so AI agents can integrate this API.

/api/sectorcorrelation-api/openapi.json
/api/sectorcorrelation-api/llms.txt

Discovery: GET /api/index.json lists every API.

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
198 ms
Server probes · 24h
Subscribers
3,985
active
Total calls
0
last 7 days
status Full status page → · 4 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 720 calls / month
  • 2 requests / second
  • Hard cap (429 above quota, no overage)
  • 720 calls/month
  • 2 req/sec
  • Full 11x11 sector matrix + per-sector
  • Beta to S&P 500
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Starter

€10.86 /month

  • 16,700 calls / month
  • 6 requests / second
  • Hard cap (429 above quota, no overage)
  • 16.7k calls/month
  • 6 req/sec
  • Most/least correlated + diversifiers
  • Email support
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Pro

€32.66 /month

  • 87,500 calls / month
  • 16 requests / second
  • Hard cap (429 above quota, no overage)
  • 87.5k calls/month
  • 16 req/sec
  • Production rotation analytics
  • Priority support
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Business

€74.80 /month

  • 476,000 calls / month
  • 40 requests / second
  • Hard cap (429 above quota, no overage)
  • 476k calls/month
  • 40 req/sec
  • High-volume correlation feed
  • Dedicated support
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Stock Index Seasonality API

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

US Equity Market Breadth API

How broad the US stock market's move really is under the surface, computed live from Yahoo Finance across a large-cap universe (no key, nothing stored). The S&P 500 can be dragged up by a handful of megacaps while most stocks fall; breadth tells you how many stocks are actually participating. The breadth endpoint scans a ~50-name large-cap universe spanning every sector and returns the share trading above their 20-, 50- and 200-day moving averages (the classic participation gauges), the advancers versus decliners on the day, the advance/decline ratio, the average and median daily change and a regime label (broad strength, mixed or broad weakness). The components endpoint returns the per-stock table behind it — each name's price, daily change and whether it is above each moving average — so you can see exactly which stocks are carrying or dragging the market. The constituents endpoint lists the universe. The equity market-internals / breadth cut — distinct from the crypto-breadth API (which scans coins), the single-quote, index-constituent and movers APIs. It answers whether a rally is broad or narrow, not how one stock is doing.

api.oanor.com/equitybreadth-api

Earnings Surprise (Beat/Miss) API

Live earnings beat/miss track record for US stocks from Nasdaq — no key, nothing stored. The "does it beat the street" view of a stock: how its actual reported EPS has compared to the analyst consensus over the recent quarters, distinct from the earnings-calendar (upcoming dates), analyst (forward estimates) and financials APIs in the catalogue. The surprises endpoint returns the recent quarters with the actual EPS, the consensus forecast, the dollar and percent surprise, and whether the quarter was a beat, a miss or in line. The scorecard endpoint computes the track record — how many of the recent quarters beat, the beat rate, the average surprise, the latest result and the current beat/miss streak — so you can gauge how reliably a company tops expectations. Build earnings-quality screeners, beat-streak scanners, post-earnings-drift signals and event-driven trading tools on top of real Nasdaq earnings-surprise data. The surprise is the actual reported EPS versus the analyst consensus for the quarter; a positive percent surprise is a beat. Look up any US stock by its ticker.

api.oanor.com/earningssurprise-api

Stock Price History (OHLC) API

Live historical daily prices (OHLC) for US stocks from Nasdaq — no key, nothing stored. The price-history-and-charting view of a stock: the daily open, high, low, close and volume going back months or years, distinct from the live-quote, movers, earnings and analyst APIs in the catalogue. The history endpoint returns the daily OHLC time series over a chosen range — 1 month to 5 years, or explicit from/to dates — ready to plot or backtest. The stats endpoint computes the period statistics from that series: the period high and low, the latest close, the total return over the period, the average daily volume and the annualised volatility (from daily log returns). Build charting widgets, backtesting tools, technical-analysis pipelines, performance trackers and risk models on top of real Nasdaq price history. Look up any US stock by its ticker (symbol=AAPL) and a range (1m, 3m, 6m, 1y, 2y, 5y) or explicit from=YYYY-MM-DD and to=YYYY-MM-DD; prices and volumes are returned as clean numbers.

api.oanor.com/stockhistory-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Stock Sector Correlation Matrix API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Stock Sector Correlation Matrix API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Stock Sector Correlation Matrix 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 Sector Correlation Matrix API cost?
Stock Sector Correlation Matrix API has a free tier with 100 calls / month. Paid plans start at €10.86 / 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 Sector Correlation Matrix API GDPR-compliant?
All requests to Stock Sector Correlation Matrix 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/sectorcorrelation-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/sectorcorrelation-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/sectorcorrelation-api/SOME_PATH");
curl_setopt($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/sectorcorrelation-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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