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API · /insider-api

Insider & Institutional Ownership API

healthy 4,886 Subscribers

Live US insider and institutional ownership data from Nasdaq — no key, nothing stored. The "who owns and who is trading" view of a stock: the corporate insiders (executives and directors) buying and selling their own shares, and the institutions holding the stock, distinct from the price-quote, movers and earnings APIs in the catalogue. The insider endpoint returns recent insider transactions — the insider, their relation to the company, the date, whether it was a buy or sell, the shares, the price, the computed value and the resulting holding — plus the 3-month and 12-month open-market buy/sell summary. The institutional endpoint returns the institutional ownership picture: the percent of shares held by institutions, the total holdings value and the largest holders with their position size, recent change and market value. The positions endpoint returns the institutional position-change breakdown — how many holders increased, decreased, opened new or sold out their positions, and the shares involved. Build insider-signal trackers, smart-money dashboards, ownership-change alerts and due-diligence tools on top of real Nasdaq ownership data. Look up any US stock by its ticker symbol; values and share counts are returned as clean numbers.

#trading #insider #institutional #ownership #stocks #equities #smart-money #finance
api.oanor.com/insider-api
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Machine-readable spec so AI agents can integrate this API.

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

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

Insider & Institutional Ownership API — live data on the oanor API marketplace

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
367 ms
Server probes · 24h
Subscribers
4,886
active
Total calls
80
last 7 days
status Full status page → · 12 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 10,000 calls / month
  • 3 requests / second
  • Hard cap (429 above quota, no overage)
  • 10k calls/month
  • 3 req/sec
  • All endpoints
  • No credit card
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Starter

€9.20 /month

  • 165,000 calls / month
  • 10 requests / second
  • Hard cap (429 above quota, no overage)
  • 165k calls/month
  • 10 req/sec
  • Email support
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Pro

€27.60 /month

  • 760,000 calls / month
  • 28 requests / second
  • Hard cap (429 above quota, no overage)
  • 760k calls/month
  • 28 req/sec
  • Priority support
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Scale

€60.80 /month

  • 2,750,000 calls / month
  • 60 requests / second
  • Hard cap (429 above quota, no overage)
  • 2.75M calls/month
  • 60 req/sec
  • Dedicated SLA
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Live continuous front-month (1!) quotes for the major liquid futures across every asset class, with no key: precious & base metals (gold, silver, copper, platinum), energy (WTI crude, natural gas, gasoline, heating oil), grains (wheat, corn, soybeans), softs (coffee, sugar, cocoa, cotton), livestock, equity-index (E-mini S&P 500, Nasdaq, Dow, Russell), interest-rate (2/5/10/30-year Treasuries) and FX futures from COMEX, NYMEX, CBOT, CME, CME_MINI and ICE US. Get a per-contract quote by short code (GC, CL, ES, ZW) with last price, % change and intraday OHLC, a full cross-asset board, or a per-category cut — a curated board of the contracts that actually trade.

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Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Insider & Institutional Ownership API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Insider & Institutional Ownership API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Insider & Institutional Ownership 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 Insider & Institutional Ownership API cost?
Insider & Institutional Ownership API has a free tier with 100 calls / month. Paid plans start at €9.20 / 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 Insider & Institutional Ownership API GDPR-compliant?
All requests to Insider & Institutional Ownership 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/insider-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/insider-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/insider-api/SOME_PATH");
curl_setopt($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/insider-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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