Unusual Whales API vs SecFeed API: Insider and 13F Data
Unusual Whales is built around options flow and market activity, with insider and 13F data alongside. SecFeed is built only for SEC filings. Prices, history and licensing compared.
Unusual Whales and SecFeed overlap on insider trades and 13F holdings, but they are different kinds of products. Unusual Whales is a market activity platform. SecFeed is an SEC filings API.
The short answer
- Choose Unusual Whales if you trade on options flow, dark pool prints, congress trades or market wide activity, and insider and 13F data are a side dish.
- Choose SecFeed if SEC filings are the main course: long history, every form, raw text and sections, at a lower price, with the right to show the data in your app.
At a glance
| Unusual Whales API | SecFeed API | |
|---|---|---|
| Built for | Options flow and market activity | SEC filings |
| Individual plans | $99, $150, $375 a month | $19 a month |
| Commercial use | Business plans from $750 a month | $79 a month, display in your app |
| Free tier | 7 day trial on some plans | 125 calls once |
| Insider trades | Yes, grouped by person and day by default | Yes, every transaction since 2006 |
| 13F holdings | Yes, by fund and by ticker | Yes, by fund and by stock |
| History through the API | 90 days to 2 years by plan | Every filing since 1993 |
| 8-K items, 10-K sections, full text search | Not as dedicated endpoints | Yes |
| Options flow, dark pool, congress trades | Yes | No |
| Real time | WebSocket (Advanced plan), Kafka on higher tiers | Server-Sent Events stream and webhooks |
| MCP server | Yes | Yes |
Where Unusual Whales is better
- Market data. Real time options flow, multi leg strategy detection, Greeks and exposure, dark pool, futures and more. SecFeed has no market prices at all.
- Political and alternative data. Congress trades, politician portfolios and lobbying.
- Trader workflow. Insider sector flow and market wide buy and sell totals are ready made for traders.
Where SecFeed is better
- History. Every SEC filing since 1993 and insider trades since 2006 on every plan. The Unusual Whales API looks back up to 2 years.
- The whole filing. 8-K items, 10-K and 10-Q sections, full text search, XBRL financials, executive pay, Form D and dozens more forms.
- Price and rights. $19 a month to start, and $79 a month to show the data inside your product. Unusual Whales starts commercial use at $750 a month.
When SecFeed is the wrong choice
If your strategy runs on options flow or intraday market activity, SecFeed will not help you. Use Unusual Whales, and add SecFeed only if you need deeper filing history.
Example
Insider purchases over $250,000:
import os, requests
r = requests.get("https://secfeedapi.com/v1/insider-trading",
params={"code": "P", "minValue": 250000, "size": 50},
headers={"Authorization": f"Bearer {os.environ['SECFEED_KEY']}"}, timeout=60)
for t in r.json()["transactions"]:
print(t["tx_date"], t["ticker"], t["owners"][0]["name"], t["value"])More: insider trading tracker guide and Form 4 transaction codes.
Facts about Unusual Whales were taken from its public website and docs on 2026-10-22. Plans and prices change, so check their site before you decide. Unusual Whales is a trademark of its owner; SecFeed is not affiliated with, endorsed by or sponsored by it. Spotted something wrong or out of date? Email support@secfeedapi.com and we will fix it.