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About Helious

Helious is a live US market news service for people who trade rates. We watch the wires, the Treasury, the statistical agencies and the Fed, and you get the number as it lands. A release comes with its surprise against consensus, an auction with its tail and bidder split, and the curve with a name for the regime it is in. Reading it is free.

Every US economic release, scored against forecast

When CPI, nonfarm payrolls or GDP crosses, we put the print up beside consensus and size the surprise against how far that series usually misses. The market reaction sits next to the headline. Every indicator also keeps a permanent page of its own with the release schedule, the forecast, the prior, the recent prints and a sample CSV download. The full history comes through the API. Start with the next CPI release date, nonfarm payrolls, US GDP release dates, or every indicator we track.

Wire 08:30:00.0
Captured 08:30:01.9
Actual +0.6% vs +0.3%
Surprise +1.4 sigma

Retail Sales, 15 August 2026. Wire to screen in 1.9 seconds.

Treasury auction results in seconds

Every US Treasury auction result is up within seconds of the wire. You get the tail or stop-through in basis points, bid-to-cover against that tenor's own twelve-auction average, the indirect, direct and dealer split, and a one-word verdict: strong, in line or weak. Each tenor keeps a permanent page with years of history and a CSV. Go straight to 10-year Treasury note auction results, 30-year bond auction results, 13-week bill auction results, 4-week Treasury bill auction results, or read what an auction tail and bid-to-cover actually tell you.

10-Year Note Auction · 12 Aug 2026
4.683%
tail -0.4bp · b/c 2.53 · indirects 76.7% strong
{
  "tenor": "10-year-note",
  "high_yield": 4.683,
  "tail_bps": -0.4,
  "bid_to_cover": 2.53,
  "indirect_pct": 76.7,
  "verdict": "strong",
  "captured_ms": 1900
}

It is the same result either way you read it, and an assistant can ask for it directly instead of scraping the page.

The auction schedule and the week ahead

Every tenor page carries the date of its next auction, so you are not hunting down a PDF to find it. The calendar shows the coming week of US releases and auctions with the time in ET, the forecast, the prior and the live result as it lands, and past weeks stay online at a permanent URL. The Treasury auction schedule, this week's US economic calendar and the next FOMC meeting are all here.

Yields, the curve regime and Fed speakers

The rates board carries the whole US Treasury curve, the day's move in basis points and the 2s10s and 3m10y spreads. It also names the regime, bull steepener, bear flattener or one of the other two, with a deadband so a rounding error never gets called a trend. We track Fed speakers hawkish to dovish as they talk. See Treasury yields and the curve, the 2s10s spread and Fed speakers.

How the desk works

Machines capture the numbers and fixed rules score them. The capture pipeline builds the data pages from primary official releases and market records, not by rewriting what another outlet said. If a number is on an indexable page you can trace it back to a primary record, and the rules behind any scored read are written down on the methodology page. None of it is investment advice.

FAQ

What is Helious?

Helious is a live US market news service. It scores every US economic release against consensus the second it prints, and puts up Treasury auction results within seconds of the wire. It also follows the yield curve, tracks Fed speakers and carries a live audio squawk. Reading it is free and you do not need a card.

Where can I find US Treasury auction results today?

Helious publishes every US Treasury auction result within seconds of the wire: the tail or stop-through in basis points, bid-to-cover against its twelve-auction average, the indirect, direct and dealer split, and a strong, in line or weak verdict. Each tenor has a permanent page with the recent results and a sample CSV download. The full history comes through the API. See 10-year note auction results or every tenor we cover.

When is the next Treasury auction?

Every tenor page shows the date of its next auction alongside the last result, and the calendar lists auctions beside economic releases for the week ahead. Treasury announces sizes and dates in advance, and Helious carries the same schedule without the PDF, updated as each new announcement lands.

What is an auction tail?

The tail is the gap between the high yield an auction stops at and the when-issued yield trading just before the deadline, quoted in basis points. A positive tail means buyers demanded a higher yield than the market expected, so demand was soft. A stop-through is the opposite: the auction cleared through the market. More on the auction tail.

When is the next CPI or GDP release?

Each indicator keeps a permanent page with its release schedule, the exact time in ET, the consensus forecast, the prior value and the full history. CPI prints at 8:30 AM ET in the middle of the month and GDP at 8:30 AM ET on its quarterly schedule. See CPI, GDP or every indicator we track.

What does it mean to score a release against forecast?

Helious compares the actual print to the consensus forecast, then measures that miss against how far the series normally deviates, so a 0.1 miss on a quiet indicator is not treated like a 0.1 miss on CPI. The result is a signed surprise score, published with the market reaction beside the headline. The rules are on the methodology page.

Is Helious free?

Yes. Reading Helious is free and needs no card. The public news feed runs an hour behind live. A free account adds saved layouts, alerts and an API key with seven days of news history. Live news through the API and the MCP server starts at $14.99 a month, with the Treasury curve still an hour behind. At $39.99 every market price is live, and you get the live screen, squawk audio and Ask Helious, the assistant inside the terminal, with 30 credits a month. See what it costs.

Can an AI assistant or agent use Helious data?

Yes, two ways round. Your assistant can read Helious: a REST API, an MCP server with 20+ tools, an A2A agent card and OAuth 2.1, so it can request an auction result or a release surprise directly rather than scraping a page, and sample access needs no key. Or ours can answer you: Ask Helious sits inside the terminal on Pro and Ultimate and answers in plain English from the live data, showing the numbers it used. See the API, Helious for AI agents and how the credits work.
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