corporate-bond-data-and-tracelisted
Install: claude install-skill howard-lynn-ye/fin-skills
# Corporate bond data and TRACE
**Two facts about TRACE are load-bearing and a model trained through 2025 gets both wrong.**
Reporting is **15 minutes, not one** — the SEC approved a one-minute rule in September 2024 and
FINRA abandoned it. And disseminated **size is right-censored** at $5MM (investment grade) or
$1MM (non-investment grade), so TRACE volume is a lower bound, not a measurement, and every
statistic with volume in it inherits that.
Measured figures below are printed by `scripts/trace.py` (runs in **1.3 s**, numpy + scipy, one
seeded synthetic tape, no network). ✅ Measured means this file produced it on 2026-09-09 with
numpy 2.2.6, scipy 1.13.0, Python 3.11.3. Regulatory facts are marked ✅ source-verified with
the page and the date they were read.
> **The rule:** TRACE reporting is **15 minutes**, and a disseminated size is a **lower bound**.
> "5MM+" is a **censored observation** — treat it as one, or every volume statistic you build is
> biased in a known direction.
## 1. 🚨 It is still 15 minutes. It was never one minute.
✅ **Source-verified at finra.org on 2026-09-09.** FINRA **Regulatory Notice 25-17**, *FINRA
Adopts Amendments to Rule 6730 (Transaction Reporting) to Streamline Allocation Reporting for
BD/IAs*, published **2025-12-04**, effective **2026-06-08**, says:
> "FINRA is not moving forward with its proposal to reduce the 15-minute TRACE reporting outer
> limit to one minute."
and restates the standing requirement as reporting "as soon as prac