H11Halt — Regulatory Concern
H11 is a coordination code. The halt is being applied alongside another market or regulator that has raised a concern about the security. It signals that the issue extends beyond a single venue's own listing process.
What triggers it
- A regulatory concern raised by another exchange or regulatory authority in the security.
- Cross-market coordination so the security is not trading on one venue while halted on another.
How long it lasts
Determined by the originating authority rather than by a fixed schedule.
How it resumes
Trading resumes when the regulatory concern is resolved and the coordinating authorities allow quoting to restart.
What it means for a day trader
H11 implies an external party drove the halt. The relevant timeline is theirs, not the listing exchange's.
Group H11 with other regulatory codes in analysis; its outcome profile is closer to H4 and T12 than to a volatility pause.
Related halt codes
Track H11 halts as they happen
Halt Strategy monitors live NASDAQ and NYSE halts, replays the setup around each event, and backtests outcomes segmented by halt code — so H11 events are never averaged in with everything else.
Primary sources
Halt Strategy is research software, not investment advice, and does not execute trades. Halt procedures are set by the exchanges and regulators and can change; confirm current rules against the primary sources before acting on them. Read the full disclaimer and editorial policy.