Tidal's edge · 01 of 3

Most AMMs don't know Wall Street closes.

Stock tokens on Robinhood Chain settle 24/7. The primary listing venue for the underlying equity does not — NYSE regular trading hours (RTH) run 09:30–16:00 ET, Monday–Friday. Outside that window, NBBO quality degrades and on-chain price discovery decouples from the reference market. Session Guard is a live, client-side check against that calendar that Tidal's range and fee-tier defaults key off.

Checking RTH session…

Live, computed from the actual NYSE calendar in your browser right now — not a mockup. Excludes market holidays for now; full holiday calendar lands before mainnet.

Mechanism

What actually shifts when the underlying market closes. Defaults below are illustrative — final parameters are set at pool deployment, not fixed protocol constants.

Trigger

Wall-clock time in America/New_York, checked against the NYSE RTH window (09:30–16:00 ET, Mon–Fri). Re-evaluated every 30s client-side; no oracle dependency for the check itself.

In-session default

Tight suggested bounds around the current tick, standard fee tier for the pair (e.g. 5 bps for a deep stock-token/stablecoin pair). Assumes NBBO-anchored price discovery.

Off-session default

Suggested bounds widen (illustrative: ×2–3) and the fee tier escalates a step, pricing in adverse selection from thinner off-hours books and wider realized spreads on the reference asset.

Scope

Applies to defaults surfaced in the position-creation flow for stock-token pairs. Crypto/crypto pairs (e.g. ETH/USDC) are unaffected — no RTH dependency.

Where the premium goes

The off-session fee-tier delta doesn't disappear into the treasury — it's the entire yield source for $TIDE / Tide Pool staking. Session Guard is the mechanism; Tide Pool is what it funds.

Known gap

Does not yet account for NYSE market holidays or early-close sessions. Full holiday calendar is scoped for the mainnet release, tracked alongside the audited range logic.

Session Guard vs. a generic AMM

Generic AMM

✕Static range/fee parameters, session-agnostic

✕One fee tier regardless of NBBO quality

✕No signal when the reference market is closed

Tidal · Session Guard

✓Range and fee-tier defaults keyed to the RTH calendar

✓Fee tier escalates off-session to price in adverse selection

✓Live session state surfaced per stock-token pair

Session Guard's live badge above is a working demo of the underlying check — it reflects real wall-clock time. The range/fee-tier adjustment it feeds into is not enforced on-chain yet: no pools are deployed. See Docs for the full glossary and current build status.