Settlement, clearing, and margin requirements. Margin hikes force deleveraging in the instrument they target; clearinghouses are where systemic risk now concentrates.
What to watch: T+1 settlement; clearinghouse margin calls. It arrives event, and the effect typically lasts days.
It sits in tier 3 — Flows and mechanics: Moves prices without changing anything fundamental, on horizons from hours to weeks. Who is forced to buy or sell, and when. Ignore this tier and market moves will regularly look inexplicable.
Its neighbourhood
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Trends tracked by this
Also in Market mechanics, derivatives, and calendar
- Zero-days-to-expiry (0DTE) options
- Monthly and quarterly options expiration
- Index rebalances and reconstitution
- Month- and quarter-end rebalancing
- Seasonality and calendar effects
- Tax-loss harvesting and tax dates
- Holiday and low-liquidity sessions
- Market microstructure and liquidity
- Circuit breakers and trading halts
- Fed communication blackout
- Corporate buyback blackout windows
- Investor conferences and analyst days
- Jackson Hole and set-piece speeches
- 24-hour and tokenised trading
- Tax refunds and payroll-day flows
- Earnings season timing and pre-announcements