What if Wall Street shut down?

"Wall Street" is not one thing, so it would take several separate systems failing at once for it to disappear. This page lists the pieces, and what is on record about the times the biggest exchange did close.

Last updated 3 November 2026

What "Wall Street" is made of

Exchanges. Where buyers and sellers are matched. The NYSE and Nasdaq are the best known, and there are others.
Brokers. The firms you place orders through. They keep your account records.
Clearing. After a trade, the National Securities Clearing Corporation (NSCC) matches and nets it. NSCC generally clears and settles on a T+1 basis, one business day after the trade (DTCC).
Settlement and custody. The Depository Trust Company (DTC), created in 1973, holds securities in book-entry form so they change owner on a ledger, not on paper. DTCC says DTC holds more than 1.4 million active securities issues valued at US$87.1 trillion (DTCC, current figure on its page at the time of writing).

NSCC and DTC are both owned by DTCC. If an exchange stopped, trading would pause. If clearing and settlement stopped, completed trades could not be finished and ownership records could not be updated.

The times it actually stopped

1914: the NYSE closed on 31 July 1914. Bonds reopened on 28 November and stocks on 12 December, close to four and a half months (History.com).
2001: after the 11 September attacks, trading did not resume until Monday 17 September, four trading sessions later (Federal Reserve History). The SEC says all markets reopened that Monday after systems tests on the Saturday (SEC). The S&P 500 closed down 4.9% on reopening (daily closes).

The brakes that already exist

Short of a closure, the market-wide circuit breakers pause all US trading if the S&P 500 falls 7%, 13% or 20% in a day (NYSE Rule 7.12). The 7% halt triggered four times in March 2020 (SEC filing). The crash page has the details: what would happen if the stock market crashed today.

What happens to your holdings if it stops

Ownership records do not live on the trading floor. Your broker, and the clearing and settlement firms behind it, keep them. In Australia a CHESS holding is recorded in your name under your HIN on ASX's register (ASX). A pause in trading stops you buying and selling. It does not by itself change what the records say you own.

What this does not tell you

This is not a forecast, and the closures above had specific causes: a war and a terrorist attack. The list of systems is simplified. Real trading also involves banks, data networks, regulators and more.

Questions

Has the New York Stock Exchange ever shut down before?

Yes. It closed on 31 July 1914 at the start of the First World War, resumed bond trading on 28 November and stock trading on 12 December 1914. It also closed for four trading sessions after the 11 September 2001 attacks and reopened on 17 September.

What would have to fail for Wall Street to disappear?

Not just one building. Orders pass through exchanges such as the NYSE and Nasdaq. Trades are then cleared by the National Securities Clearing Corporation and settled by the Depository Trust Company, both part of DTCC. Brokers and banks connect to all of it.

Is Wall Street a place?

Mostly not. Wall Street is a street in New York and a common nickname for the US financial industry. The work is done by the exchanges, brokers, clearing and custody firms listed above.

Where Tickfloor fits

Tickfloor scores the chart of any stock out of 10 from ten common chart checks. The score describes what the chart looks like today. It does not predict a crash, and it cannot tell you when one is coming. We also publish our failed tests: we backtested 1,342 chart-based strategies and none passed the luck check (0 of 1,774 tests; in-sample, not a promise). The full list is on the evidence page, and you can score a stock free.

Sources

General information, not personal advice. Tickfloor does not hold a financial services licence.