On August 11, 2026, CME Group announced that it will expand 24/7 trading to its 100-Ounce Silver futures contract starting September 11, 2026, pending regulatory review. The same schedule has been running on 1-Ounce Gold futures since July 24, 2026. Two CME metals contracts now trade through the weekend, while equity index futures keep their bounded session. Here is what that changes, what it does not change, and why the question deserves more than a shrug if you trade index futures.
What CME announced, and when it takes effect
The official press release is dated August 11, 2026, and it comes down to a handful of precise facts.
- 24/7 trading expands to the 100-Ounce Silver contract starting September 11, 2026, pending regulatory review. That last phrase matters: nothing is locked in at the time of the announcement.
- 24/7 trading on 1-Ounce Gold launched on July 24, 2026. Since then, more than 53,000 contracts have traded during the newly expanded weekend sessions, representing roughly 219 million dollars in notional value.
- The 100-Ounce Silver contract is not new: it launched in February 2026, with 17,800 contracts of average daily volume in the first half of the year.
- 100-Ounce Silver is financially settled, based on the daily settlement price of the benchmark COMEX 5,000-Ounce Silver futures contract. It is listed by and subject to the rules of COMEX.
CME describes both contracts as right-sized for retail traders, with smaller notional exposure. It is the same underlying move the blog covered when the exchange launched its E-nano futures in August 2026: the exchange keeps slicing its products into smaller sizes, and it is now widening the hours on those smaller sizes.
What does not change: index futures keep their session
Here is the part nobody should skip. The announcement does not cover equity index futures. If you trade Micro E-mini S&P 500 or Micro E-mini Nasdaq, nothing changes for you on September 11. The official contract specifications page for the Micro E-mini S&P 500, checked on September 8, 2026, still shows the same session.
| Point | Micro E-mini S&P 500 (MES) | 100-Ounce Silver, from 09/11/2026 |
|---|---|---|
| Weekly session | Sunday 6:00 p.m. to Friday 5:00 p.m. ET | 24 hours a day, 7 days a week, weekends included |
| Daily break | one hour, 5:00 p.m. to 6:00 p.m. ET | not specified in the press release, check the contract specs |
| Settlement method | financially settled | financially settled, on COMEX 5,000-Ounce Silver |
| Covered by the 08/11/2026 announcement | no | yes, pending regulatory review |
That empty cell stays empty. The press release announces a 24/7 schedule without describing any daily technical break. Putting a number there would mean inventing one.
What a market close is actually for
A session that closes is not a leftover from the days when the books had to be squared by hand. It is a boundary, and a boundary exists to measure things.
The daily settlement price is computed over an end-of-session window. The high of the day, the low of the day, the body of the daily candle: every one of those quantities assumes you know where the day starts and where it ends. That is the point already made in the article on market structure: a swing high is not a raw fact, it is a sliced fact, and part of the slicing is published by the exchange itself.
On MES, the break between 5:00 p.m. and 6:00 p.m. ET creates that boundary. It also produces the Sunday evening gap, the hole between Friday's close and Sunday's open. There is nothing mysterious about that gap: it is the fingerprint of the close.
What a market with no break takes away from chart readers
On a contract that runs continuously, several reference points most traders use without thinking lose their footing.
- The weekend gap disappears. No close means no reopen, so there is no hole left to fill. A read built on gaps has nothing to work with on this product.
- The session open becomes a platform convention. When the market never stops, the software decides where to cut the daily candle. Two platforms can display two different daily highs for the same contract, and neither one is wrong.
- The weekend turns into real position risk. Holding through from Friday to Monday on a contract that keeps quoting is no longer about absorbing a gap: it is letting a market run for two days when you are probably not watching the screen.
- Weekend liquidity is not weekday liquidity. CME puts the 1-Ounce Gold weekend sessions at roughly 219 million dollars of cumulative notional since July 24, against the 50 billion dollars of average daily notional it reports across its silver futures for the first half of the year. An open book is not a deep book.
The blind spot on the prop firm side
If you trade a funded account, the interesting question is not whether you will trade silver on a Sunday. It is blunter and more useful: when a rule says end of day, which day does it mean?
Plenty of prop firm rules are anchored to the session. An end-of-day drawdown locks at the close, a daily loss limit resets at a set time. The blog covers those mechanics in the article on the three freeze regimes of the Apex trailing drawdown. As long as every permitted product shares the same boundary, the question never comes up. The day a firm grants access to a product that never closes, it has to make a call.
I did not check with any prop firm whether it offers these two contracts, whether it permits weekend trading, or how it computes its daily boundaries in that case. Those three points cannot be guessed, and they cannot be extrapolated from an exchange press release. You ask the firm's support, and you keep the answer in writing. That is the only honest way to handle the question today.
What this announcement does not say
A launch release describes access, not opportunity. It says nothing about the direction of silver prices, and nothing about whether weekend trading is worth doing. CME sells access to markets: opening more of it is the job, not a signal.
What it does say, and it is plenty, is that market hours are a decision, not a law of nature. An execution framework that quietly rests on "the market closes, so I take stock" needs to know what becomes of it when that assumption drops. On index futures, it still holds. On these two metals contracts, it no longer does. Knowing which side you are on before you place an order is process, not theory. The full approach is laid out on the Prop System page.
Frequently asked questions
Does 24/7 trading apply to the Micro E-mini S&P 500?
No. The CME announcement of August 11, 2026 covers the 100-Ounce Silver contract, and the 24/7 schedule had already been running on 1-Ounce Gold since July 24, 2026. The Micro E-mini S&P 500 contract specifications, checked on September 8, 2026, still show a session from Sunday 6:00 p.m. to Friday 5:00 p.m. ET, with a one-hour daily break.
When does silver start trading 24/7?
Starting September 11, 2026 according to the press release, pending regulatory review. That caveat is part of the announcement: the date is the planned schedule, not a granted approval.
Does the 100-Ounce Silver contract involve physical delivery of silver?
No. It is financially settled, based on the daily settlement price of the benchmark COMEX 5,000-Ounce Silver futures contract. It is listed by and subject to the rules of COMEX.
Can I trade these contracts from my prop firm account?
That is a question to ask your firm, not one to infer. Product access, weekend trading permissions and the way daily boundaries are computed are decisions each company makes on its own, and they are not readable in an exchange press release. Ask, and keep the answer in writing.
Why is a market open on weekends a particular risk?
Because being open does not guarantee depth. A thinner book means wider execution slippage, and the position stays open for two days during which you are probably not watching the screen.
Facts and figures checked against the official CME Group press release of August 11, 2026 and the official Micro E-mini S&P 500 contract specifications, on September 8, 2026. Market hours and contract specifications change: always check the official source before you trade.
Futures trading involves substantial risk of capital loss. This article is educational and does not constitute investment advice.