Wondering when does the stock market open? If you’ve been checking calendars, planning trades or just trying to time errands around MLK Day, you’re not alone. Interest in market hours often surges around federal holidays (that’s why searches for things like stock markets closed, chick fil a mlk day and is usps closed on mlk day spike). Below I break down regular hours, pre/post-market sessions, holiday rules and practical next steps so you can plan with confidence.
Regular U.S. Market Hours
The two primary exchanges—NYSE and Nasdaq—open at 9:30 a.m. Eastern Time and close at 4:00 p.m. ET on normal trading days. That’s the heart of the market when most volume and official execution occur.
For official calendar and holiday confirmations see the NYSE official site or the broader overview on Stock market (Wikipedia).
Pre-market and After-hours
Pre-market trading typically runs from 4:00 a.m. ET to 9:30 a.m. ET; after-hours trading runs from 4:00 p.m. ET to 8:00 p.m. ET on most platforms. Liquidity is thinner and spreads wider—so orders can behave differently than during regular hours.
Holiday Schedule: Are Markets Closed?
The major U.S. stock markets observe a handful of federal holidays. On those days the exchanges are closed (no regular session), though some brokerages still allow limited electronic trading.
| Exchange / Session | Regular Hours (ET) | Holiday Status |
|---|---|---|
| NYSE | 9:30 a.m. – 4:00 p.m. | Closed on major federal holidays (check NYSE calendar) |
| Nasdaq | 9:30 a.m. – 4:00 p.m. | Closed on major federal holidays |
| Pre/Post-market | 4:00 a.m. – 9:30 a.m.; 4:00 p.m. – 8:00 p.m. | Available depending on broker (liquidity varies) |
MLK Day and the Markets
Martin Luther King Jr. Day is a federal holiday (third Monday in January). Historically, major U.S. exchanges are closed on MLK Day—so yes, people often search whether the stock markets closed for the holiday. That’s the reason this topic trends each January.
What About Retailers and Services on MLK Day?
Folks also ask about store openings and services the same day they check market hours—hence queries like chick fil a mlk day, is costco open on mlk day 2026, and is usps closed on mlk day.
- Chick-fil-A MLK Day: Most Chick-fil-A locations are open on Monday holidays (they’re famously closed on Sundays). Still, franchise hours vary—if you care, call your local restaurant or check its website.
- Costco: Costco typically remains open on MLK Day; many big-box retailers operate normal hours on federal holidays. For the specific 2026 schedule (or any future year), check your local warehouse or post their holiday notices—policies can differ by location.
- USPS: The U.S. Postal Service observes federal holidays and is closed on MLK Day. Confirm official service notices at the USPS service alerts.
Real-World Examples & Case Study
Last MLK Day, many retail stores stayed open while markets and federal services were closed—this created predictable traffic patterns. Traders who planned around the closed market turned to after-hours data or scheduled orders for the next open session. If you’re tracking corporate announcements, remember companies sometimes release earnings outside regular hours—so prices can gap when the market reopens.
Practical Takeaways
- Check the exchange calendar (NYSE/Nasdaq) before planning trades—holidays mean no regular session.
- If you need postal services, expect USPS closed on MLK Day; plan deliveries and mail ahead.
- For store hours (Chick-fil-A, Costco), verify your local branch—national chains often publish holiday hours online.
- Use limit orders if trading around openings to control execution price; thin pre/post-market liquidity increases risk.
Quick Reference: What to Do Now
Need to act today? 1) Check your broker’s holiday notifications and trading hours. 2) Confirm local store or restaurant hours online or by phone. 3) If you rely on mail or government services, consult the USPS alerts page.
Markets follow a predictable clock, but holidays and special sessions create planning wrinkles. Keep a small checklist and you’ll avoid surprises.
Final thoughts
Know the clock: regular sessions run 9:30–4:00 ET, pre/post-market vary by broker, and federal holidays like MLK Day close the exchanges and USPS. Retailers such as Chick-fil-A and Costco often stay open, but local exceptions exist—so double-check. One simple habit—bookmarking the NYSE calendar and your broker’s notices—saves time and stress when the next holiday rolls around.
Frequently Asked Questions
The regular session for NYSE and Nasdaq is 9:30 a.m. to 4:00 p.m. Eastern Time on normal trading days. Pre-market and after-hours sessions vary by broker and have different liquidity and risk characteristics.
Yes—major U.S. exchanges observe certain federal holidays, including Martin Luther King Jr. Day, and are closed for the regular session on that day.
The U.S. Postal Service observes federal holidays and is closed on MLK Day; see USPS service alerts for official updates.
Many Costcos remain open on MLK Day and most Chick-fil-A locations are open because the chain’s regular closure is Sunday. However, hours can vary by location—check your local store’s hours to be sure.