▲Top Tier Newswire

After-Hours Trading

After-hours trading (also "post-market") is the trading session that runs after the official US equity market close. Hours: 16:00 ET to 20:00 ET on regular trading days.

Why after-hours matters

The single biggest driver of after-hours activity is earnings releases. Companies reporting after the close typically issue press releases between 16:01 and 16:30 ET, with the conference call to follow at 16:30 or 17:00. The stock reaction during the AH session shows institutional and informed-trader response before the next day's open.

Other drivers:

  • M&A announcements
  • Fed officials' speeches
  • Major macro releases (rare in AH, more common pre-market)
  • Late-day SEC filings (8-K disclosures)

Liquidity caveat

After-hours liquidity is much thinner than regular session, especially after 18:00 ET. A 5% AH move on light volume can reverse aggressively when the regular session opens the next day. Treat AH moves on heavily-traded names as more meaningful than AH moves on small caps with stale order books.

After-hours quotes on Top Tier Newswire

The terminal and the public ticker pages display the AH last-trade price when the post-market session is active. The AI Top Trades pack uses AH price as extended_price for entry anchoring — a long called at 17:30 ET after an earnings beat is recorded with the realistic AH entry, not Friday's regular close. The lifecycle return calculation honours the original entry through the next open.

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