Premarket Movers

Premarket stock movers, including top gainers, losers, and most active stocks before regular market hours.
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2026-10-16

Today's Premarket Market Analysis

TODAY, 9:00a ET: Mixed premarket tone as biotech volatility offsets mega-cap tech gains. JAGX leads gainers +46% on speculative volume; TCRT +28% following multiple 13D filings indicating new ownership stakes. GUTS is gapping down -48% on a "sell the news" reaction to its REMAIN-1 trial data; FOXF -23% after reversing yesterday's gains.(more...)

Tape Overview

The premarket session shows a bifurcated tape with aggressive selling in clinical-stage biotech and weakness in semiconductor leaders like Micron Technology, Inc. (MU).

Top Mover: Jaguar Health, Inc. (JAGX) — Speculative momentum on low-float volume

JAGX is surging 46.0% on 236k shares without a fresh fundamental catalyst, suggesting a retail-driven squeeze or sympathy move. The stock is testing multi-week highs as volume begins to accelerate ahead of the opening bell.

Top Loser: Fractyl Health, Inc. (GUTS) — Clinical data "sell the news" event

GUTS is cratering -48.0% on 5.5x unusual volume despite reporting that its Revita procedure met co-primary endpoints in a weight maintenance trial. Traders are likely focused on the 80% retention rate versus expectations, triggering a massive liquidity exit.

Also Moving

Alaunos Therapeutics, Inc. (TCRT) is up 28.8% on heavy volume following several SEC filings detailing significant new beneficial ownership positions. Netcapital Inc. (NCPL) gained 28.0% as it rebounds from recent fraud allegations, while Fox Factory Holding Corp. (FOXF) dropped -23.2% in a sharp reversal of its prior session's strength.

Broader Context

Index futures remain pinned near flat as markets digest a 3.1% gain in Tesla, Inc. (TSLA) against a -2.4% drag from MU following sector-specific cooling.

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Data last updated: Today at 9:29 AM EDT

Premarket ActivesActives

%ChgLastSymbCompanyVolume
-2.7%
906.28
Micron Technology, Inc.1981k
+2.1%
370.00
Tesla, Inc. Common Stock4324k
+1.2%
346.21
Apple Inc.2622k
-0.6%
147.70
Space Exploration Technologies Corp. Class A Common Stock5662k
-0.2%
216.76
Nvidia Corp2380k
-3.4%
1347.30
Sandisk Corporation Common Stock326k
-2.3%
549.15
Advanced Micro Devices529k
-3.2%
141.46
SK hynix Inc. American Depositary Shares1998k
-1.9%
93.60
Intel Corp2537k
-6.5%
65.19
CoreWeave, Inc. Class A Common Stock3521k

Premarket GainersGainers

%ChgLastSymbCompanyVolume
+46%
3.35
Jaguar Health, Inc.259k
+33%
1.80
Exascale Labs Holdings Inc. Class A Common Stock19794k
+28%
2.79
Alaunos Therapeutics, Inc. Common Stock12518k
+24%
12.38
Picard Medical, Inc.170k
+23%
2.44
Netcapital Inc. Common Stock11154k
+19%
1.26
FF EAI Robotics Ecosystem Inc. Common Stock160k
+18%
3.56
SITE Centers Corp. Common Shares465k
+14%
2.19
Alector, Inc. Common Stock739k
+12%
16.93
National Healthcare Properties, Inc. Class A Common Stock0k
+12%
10.01
Energous Corporation0k

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Premarket FAQs

Q: When does premarket open?
A: Premarket trading sessions start weekdays around 4:00 am EST and last until the market open, which is 9:30 am EST.
Q: Can you trade options premarket?
A: Options trading during premarket hours is generally not available. Options markets typically operate only during regular trading hours.
Q: How to trade premarket?
A: Most brokerages offer trading during premarket and after hours. Some popular examples are Robinhood, TD Ameritrade and E*Trade. It's usually best to trade with limit orders during the premarket, due to lower trading volumes.

⏰ Premarket Trading Hours by Brokerage

BrokeragePremarket Hours (ET)Notes
Interactive Brokers4:00 a.m. – 9:30 a.m.IBKR Pro from 4:00 a.m.; IBKR Lite from 7:00 a.m.
Webull4:00 a.m. – 9:30 a.m.Full extended hours available
Moomoo4:00 a.m. – 9:30 a.m.Extensive early access
TradeZero4:00 a.m. – 9:30 a.m.Full early access from 4:00 a.m.
Charles Schwab7:00 a.m. – 9:25 a.m.Orders may be placed after 8:05 p.m. the prior day
Fidelity7:00 a.m. – 9:28 a.m.Short sale orders allowed from 8:00 a.m.
E*TRADE7:00 a.m. – 9:30 a.m.Limit orders allowed from 7:00 a.m.
Merrill Edge7:00 a.m. – 9:30 a.m.Standard premarket access
Robinhood7:00 a.m. – 9:30 a.m.Extended hours trading enabled
Firstrade8:00 a.m. – 9:25 a.m.Shorter premarket window
Ally Invest8:00 a.m. – 9:30 a.m.Standard premarket access
TradeStation8:00 a.m. – 9:30 a.m.Premarket begins at 8:00 a.m.
Public8:00 a.m. – 9:30 a.m.Premarket trading supported
SoFi Invest9:00 a.m. – 9:30 a.m.Very limited premarket access
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