Premarket Movers

Premarket stock movers, including top gainers, losers, and most active stocks before regular market hours.
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2026-09-04

Today's Premarket Market Analysis

FRI, 9:00a ET: Consumer weakness and soft guidance weigh on sentiment as retail giants stumble. IMRN surging +57% after securing an exclusive U.S. distribution deal for its IBS treatment; AOUT +26% on a Q1 sales beat. LULU gapping down -19% following a double-cut to annual revenue forecasts; TRBG -35% on thin volume.(more...)

Tape Overview

Premarket action leans risk-off as disappointing retail guidance and software outlooks overshadow strength in micro-cap biotech.

Top Mover: IMRN — [U.S. distribution agreement for PROIBS]

Immuron Limited (IMRN) jumped 57.0% on 50m shares after announcing an exclusive deal with Calmino group AB to launch its IBS treatment in the U.S. market. This follows a successful FY26 rollout in Australia, providing a significant catalyst for the $1.74 stock.

Top Loser: TRBG — [Profit taking on low-float volatility]

TurboGen Ltd. (TRBG) plunged -35.9% on 284k shares, retracing recent gains in a high-volatility session. While no fresh news is out, the move reflects typical exhaustion for this low-float name following a period of speculative buying.

Also Moving

Lululemon Athletica Inc. (LULU) is down -19.5% on 2.9m shares after slashing its annual revenue forecast for the second time this year. American Outdoor Brands, Inc. (AOUT) gained 26.3% on unusual volume after reporting a 25.4% net sales increase, while Guidewire Software, Inc. (GWRE) fell -15.7% due to a weak forward outlook despite a Q4 beat.

Broader Context

Traders are pivoting toward defensive positioning as major consumer brands signal a deepening slowdown in North American demand ahead of the opening bell.

Show per section:
10s
Data last updated: Friday, Sep 4 at 9:29 AM EDT

Premarket GainersGainers

%ChgLastSymbCompanyVolume
+64%
1.81
Immuron Limited American Depositary Shares4013k
+29%
12.88
American Outdoor Brands, Inc. Common Stock25k
+28%
4.14
Wetour Robotics Limited Ordinary Shares1338k
+18%
4.35
Akanda Corp. Common Shares527k
+17%
10.63
Concrete Pumping Holdings, Inc. Common Stock12k
+15%
44.74
Samsara Inc.240k
+15%
14.16
Smith & Wesson Brands, Inc. Common Stock34k
+15%
2.56
Torrid Holdings Inc.9k
+11%
13.90
Polyrizon Ltd. Ordinary Shares0k
+10%
7.19
Niki BioSolutions, Inc. Common Stock189k

Premarket LosersLosers

%ChgLastSymbCompanyVolume
-32%
8.04
TurboGen Ltd. Ordinary Shares41k
-23%
5.46
eGain Corporation58k
-19%
98.05
lululemon athletica inc.716k
-19%
29.77
Oxford Industries, Inc.21k
-17%
167.53
GUIDEWIRE SOFTWARE, INC.47k
-17%
12.00
NIP Group Inc. American Depositary Shares0k
-17%
931.83
Fair Isaac Corporation33k
-14%
1.29
Game Your Game, Inc. Common Stock544k
-13%
8.82
Asana, Inc. Class A Common Stock119k
-12%
11.19
bioAffinity Technologies, Inc. Common Stock27k

Premarket ActivesActives

%ChgLastSymbCompanyVolume
-3.8%
362.18
Tesla, Inc. Common Stock3035k
-5.2%
137.34
Strategy Inc Common Stock Class A3689k
+0.7%
237.25
Bloom Energy Corporation849k
+0.3%
923.75
McKesson Corporation199k
+0.0%
328.22
Apple Inc.532k
+0.0%
258.96
Amazon.Com Inc642k
+1.2%
231.12
Nvidia Corp608k
+1.3%
970.38
Micron Technology, Inc.138k
-1.4%
180.04
Palantir Technologies Inc. Class A Common Stock720k
+2.7%
152.89
Moderna, Inc. Common Stock841k

Premarket Unusual VolumeUnusual Volume

%ChgLastSymbCompanyVolume
+29%
12.88
American Outdoor Brands, Inc. Common Stock25k
-1.7%
10.01
Vroom, Inc. Common Stock0k
+1.9%
9.25
ChargePoint Holdings, Inc.450k
+0.9%
2.31
GRI Bio, Inc. Common Stock8k
-1.8%
14.04
Greenpro Capital Corp. Common Stock0k
-0.1%
10.61
Mexco Energy Corporation0k
+15%
2.56
Torrid Holdings Inc.9k
-0.2%
18.13
MarketWise, Inc. Class A Common Stock0k
-1.4%
4.34
Tilly's Inc.10k
-19%
98.05
lululemon athletica inc.716k

Premarket GainersGainers

%ChgLastSymbCompanyVolume
+64%
1.81
Immuron Limited American Depositary Shares4013k
+29%
12.88
American Outdoor Brands, Inc. Common Stock25k
+28%
4.14
Wetour Robotics Limited Ordinary Shares1338k
+18%
4.35
Akanda Corp. Common Shares527k
+17%
10.63
Concrete Pumping Holdings, Inc. Common Stock12k
+15%
44.74
Samsara Inc.240k
+15%
14.16
Smith & Wesson Brands, Inc. Common Stock34k
+15%
2.56
Torrid Holdings Inc.9k
+11%
13.90
Polyrizon Ltd. Ordinary Shares0k
+10%
7.19
Niki BioSolutions, Inc. Common Stock189k

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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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