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Author: Stephen Guilfoyle

Stephen "Sarge" Guilfoyle is the founder and President of Sarge986 LLC, a family run trading operation. An NYSE floor trader for over 30 years, Guilfoyle has served as the Chief Market Economist for Stuart Frankel & Co., the U.S. Economist for Meridian Equity Partners, and as a Vice President in Block Trading and Investment Banking with Credit Suisse over the years. Guilfoyle earned his nickname “Sarge” while serving as an actual sergeant in reserve components of the U.S. Marine Corps, and U.S. Army while simultaneously working on Wall Street. He self-identifies as a day trader, long-term investor, and anything in between. He believes in removing the emotion out of the decision-making process and trusting the data. Look to Guilfoyle to prepare you for the trading day with his popular early morning Market Recon newsletter on TheStreet Pro, which provides a mix of fundamentals, technical analysis, economic commentary and trading ideas.

Memory Stocks Made Us Some Cash, Then Came Wednesday. Now What?

Avatar photo Stephen Guilfoyle on July 2, 2026

SanDisk (SNDK)

SanDisk, Micron, Western Digital and others got a Wednesday beating, so let’s take a look at the charts and see how to handle ’em now.

Sticking With This Evolv Technologies Price Target as Swing Crowd Wakes Up

Avatar photo Stephen Guilfoyle on July 2, 2026

Wall Street

The small-cap security screening name has announced a multi-year deal with TD Garden in Boston.

SanDisk Slashed, Micron Mashed; Jobs Day Forecast; And Are You at Your Desk?

Avatar photo Stephen Guilfoyle on July 2, 2026

Let’s look at the beating taken by memory stocks yesterday, the shot at a September rate cut, jobs day , and how July 4 week used to work for traders.

Nike Rallies as Execution Improves but There’s a Problem

Avatar photo Stephen Guilfoyle on July 1, 2026

The once-prestigious apparel firm has turned some heads on Wall Street.

Sticking With This Alto Ingredients Price Target as Breakout Develops

Avatar photo Stephen Guilfoyle on July 1, 2026

Price Targets

Readers should take note of some action in the stock chart for this small-cap name.

Semi Shocker; Micron, Intel, AMD Hit Home Runs; Warsh Gets to Work

Avatar photo Stephen Guilfoyle on July 1, 2026

Let’s pop open the hood and look at the market in June and Q2 to zero in on the winners; also, why we must watch the new Fed head closely today.

Drone Firm AeroVironment Crushes Expectations, When Is the Right Time to Buy?

Avatar photo Stephen Guilfoyle on June 30, 2026

The unmanned aircraft name turned heads on Wall Street and I have a trade idea.

New Rocket Lab Price Target After $8 Billion Iridium Update

Avatar photo Stephen Guilfoyle on June 30, 2026

We’re adjusting our target price for the aerospace name after some big news.

Mag 7 Down $2.3T!; The SpaceX IPO Order Mystery; Semis Spring Back

Avatar photo Stephen Guilfoyle on June 30, 2026

Let’s check how far the Magnificent 7 market cap fell in June, a strange Korean broker drama, and Warren Buffett’s caution on Gates Foundation.

New SpaceX Trade Idea After Charter Communications Report

Avatar photo Stephen Guilfoyle on June 29, 2026

Elon Musk’s aerospace firm is now headed to a prestigious index.

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