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Case Study: The Evolution of Mark Croock

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Written by Timothy Sykes
Updated 11/22/2021 3 min read

Mark’s Case Study: Key Takeaways

  • I met Mark Croock as a student in my Trading Challenge way back in 2010…
  • He’s a conservative trader who’s used my chart patterns to take on the options market…
  • PLUS — I’ll reveal the 3 technical indicators Mark looks for in every trade…

Tonight at 8 p.m. Eastern — Mark Croock’s “$100K Shortcut Summit” — Register Now

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In the crazy world of day trading, there are gunslingers and grinders. My longtime student Mark Croock is a grinder! From ditching a boring day job to becoming a millionaire day trader, Mark’s proven he’s meticulous and careful with everything he does. And it’s paid off for him— Mark’s made a cool $3 million+ trading penny stocks and options. (Not too shabby!) See the major milestones in Mark’s amazing career…


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  • 2010: Mark joins my Trading Challenge and begins trading full time
  • 2012: Mark’s trading account reaches $100K
  • 2016: I name Mark Student of the Year…
  • 2018: Mark hits the million-dollar milestone…
  • 2020: What a year! Mark makes $1,220,135.34 ( biggest year yet!)
  • 2021: Mark bags his biggest trade of all time ($127,800)!


Mark’s a technical trader. He studies charts and looks for very specific patterns. Beyond that, there are three technical indicators Mark looks for in every single trade: volume, volatility, and catalysts.

Another thing to know about Mark is that he has a negative bias — he likes to short stocks more than he likes to go long. Mark usually buys weekly put options to cap his risk and leverage his gains.

The Former Accountant’s Numbers

  • Started trading with $50,000 in 2010
  • 53% win rate
  • Over $3 million in lifetime trading profits (and counting…)
  • Average gain of over $1,800 per trade
  • Average % gain of over 7.5% per trade

Trading Superpowers

  • Versatility! Mark trades penny stocks and options, both long and short…
  • The Best Kind of Stubborn. Mark’s never satisfied. He’s always looking to improve — even when he’s winning!
  • Patience. Mark waits for his best setups and sticks to his comfort zone.

Evolve Your Trading With Mark!

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Timothy Sykes

Tim Sykes is a penny stock trader and teacher who became a self-made millionaire by the age of 22 by trading $12,415 of bar mitzvah money. After becoming disenchanted with the hedge fund world, he established the Tim Sykes Trading Challenge to teach aspiring traders how to follow his trading strategies. He’s been featured in a variety of media outlets including CNN, Larry King, Steve Harvey, Forbes, Men’s Journal, and more. He’s also an active philanthropist and environmental activist, a co-founder of Karmagawa, and has donated millions of dollars to charity. Read More

* Results are not typical and will vary from person to person. Making money trading stocks takes time, dedication, and hard work. There are inherent risks involved with investing in the stock market, including the loss of your investment. Past performance in the market is not indicative of future results. Any investment is at your own risk. See Terms of Service here

The available research on day trading suggests that most active traders lose money. Fees and overtrading are major contributors to these losses.

A 2000 study called “Trading is Hazardous to Your Wealth: The Common Stock Investment Performance of Individual Investors” evaluated 66,465 U.S. households that held stocks from 1991 to 1996. The households that traded most averaged an 11.4% annual return during a period where the overall market gained 17.9%. These lower returns were attributed to overconfidence.

A 2014 paper (revised 2019) titled “Learning Fast or Slow?” analyzed the complete transaction history of the Taiwan Stock Exchange between 1992 and 2006. It looked at the ongoing performance of day traders in this sample, and found that 97% of day traders can expect to lose money from trading, and more than 90% of all day trading volume can be traced to investors who predictably lose money. Additionally, it tied the behavior of gamblers and drivers who get more speeding tickets to overtrading, and cited studies showing that legalized gambling has an inverse effect on trading volume.

A 2019 research study (revised 2020) called “Day Trading for a Living?” observed 19,646 Brazilian futures contract traders who started day trading from 2013 to 2015, and recorded two years of their trading activity. The study authors found that 97% of traders with more than 300 days actively trading lost money, and only 1.1% earned more than the Brazilian minimum wage ($16 USD per day). They hypothesized that the greater returns shown in previous studies did not differentiate between frequent day traders and those who traded rarely, and that more frequent trading activity decreases the chance of profitability.

These studies show the wide variance of the available data on day trading profitability. One thing that seems clear from the research is that most day traders lose money .

Millionaire Media 66 W Flagler St. Ste. 900 Miami, FL 33130 United States (888) 878-3621 This is for information purposes only as Millionaire Media LLC nor Timothy Sykes is registered as a securities broker-dealer or an investment adviser. No information herein is intended as securities brokerage, investment, tax, accounting or legal advice, as an offer or solicitation of an offer to sell or buy, or as an endorsement, recommendation or sponsorship of any company, security or fund. Millionaire Media LLC and Timothy Sykes cannot and does not assess, verify or guarantee the adequacy, accuracy or completeness of any information, the suitability or profitability of any particular investment, or the potential value of any investment or informational source. The reader bears responsibility for his/her own investment research and decisions, should seek the advice of a qualified securities professional before making any investment, and investigate and fully understand any and all risks before investing. Millionaire Media LLC and Timothy Sykes in no way warrants the solvency, financial condition, or investment advisability of any of the securities mentioned in communications or websites. In addition, Millionaire Media LLC and Timothy Sykes accepts no liability whatsoever for any direct or consequential loss arising from any use of this information. This information is not intended to be used as the sole basis of any investment decision, nor should it be construed as advice designed to meet the investment needs of any particular investor. Past performance is not necessarily indicative of future returns.

Citations for Disclaimer

Barber, Brad M. and Odean, Terrance, Trading is Hazardous to Your Wealth: The Common Stock Investment Performance of Individual Investors. Available at SSRN: “Day Trading for a Living?”

Barber, Brad M. and Lee, Yi-Tsung and Liu, Yu-Jane and Odean, Terrance and Zhang, Ke, Learning Fast or Slow? (May 28, 2019). Forthcoming: Review of Asset Pricing Studies, Available at SSRN: “https://ssrn.com/abstract=2535636”

Chague, Fernando and De-Losso, Rodrigo and Giovannetti, Bruno, Day Trading for a Living? (June 11, 2020). Available at SSRN: “https://ssrn.com/abstract=3423101”