Invest like a shark
Curated by Brian Kim, CPA — every pick gets a plain-English summary and the key takeaways.
Brian Kim, CPA · 2.89M YouTube Subscribers →What this book actually teaches
- 01Small investors' edge is nimbleness — the ability to hold cash and exit fast — not the ability to out-research institutions.
- 02Trade with the trend using relative strength and breakouts from consolidation; don't buy weakness hoping for a turn.
- 03Predetermined stop losses and scaling-in beat full-size conviction entries; survival is the prerequisite for compounding.
- 04Most retail traders lose because they sell winners early and hold losers — DePorre's discipline inverts this.
- 05Sitting in cash is a position; forcing trades in a chop market is the most expensive mistake active traders make.
What's in this book
James "RevShark" DePorre's argument is that small individual investors should stop trying to imitate Warren Buffett — long-horizon, fundamentals-driven, fully-invested — and instead embrace the structural advantages they actually have: nimbleness, the ability to hold cash, and the freedom to exit a position the same day they enter it. DePorre, a deaf trader who built a following through TheStreet and his RevShark column, frames the small investor as a shark: small, fast, opportunistic, and willing to swim away when conditions turn.
The core arguments come in three layers. First, the structural critique: mutual funds and large institutions can't move quickly, can't go fully to cash, and are benchmarked against indices that force them to stay invested even when the tape is hostile. Individuals have none of those constraints and squander the advantage by adopting buy-and-hold orthodoxy that was designed for institutions. Second, a technical-trading framework built around relative strength, breakouts from consolidation patterns, and momentum confirmation. DePorre is explicit that he is trend-following, not value-investing — he wants stocks that are already working and he uses charts, not DCFs, to find them. Third, a risk-management discipline: predetermined stop losses, scaling in rather than full-size entries, and a willingness to sit in cash for weeks when nothing is setting up.
DePorre spends real time on the psychology of trading short-term — the discipline to take small losses, the discipline to not overtrade in a chop market, and the discipline to ride a winner instead of taking profits at the first 5%. He is direct that most retail traders lose because they invert this: they hold losers hoping for a comeback and sell winners to lock in a small gain.
Who this is for: active individual investors who already trade and want a structured framework to do it more disciplined, and longer-horizon investors who want to understand momentum-trading culture without committing to it. Not for passive index investors.
Weaknesses
DePorre wrote in the mid-2000s, before high-frequency trading, decimalization-aftermath microstructure, and zero-commission retail apps changed the texture of short-term trading. Some of the breakout patterns he describes have been arbitraged thinner. The book also leans on a survivor's perspective — DePorre made it work, and the readers who tried this approach and blew up their accounts didn't write books. And the "shark" framing, while memorable, can be read as license to overtrade by readers who lack the temperament DePorre takes for granted. Critics note that the math of frequent trading — taxes, slippage, errors — is hostile enough that most retail traders would have been better served by the indexing book DePorre is arguing against.
Verdict
worth reading as a counterpoint to buy-and-hold dogma if you are already going to trade actively. Dangerous as a first investing book.
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Buy on Amazon →About James Deporre
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