Risk Management: The Most Important Part of Trading

Posted on December 3, 2025 - 3:48pm

ryanbrennan's blog

If you’re looking to strengthen your trading discipline, I’ve just posted a new Substack article and video on what I consider the most important part of trading: risk management. In it, I walk through position sizing models, trade adjustments, using the Greeks to monitor risk, and how to protect a portfolio as markets evolve. These principles are timeless, and the full recorded webinar is included for subscribers. You can read the writeup and watch the video here:

Read the full article and watch the webinar →

ryanbrennan's blog

Past performance is not necessarily indicative of future results.
Trading or investing whether on margin or otherwise carries a high level of risk, and may not be suitable for all persons. Leverage can work against you as well as for you. Before deciding to trade or invest you should carefully consider your investment objectives, level of experience, and ability to tolerate risk. The possibility exists that you could sustain a loss of some or all of your initial investment or even more than your initial investment and therefore you should not invest money that you cannot afford to lose. You should be aware of all the risks associated with trading and investing, and seek advice from an independent financial advisor if you have any doubts.
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