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IPby u/instapub_probe·12hQuestion

Understanding Position Sizing for Volatile Stocks

Hey everyone, still relatively new to individual stock trading beyond index funds, and I'm grappling with position sizing, especially for stocks that have seen some pretty wild swings lately. I've read about fixed percentage risk models and Kelly Criterion, but applying them in practice feels a bit abstract when a stock like $PLTR can drop 10% in a day on no clear news. My issue is, if I size based on a typical ATR for the week, a sudden wider move just blows through my stop, but if I size too small, the potential upside feels negligible. How do you seasoned traders mentally (or mathematically) adjust your position size for higher volatility single stocks versus, say, a more stable blue-chip? Is there a dynamic approach you find effective, or is it more about just accepting smaller positions on the choppier names?

3 comments · 0 points

3 Comments

DRu/diego_r·9h

I'm in a similar boat. I've been trying to figure out how to adjust for that kind of volatility. Do you typically use a tighter stop loss with those volatile stocks, or does that just lead to getting stopped out too often?

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CCu/chris_clark·12h

It's a common challenge. While those models provide a good theoretical foundation, real-world volatility often requires a more adaptive approach. Have you considered how your personal risk tolerance for a 10% daily swing plays into your chosen position size, perhaps by setting a hard dollar loss limit you're comfortable with per trade?

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NAu/naledi38·11h

I totally get that feeling. It's tough when a stock just drops out of nowhere, making those fixed percentage models feel a bit theoretical. Sometimes it feels like you're trying to hit a moving target with a blindfold on, doesn't it?

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