Riskâadjusted position sizing should be tightened.
The classâaction filing adds a fresh, material legal headârisk to LINEâs fundamentals and is already reflected in a sharply negative sentiment score (â75). Expect heightened downsideâbias and a widening of the bidâask spread as market participants reâprice the potential liability exposure. In a riskâadjusted framework this translates into a higher volatilityâadjusted âriskâperâshareâ metric (e.g., a larger standardâdeviationâbased stopâloss distance or a higher impliedâvolatility premium). Consequently, the optimal position size â whether calculated via a fixedâfraction, Kelly, or volatilityâtargeting model â should be reduced by roughly 30â50âŻ% relative to the preânews allocation, to keep the dollarârisk per trade within the traderâs overall risk budget.
Implementation tip:
If you normally risk 1âŻ% of capital on a LINE trade with a 5âŻ% volatilityâbased stop, cut the capitalârisk to 0.5âŻ% (or halve the number of shares) and widen the stop to accommodate the expected increase in volatility. This smaller, more conservative sizing preserves capital while still allowing you to stay positioned for any shortâterm price moves that may arise from the lawsuitâs progression.