According to Stock Market Nerd, today underscores three risk rules for traders: maintain diversification, avoid margin, and steer clear of short-dated options to keep risk and reward in balance, source: Stock Market Nerd. The author cautions that recent months have conditioned some investors to prioritize maximizing upside while neglecting these controls, and stresses that the risk side of the risk/reward equation matters, source: Stock Market Nerd. Even for growth investors, the author notes that very few positions, if any, should be hyper-speculative moonshots, encouraging disciplined position sizing and instrument selection, source: Stock Market Nerd.