Why should we try to maintain two layers of cash in our positions?

In Graham's "The Intelligent Investor," it is suggested that investors limit their stock investments to between 25% and 75% of their funds and adjust their positions inversely based on market movements.

Initially, I didn’t take it seriously—after all, entering the stock market is about making money, so why leave funds idle if they won’t appreciate? If the author believes the market will rise long-term, why not go all-in for higher returns? Was the author mistaken?

But theory alone is shallow. After some time, especially under the guidance of my mentor, I’ve come to understand. Graham is a master for a reason. He knows stocks appreciate over time, but holding cash accounts for market dynamics and investor psychology. In practice, cash serves at least three purposes:

1. Emergency Funds for Buying the Dip

The stock market’s design ensures that buying the dip effectively lowers your average cost, accelerating recovery. In certain ranges, buying the dip can turn a loss into a profit, creating a clear contrast with holding stagnant positions.

2. Day Trading to Expand Safety Margins

Following the first point, selling shares after a rebound—common in day trading—reduces per-share costs, enhancing safety margins and easing psychological pressure during downturns.

3. Seizing New Opportunities

Whether it’s sudden setbacks in existing holdings, market shifts, or emerging industries, new opportunities constantly arise. Participation requires available funds for entry or swing trading.

For example, entering positions in Google and Apple was possible only because I had capital ready. Though profits are modest now, the low entry cost and diversification benefits are valuable.

Thus, even if selling during a rally seems like "missing out," don’t regret it—this cash isn’t meant for chasing gains. It’s not about how much a single trade could’ve made but about stepping back from the game to prepare for crises and opportunities.

Hospitals and fire stations are overlooked until needed. One well-timed dip buy or opportunity can boost profits, refine strategies, and expand an investor’s mindset. Flexibility and restraint lead to greater leaps—this is the holistic view.

Why Two Tiers of Cash?

Too much drags returns; too little undermines effectiveness.

Generally, long-term investors aiming for steady gains allocate most funds to stocks, holding minimal cash to maximize returns. Limited cash forces careful evaluation of dip-buying and opportunities, encouraging patience and curbing reckless speculation.