Define the horizon
Money needed for an imminent essential expense has a different job from money set aside for a distant goal. Before thinking about a stock-market entry date, consider access needs, exposure to losses and existing obligations. A rising index is not proof that tomorrow will rise; a fall is not proof of a quick rebound.
Compare processes, not predictions
Regular investing spreads purchases across dates. Investing an available lump sum places the money at risk sooner. Either can experience losses; postponing exposure also has an opportunity cost. The right comparison depends on circumstances, not a universal winning rule.
Understand what an index number measures
A claim about the S&P 500 should specify dates and whether it refers to price changes or total return including dividends. Currency, fees and taxes can make an investor’s own result different. We do not turn an index headline into a list of “best stocks to buy”.
Write down your assumptions
What loss could you absorb? When might you need the money? How concentrated would the investment be? Read diversification, drawdown and compounding together. An adviser can help when the decision requires personalised guidance; no article can guarantee an entry point.