Bear markets make ordinary investing feel suddenly urgent. Prices fall, headlines get louder, and the temptation is to do something dramatic. A better response is usually more controlled: make sure short-term money is not exposed to stock-market risk, keep long-term money tied to a sensible allocation, and use the decline to add or rebalance deliberately instead of trying to call the exact bottom. Investor.gov describes dollar-cost averaging as investing equal amounts at regular intervals, and it explains that rebalancing restores a portfolio to its intended mix when market moves push it off target. (Investor.gov)

Start by asking what each dollar needs to do
Bear markets expose allocation mistakes faster than bull markets. If money might be needed soon for tuition, a home purchase, or living expenses, the real problem usually is not that stocks are down today. It is that near-term spending money was assigned a long-term job. Investor.gov notes that asset allocation should reflect both time horizon and risk tolerance: investors with shorter horizons often prefer less volatile assets, while longer horizons may be able to accept more volatility in pursuit of growth. (Investor.gov)
- List major goals by when the money will be spent, not by account name. A brokerage account can hold long-term money, and a retirement account can still be invested more aggressively than the owner can truly tolerate. (Investor.gov)
- Separate cash needs from growth needs. Money that must be dependable in the near term should not rely on a quick stock-market recovery, while long-term money can be judged over years rather than this month’s headlines. (Investor.gov)
- If the portfolio only felt comfortable when markets were rising, that is a warning that the stock allocation may be too aggressive for the investor’s real tolerance for loss. (Investor.gov)
Let automatic buying and rebalancing do most of the work
In a downturn, the most useful move for many investors is also the least exciting: keep adding on a schedule. Dollar-cost averaging means investing equal portions at regular intervals regardless of market swings, which means buying more shares when prices are lower and fewer when prices are higher. That does not predict the bottom, but it can reduce the emotional damage caused by waiting for a perfect entry that rarely feels obvious in real time. (Investor.gov)
Rebalancing matters for the same reason. Investor.gov explains that when holdings drift away from the original mix, rebalancing restores the intended risk level and effectively forces investors to trim relative winners and add to relative losers. In a hypothetical portfolio targeted at 70% stocks and 30% bonds, a bear market might knock the stock side down enough that the mix becomes 60/40. Rebalancing is not a forecast that tomorrow is the low. It is a rules-based way to keep the portfolio aligned with the plan. (Investor.gov)

One nuance matters. Automatic investing is especially useful when new money is arriving regularly anyway. If a large cash sum is already sitting on the sidelines, phasing it in can reduce the regret of buying all at once before another drop, but that also leaves part of the money uninvested for longer. That follows from how dollar-cost averaging works; it is not a guarantee of a better result either way. The point is to choose intentionally rather than swing between fear and fear of missing out. (Investor.gov)
Advanced tactics help only when they solve a specific problem
Two bear-market ideas are discussed constantly and often used too casually: tax-loss harvesting and leverage. In a taxable brokerage account, realizing losses can improve after-tax efficiency, but only if the replacement trade and recordkeeping are handled carefully. IRS Publication 550 says the wash-sale rule can disallow a loss if you buy substantially identical securities within 30 days before or after the sale, and the rule can also apply when substantially identical stock is acquired in an IRA or Roth IRA. (IRS Publication 550)
That means the goal is not to sell and then immediately buy the exact same holding back. A cleaner approach is to decide first whether the position still belongs in the portfolio, then, if harvesting makes sense, move into a similar but not substantially identical investment and document the dates. For many smaller accounts, the behavioral wins from steady saving and disciplined rebalancing matter more than squeezing out every possible tax angle during a stressful market. (IRS Publication 550)
Leverage is the tactic to treat most carefully. FINRA explains that margin calls can be triggered because the value of the account falls or because the brokerage firm raises house maintenance requirements, and firms may sell securities in the account to meet the call. In other words, borrowing to buy the dip can turn a temporary decline into forced selling at exactly the wrong time. For most long-term investors, a bear market is a bad time to discover that the plan depended on borrowed money. (FINRA)
The best bear-market strategy is usually a disciplined one, not a dramatic one: match risk to time horizon, keep cash needs separate, continue buying on a plan, rebalance when the mix drifts, and use tax or leverage tactics only when the rules and risks are fully understood. Difficult markets punish improvisation more than patience. A written allocation and contribution plan is often more useful than another market prediction during the downturn itself. (Investor.gov)
References
- Asset Allocation and Diversification | Investor.gov – https://www.investor.gov/introduction-investing/getting-started/asset-allocation
- Dollar Cost Averaging | Investor.gov – https://www.investor.gov/introduction-investing/investing-basics/glossary/dollar-cost-averaging
- Publication 550 (2025), Investment Income and Expenses | Internal Revenue Service – https://www.irs.gov/publications/p550
- Know What Triggers a Margin Call | FINRA.org – https://www.finra.org/investors/insights/margin-calls