Momentum investing buys assets with strong recent performance or sells weak performers on the premise that trends can persist.
Momentum investing is a strategy that aims to capitalize on the continuance of existing trends in the market. Investors who use this strategy purchase securities that have shown an upward price trend or short-sell securities that have demonstrated a downward trend.
Momentum investing is based on the financial market’s tendency to exhibit inertia. Just like a physical object in motion tends to stay in motion, momentum investors believe that a security that has performed well in the past will continue to perform well in the future, at least in the short term.
The RSI is a popular momentum indicator that measures the speed and change of price movements. It is calculated as follows:
Where:
The MACD is another commonly used momentum indicator that shows the relationship between two moving averages of a security’s price. The formula is:
Where:
During the late 1990s, internet-related stocks exhibited significant upward price momentum, attracting more investors and driving prices even higher. This phenomenon was driven by the expectation of continued growth and innovation in the technology sector.
In the initial stages of the COVID-19 pandemic, certain stocks like Zoom and Netflix saw an unprecedented rise in their prices due to increased demand for remote communication tools and entertainment. Momentum investors capitalized on these trends.
Critics argue that momentum investing contradicts the Efficient Market Hypothesis (EMH), which states that asset prices fully reflect all available information, making it impossible to consistently achieve higher returns through market timing.
Momentum investing is susceptible to sudden price reversals. When trends change direction, investors holding onto high-performing stocks may face significant losses.
Momentum investing can be an attractive strategy for individual investors looking to achieve higher returns in the short term, assuming they can effectively manage the associated risks.
Large institutional investors often employ quantitative models to identify and capitalize on momentum trends across various asset classes and markets.
While momentum investing focuses on stocks with rising prices, value investing targets undervalued stocks believed to be trading below their intrinsic value.
Like momentum investing, growth investing also targets stocks expected to grow at an above-average rate. However, growth investors usually hold onto these stocks for a longer period, betting on sustained growth rather than short-term price trends.
Use Momentum Investing when an investment decision depends on allocation, expected return, downside risk, fees, liquidity, benchmark fit, manager selection, or portfolio monitoring. Momentum Investing should lead to a decision, not just a definition.
In practice, map Momentum Investing to three investor questions: which exposure changes, what risk or cost comes with that exposure, and how success will be measured against a benchmark or objective. If Momentum Investing affects cash distributions, volatility, tax treatment, rebalancing, or drawdown behavior, make that effect explicit in the investment thesis. If those investor outcomes are unchanged, keep Momentum Investing as background context rather than a reason to buy, sell, or size a position.
Verify Momentum Investing against the portfolio holdings, benchmark, mandate, fee schedule, liquidity terms, tax position, and performance attribution. Momentum Investing matters only when it changes exposure, return source, cost, risk contribution, or portfolio role.
The analysis boundary for Momentum Investing is crossed when exposure, expected return, liquidity, fees, taxes, benchmark fit, and downside risk remain unchanged. Then Momentum Investing can explain the position, but it should not justify allocation by itself.
Trace Momentum Investing from investment objective to holdings, benchmark, expected return driver, liquidity constraint, fee drag, and downside scenario. The term deserves weight when it changes portfolio construction, risk budget, due diligence, rebalancing, tax treatment, or the investor action that follows.
The practical signal for Momentum Investing is a changed portfolio action: allocation, sizing, manager selection, security choice, rebalancing, tax lot, liquidity reserve, or exit timing. When that signal is absent, Momentum Investing explains context but should not drive the investment decision.
The evidence link for Momentum Investing is the portfolio record, fund document, benchmark data, holding-level exposure, fee schedule, tax lot, or risk report. Without that link, Momentum Investing should not support allocation, security selection, manager review, sizing, or exit timing.
The risk check for Momentum Investing is whether a portfolio decision is being justified by a label instead of risk and return evidence. Test concentration, liquidity, fees, tax drag, benchmark fit, downside exposure, and whether the investor can actually tolerate the resulting path.
Decision evidence for Momentum Investing should show the holding, benchmark, expected return driver, risk exposure, cost, liquidity, and investor constraint affected. Momentum Investing can change a portfolio decision only when those inputs alter allocation, sizing, due diligence, or exit timing.
Review evidence for Momentum Investing should make the investing evidence traceable, not just definitional. For Momentum Investing, tie the evidence to the security record, portfolio report, mandate, benchmark, and transaction history and explain why that evidence is reliable enough for the finance decision.
Before relying on Momentum Investing, document the decision context: the holding period, valuation date, performance window, and market environment being evaluated. Keep the Momentum Investing evidence trail visible: fee treatment, tax status, risk limit, liquidity check, and benchmark or peer comparison. In Investments work, Momentum Investing matters when it changes expected return, risk exposure, diversification, suitability, or portfolio construction.
The practical risk for Momentum Investing is that investment terms can become generic unless they are tied to a position, objective, horizon, and measurable risk tradeoff. If those facts are unavailable, keep Momentum Investing in the explanatory layer instead of treating it as decision-grade evidence.
Momentum Investing is material when it can change a finance conclusion, not just when Momentum Investing appears in a document. For Momentum Investing, test whether the evidence affects risk exposure, expected return, liquidity, diversification, benchmark fit, fees, taxes, or suitability. If those decision points are unchanged, keep Momentum Investing explanatory and avoid overweighting it in the final decision.
A practical materiality check is to name the decision that would change if Momentum Investing is wrong, stale, missing, or tied to the wrong period. Momentum Investing warrants deeper review only when position sizing, portfolio construction, manager selection, or security selection would change.