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Beginner guide
Momentum vs value investing
Momentum and value are two of the oldest and most studied ideas in investing. They start from opposite instincts: momentum follows what has been rising, while value looks for what seems cheap. Understanding both helps you see what a score can and can't tell you.
What momentum investing is
Momentum investing is based on the observation that stocks which have risen over recent months have often kept rising for a while, and recent losers have often kept falling. Academic studies have documented this pattern across many markets and decades; a widely cited 1993 paper by Narasimhan Jegadeesh and Sheridan Titman found it in US stocks over periods of roughly three to twelve months.
Momentum investors use price-based tools such as moving averages, recent returns and relative strength (how a stock has performed compared with others or the market).
Strengths
- It's objective and easy to measure from price data alone.
- It can keep you in strong trends and out of persistent decliners.
Weaknesses
- Trends reverse, sometimes sharply. Momentum strategies have suffered sudden crashes, often when beaten-down stocks rebound quickly after a market bottom.
- Following trends can mean buying after a big run-up.
- Frequent trading to keep up with changing trends adds costs and, in taxable accounts, taxes.
What value investing is
Value investing looks for companies whose share price seems low compared with what the business is worth. The approach is associated with Benjamin Graham and later Warren Buffett. Value investors study fundamentals such as:
- Price-to-earnings (P/E): share price divided by earnings per share.
- Price-to-book (P/B): share price compared with the company's net assets.
- Free cash flow, debt levels and dividend history.
Strengths
- It's grounded in the business itself, not just the chart.
- Buying below estimated worth can give a "margin of safety" if estimates prove too optimistic.
Weaknesses
- Cheap stocks can stay cheap for years, or get cheaper. Some are cheap for good reason, which investors call a "value trap".
- Estimating a company's worth involves judgment and assumptions that can be wrong.
- Value as a style has gone through long stretches of lagging the broader market.
Side by side
| Momentum | Value | |
| Core question | Is the price trending? | Is the price cheap? |
| Main inputs | Price history | Financial statements |
| Typical time frame | Weeks to months | Years |
| Biggest risk | Sudden reversals | Waiting a long time, value traps |
Can you combine them?
Many investors use both. One common approach is to shortlist companies on fundamentals, then use trend signals to understand how the market is treating them right now. A strong business in a steep downtrend may be worth watching rather than buying immediately; a hot stock with weak fundamentals may deserve extra caution.
What StockSignalCheck's scores measure
The short-term and longer-term scores on StockSignalCheck are momentum and trend measures only. They're calculated from recent closing prices and moving averages. They don't look at earnings, valuation, debt or any other fundamentals. A high score tells you a stock's recent price trend has been strong, nothing more. For the "is it cheap?" side of the picture, you'll need a company's financial statements, which public companies publish in their annual and quarterly reports.
Questions to ask before you invest
- Is the recent trend up, down or sideways, over both short and long windows?
- Is the company profitable, and is its debt manageable?
- Does the price look high or low compared with its earnings and its peers?
- How much could you lose if the trend reversed, and could you live with that?
Keep learning
This guide is for education only. It isn't personalized financial, investment or tax advice, and nothing here is a recommendation to buy or sell any security. Investing involves risk, including the possible loss of your money.