Introduction to Technical Analysis: A Framework for Reading the Market
Ask ten investors how they pick stocks and you'll get two very different philosophies: buy good companies and hold them, or let the chart tell you when to act. Neither is wrong — they just answer different questions. This post breaks down what technical analysis actually is, the three assumptions it rests on, and how it works alongside fundamental analysis to help you decide not just what to buy, but when — a foundation for everything else in this series.
This post lays the groundwork for a series on technical analysis (TA) as it applies to stock selection — including on the Nigerian Exchange (NGX), where liquidity patterns, market depth, and investor behaviour create their own unique chart signatures. Before we get into specific tools like moving averages, RSI, or chart patterns in later posts, it's worth understanding what technical analysis actually is, the assumptions it rests on, and where it fits into an investment process.
What Technical Analysis Actually Is
Technical analysis is the study of historical price and volume data to forecast future price movement. Instead of asking "is this company worth ₦50 a share based on its earnings, assets, and growth prospects?" — which is the fundamental analyst's question — the technical analyst asks: "what is the price action telling me about supply, demand, and the collective psychology of everyone trading this stock right now?"
In practice, this means studying:
- Price charts — the sequence of a stock's open, high, low, and close over time
- Volume — how many shares are changing hands, which shows conviction behind a price move
- Patterns — recurring shapes in price history that have historically preceded certain outcomes
- Indicators — mathematical calculations derived from price and volume (moving averages, RSI, MACD, and others) that help clarify trend, momentum, and potential turning points
None of this requires reading an annual report, a rights issue prospectus, or a dividend history. A technical analyst could, in theory, trade a stock without knowing what the underlying company does — though in practice, most serious investors blend both disciplines.
The Core Assumptions Behind Technical Analysis
Technical analysis rests on three foundational beliefs. Understanding these matters, because they explain both why TA works reasonably well and where its limits are.
1. Price discounts everything. The theory holds that a stock's price already reflects all known information — earnings expectations, macroeconomic conditions, investor sentiment, even rumours. If this is true, then studying price movement is a shortcut to studying everything that drives it, without needing to independently analyse each factor yourself.
2. Prices move in trends. Once a stock starts moving in a direction — up, down, or sideways — it tends to continue in that direction until something causes it to reverse. This is the single most important assumption in TA, because nearly every tool in the technical analyst's kit (moving averages, trendlines, breakout strategies) exists to identify a trend early and ride it.
3. History tends to repeat itself. Market patterns recur because they're rooted in human psychology — fear, greed, herd behaviour, overreaction, and regret don't change much from one market cycle to the next. A "head and shoulders" pattern or a "double bottom" recurs across decades and across different markets because the crowd behaviour that produces it is remarkably consistent.
It's worth being honest that these are assumptions, not laws of physics. They hold often enough to be useful, but not always — which is why risk management, not prediction, is the real discipline underneath good technical trading.
Technical Analysis vs. Fundamental Analysis
It's tempting to see these as competing philosophies, but they're better understood as answering different questions on different time horizons.
| Fundamental Analysis | Technical Analysis | |
|---|---|---|
| Core question | Is this a good company at this price? | Is this a good time to buy or sell? |
| Primary inputs | Financial statements, earnings, industry position, management quality | Price charts, volume, trend indicators |
| Time horizon | Typically longer-term | Can be short, medium, or long-term |
| Best for | Deciding what to own | Deciding when to enter or exit |
A common and effective approach — and the one this series will build toward — is to use fundamental analysis to build a shortlist of quality companies, then use technical analysis to time entries and exits within that shortlist. You might decide a company is fundamentally sound and undervalued, but technical analysis can help you avoid buying into a stock that's still in a clear downtrend, or help you identify a more favourable entry point after a pullback.
How Technical Analysis Helps With Stock Selection
Here's where TA becomes practically useful for building a buy list, rather than just an academic exercise:
Identifying trend direction. Before anything else, technical analysis helps answer a simple but crucial question: is this stock currently in an uptrend, downtrend, or trading sideways? Buying into a strong uptrend statistically offers better odds than trying to catch a falling stock, no matter how "cheap" it looks on fundamentals.
Spotting entry and exit points. Support and resistance levels — price zones where a stock has historically struggled to fall below or rise above — give traders and investors reference points for when to buy, when to take profit, and where to place a stop-loss to manage risk.
Confirming momentum. Volume and momentum indicators help distinguish a genuine breakout (backed by strong buying interest) from a false move that's likely to fail and reverse. This is particularly relevant in markets like the NGX, where thin trading in certain counters can produce misleading price spikes on very light volume.
Filtering a watchlist. If you already have a list of fundamentally attractive stocks, technical screening — looking for stocks near support, breaking out of consolidation, or showing improving relative strength — can help you decide which ones to act on first.
Managing risk. Perhaps the most underrated use of TA: it gives you objective rules for when to admit a trade or investment thesis isn't working, rather than relying on hope or emotion.
A Word of Caution
Technical analysis is not a crystal ball, and it's not a replacement for understanding what you own. It's a probabilistic tool — it improves your odds and sharpens your timing, but no pattern or indicator works 100% of the time. Markets are influenced by liquidity conditions, regulatory announcements, macroeconomic shocks, and — particularly in frontier and emerging markets — periods of thin trading that can distort technical signals. This is especially worth keeping in mind on the NGX, where a handful of large trades can move a chart in ways that wouldn't happen in a deeper, more liquid market.
The investors who get the most out of technical analysis tend to treat it as one input among several — alongside fundamentals, macro context, and disciplined risk management — rather than a standalone system for picking winners.
What's Next
This post has laid the conceptual groundwork: what technical analysis is, the assumptions it rests on, and how it complements fundamental analysis in a stock selection process. In the next posts in this series, we'll get into the specific tools of the trade — starting with how to read a price chart, the major chart types, and the trend and momentum indicators every investor should understand before applying technical analysis to real trading decisions.