Technical Analysis in Investing

Technical analysis (TA) studies past price movements and trading volume to forecast future price behavior. Unlike fundamental analysis, which examines a company's financials, TA focuses purely on market data — price, volume, and momentum.

The core assumption is that all known information is already reflected in a stock's price, and that prices move in identifiable trends and patterns that tend to repeat over time.

• TA is widely used by short-term traders and swing traders, but long-term investors also use it to time entry and exit points.
• Candlestick charts, line charts, and bar charts are the primary tools for visualizing price data.
• Technical signals work best when confirmed by trading volume and multiple independent indicators.

Key Concepts:

• Support: A price level where buying pressure historically prevents further decline. When price drops to support and bounces, it confirms the level's strength.
• Resistance: A price level where selling pressure historically prevents further gains. A break above resistance can signal a new uptrend.
• Trendlines: Drawn by connecting a series of highs or lows, trendlines define the direction of price movement — up, down, or sideways.
• Volume: Rising volume during a price move confirms trend strength. Weak volume on a breakout may signal a false or unsustainable move.

Common Chart Patterns:

Pattern	Signal	Description
Head and Shoulders	Reversal (bearish)	Three peaks — middle is highest; signals end of uptrend
Inverse Head and Shoulders	Reversal (bullish)	Three troughs — middle is lowest; signals end of downtrend
Double Top	Reversal (bearish)	Two peaks at similar price; marks a strong resistance zone
Double Bottom	Reversal (bullish)	Two troughs at similar price; marks a strong support zone
Ascending Triangle	Continuation (bullish)	Flat top resistance with rising lows — breakout likely upward
Descending Triangle	Continuation (bearish)	Flat bottom support with falling highs — breakout likely downward

• Simple Moving Average (SMA): Averages price over a set period — commonly the 50-day or 200-day SMA. When a shorter SMA crosses above a longer one, it generates a golden cross buy signal; crossing below generates a death cross sell signal.
• Exponential Moving Average (EMA): Weights recent prices more heavily than the SMA, making it more responsive to new price information.
• Relative Strength Index (RSI): Oscillates between 0 and 100. Readings above 70 suggest overbought conditions; readings below 30 suggest oversold conditions.
• MACD (Moving Average Convergence Divergence): Tracks the difference between the 12-day and 26-day EMAs. A bullish signal occurs when the MACD line crosses above the signal line.
• Bollinger Bands: Two standard deviation bands above and below a 20-day SMA. Price touching the upper band may signal overbought conditions; the lower band may signal oversold.
• VWAP (Volume Weighted Average Price): The average price weighted by volume throughout the trading day. Widely used by institutional traders as a daily benchmark.

Aspect	Benefit	Limitation
Speed	Signals appear quickly from price data	Can generate false signals in choppy markets
Objectivity	Rules-based approach reduces emotional decisions	Patterns are subjective and open to interpretation
Flexibility	Works across stocks, ETFs, forex, and crypto	Does not account for fundamental business changes
Entry and Exit Timing	Helps identify specific actionable price levels	Lagging indicators react after a move has started
Risk Management	Supports precise stop-loss placement	Over-reliance on indicators can lead to analysis paralysis

• TradingView: Industry-standard charting platform with hundreds of built-in indicators and a large community sharing chart ideas and setups.
• thinkorswim (TD Ameritrade/Schwab): Advanced trading platform with custom scripting for indicators and real-time streaming data.
• Finviz: Free stock screener with chart filtering for technical signals like RSI levels, moving average crossovers, and gap patterns.
• Investopedia Technical Analysis Academy: Free and paid courses covering TA concepts from beginner to advanced skill levels.