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How to predict the stock price for the next day using Machine Learning?

Written by - Marisha Bhatt

October 6, 2023 8 minutes

The use of AI and machine learning has become part of our daily lives and is only going to increase going forward. Their use in the stock markets, especially, in the form of dynamic trading portals is a classic example of the same. The new apps available today even assist in predicting the prices of stocks for traders and enabling them to make efficient trading decisions in real time. But ever wondered how it is done? Are you curious about it too? Then let us delve into the use of machine learning for predicting stock prices and understand it a bit better. 

Read More: Predicting Stock Price for the next day – What to do? 

Why is understanding market prediction and stock price prediction important?

Before understanding the use of machine learning for predicting stock prices, let us first understand why the prediction of market movement and stock prices is important for an investor or trader. 

Understanding market and stock price predictions is crucial for investors or traders because it helps them make informed decisions. By analyzing market predictions, one can get a sense of the overall economic health and trends in various industries. Stock price predictions also involve estimating the future value of a company and its shares. So if an investor is planning to invest their hard-earned money, it is important to know the price movements of the target stocks. 

These predictions provide valuable guidance like the entry and exit points for stocks. It also helps in determining the potential holding period by helping investors maximize returns and minimize losses.They also play a role in retirement planning, as they can impact the growth of your savings over time. By understanding market and stock price predictions, one can navigate the complex world of investments more effectively and work towards achieving your financial goals.

Can machine learning be used for stock price prediction?

Machine learning can be a valuable tool for investors and traders in stock price prediction. Machine learning algorithms can analyze vast amounts of historical stock data, news, and market sentiment to identify patterns and trends that are challenging for humans to detect. By using these algorithms, investors and traders can gain insights into potential price movements, helping them make more informed decisions.

However, it’s essential to remember that stock markets are influenced by various unpredictable factors, and machine learning models are not foolproof. They can provide probabilities and trends but cannot guarantee precise predictions. Therefore, while machine learning can be a valuable part of your trading strategy, it should be combined with other forms of analysis and risk management to make informed investment decisions in the stock market.

What are the machine learning techniques used for stock price prediction?

There are many machine learning techniques that offer various approaches to understanding stock price prediction and thereby shape the trading and investing strategies for investors and traders. The use of machine learning techniques for stock price prediction can be explained hereunder. 

Regression Analysis

Linear Regression

This method examines historical stock price data and various relevant factors to create a simple linear equation that predicts future prices based on past trends. It’s useful for short-term predictions when there’s a linear relationship between factors.

Polynomial Regression

This extends linear regression by fitting a curve (instead of a straight line) to the data, allowing for more complex price movement predictions. It’s particularly useful when price movements show nonlinear patterns.

Time Series Analysis

ARIMA (AutoRegressive Integrated Moving Average)

ARIMA models consider past stock prices and moving averages to make predictions. It’s suitable for short-term forecasts and ideal for traders looking to capitalize on near-future price movements.

LSTM (Long Short-Term Memory)

LSTM is a type of recurrent neural network (RNN) that excels at capturing long-term dependencies in time series data. This technique is valuable for medium to long-term stock price predictions, particularly for investors seeking a broader outlook.

Sentiment Analysis

Sentiment analysis involves examining news articles, social media, and textual data to gauge market sentiment and assess its potential impact on stock prices. Natural Language Processing (NLP) techniques help extract sentiment from text, helping traders and investors understand how market sentiment can affect stock values.

Technical Indicators

Technical analysis indicators such as Moving Averages, Relative Strength Index (RSI), and Bollinger Bands are used as input features for machine learning models. These indicators help identify trends and potential buying/selling signals, aiding traders and investors in making timely decisions based on historical price patterns.

Can AI be used to predict stock prices?

Machine learning (ML) and artificial intelligence (AI) are related concepts, but they are not exactly the same. AI is a broader concept that refers to the development of computer systems capable of performing tasks that typically require human intelligence.

Analyzing data and trends, AI and machine learning are used to predict stock prices. These technologies create predictive models by identifying patterns. Despite this, predicting stock prices remains challenging due to market unpredictability and various influencing factors. While AI can aid in decision-making, it cannot ensure precise predictions due to market volatility and complexity.

What are the pros and cons of using machine learning for stock price prediction?

The use of machine learning for stock price prediction is quite common in today’s digital and dynamic world of stock markets. However, before heavily relying on machine learning tools for stock market prediction, it is also important to understand the pros and cons of the same. Here is a brief list of the pros and cons of using machine learning for stock price predictions for better understanding. 

Pros of using machine learning for stock price prediction

  • Machine learning models can analyze vast amounts of historical and real-time data, uncovering hidden patterns and insights that can inform trading decisions.
  • Algorithms can process data quickly, allowing for timely decision-making, especially in fast-paced markets like India.
  • Machine learning models can adapt to changing market conditions and learn from new data, potentially improving their predictive accuracy over time.
  • By identifying potential price movements and trends, machine learning can help investors and traders manage risks more effectively.
  • Automated trading systems based on machine learning can execute trades on behalf of investors, eliminating emotional biases and ensuring consistent strategy execution.

Cons of using machine learning for stock price prediction

  • The accuracy of predictions depends on the quality and cleanliness of the input data, and financial data can be noisy and prone to errors.
  • Sudden market shifts, particularly in volatile markets like India, can challenge the effectiveness of machine learning models, as they may not adapt quickly enough.
  • Some complex machine learning models are difficult to interpret, making it challenging to understand why a model made a particular prediction.
  • Even the best models cannot guarantee accurate predictions, and financial markets are influenced by countless variables, some of which may be unpredictable.


While machine learning for stock price prediction is faster, convenient, and provides a deep insight into the stock market, it is also important to understand that it may not be 100% accurate due to its dependence on the inputs given by users. Therefore, a combination of machine learning with other forms of analysis and risk management can help strike a balance between data-driven insights and prudent decision-making in the dynamic world of stock trading.


1. How to predict the stock market for the next day?

Predicting the stock market for the next day is a formidable task due to the numerous variables affecting stock prices. Traders and analysts employ techniques like technical and fundamental analysis, and occasionally machine learning, to make informed predictions, but these methods are still fraught with uncertainties and risks.

2. Which algorithm is best for stock prediction?

The choice of the “best” algorithm for stock prediction varies based on factors such as data, market conditions, and objectives. Algorithms like LSTM and ensemble methods such as Random Forest are common choices, but achieving accurate predictions typically involves combining multiple techniques and conducting extensive data analysis.

3. What are the indicators that predict stock price?

Some of the common indicators that predict stock prices include Moving Averages, Relative Strength Index (RSI), Bollinger Bands, and MACD (Moving Average Convergence Divergence). These indicators help traders and investors gauge trends, momentum, and potential reversal points in stock prices.

4. Why is stock prediction difficult?

Stock prediction is challenging due to the complexity of financial markets, which are influenced by numerous unpredictable factors, including economic data, geopolitical events, investor sentiment, and unforeseen news and thereby may not lead to an accurate prediction of the stock prices.

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