The main stock market index of United States, the US500, rose to 6385 points on August 22, 2025, gaining 0.23% from the previous session. Over the past month, the index has climbed 0.41% and is up 13.32% compared to the same time last year, according to trading on a contract for difference (CFD) that tracks this benchmark index from United States. United States Stock Market Index - values, historical data, forecasts and news - updated on August of 2025.

View data of the S&P 500, an index of the stocks of 500 leading companies in the US economy, which provides a gauge of the U.S. equity market.

United Kingdom's main stock market index, the GB100, rose to 9309 points on August 21, 2025, gaining 0.23% from the previous session. Over the past month, the index has climbed 3.16% and is up 12.32% compared to the same time last year, according to trading on a contract for difference (CFD) that tracks this benchmark index from United Kingdom. United Kingdom Stock Market Index (GB100) - values, historical data, forecasts and news - updated on August of 2025.

Hong Kong's main stock market index, the HK50, rose to 25656 points on August 22, 2025, gaining 2.20% from the previous session. Over the past month, the index has climbed 0.46% and is up 45.67% compared to the same time last year, according to trading on a contract for difference (CFD) that tracks this benchmark index from Hong Kong. Hong Kong Stock Market Index (HK50) - values, historical data, forecasts and news - updated on August of 2025.

This article provides a framework to estimate the potential effects and benefits of the provision of market information in storable commodity markets. This framework is applied to the case of production forecasts for the soybean market. A rational expectations storage model of the global soybean market accounting for both inter-annual and intra-annual market dynamics is built. Shocks that occur between planting and harvesting affect the size of the potential harvest. Estimates of the size of these shocks are reported publicly, and affect the market equilibrium through adjustments to stock levels. By varying counterfactually the observability of seasonal shocks, we can estimate the efficiency gains related to the availability of advance information. They are equivalent to 2% of storage costs; the reduction of stock levels being the main channel explaining the welfare gains. The presence of advance information has a limited effect on inter-annual price volatility but redistributes price volatility during the season, increasing it just before harvest when almost all news has been received and stocks are tight, and decreasing it after harvest. The effect of news shocks is stronger on higher-order moments of the distribution with a strong decrease in skewness and kurtosis related to the lower frequency of price spikes.

France's main stock market index, the FR40, fell to 7938 points on August 21, 2025, losing 0.44% from the previous session. Over the past month, the index has climbed 2.50% and is up 5.50% compared to the same time last year, according to trading on a contract for difference (CFD) that tracks this benchmark index from France. France Stock Market Index (FR40) - values, historical data, forecasts and news - updated on August of 2025.

Stock Price Time Series for Volati AB. Volati AB (publ) is a private equity firm specializing in growth capital, buyouts, add on acquisitions in mature and middle market companies. The firm invests primarily in trading, consumer, and industry sectors. Within trading it invests in building materials sector, consumables, and material for construction (like concrete, cut stones & stone products), paper and forest products, industrials, home and garden, and agriculture and forestry farmers. Within consumer, it invests in database marketing, digitization, and e-commerce. Within industry it invests in international expansion, lean manufacturing, and HR, consumer discretionary, consumer staples, utilities. It prefers to invest in small to medium sized Nordic, European, companies mainly in Sweden. The firm invests up to SEK100 million ($99.92 million) in companies with enterprise values up to SEK1000 million ($999.20 million); revenues between SEK50 million ($49.96 million) to SEK1000 million ($999.20 million) and EBITDA up to SEK100 million ($99.92 million). It seeks majority/ownership control and prefers to invest in companies with strong cash flows and take a board seat in its portfolio companies. The firm invests out of balance sheet. Volati AB (publ) was founded in 2003 and is based in Stockholm, Sweden.

Japan's main stock market index, the JP225, rose to 42633 points on August 22, 2025, gaining 0.05% from the previous session. Over the past month, the index has climbed 3.55% and is up 11.13% compared to the same time last year, according to trading on a contract for difference (CFD) that tracks this benchmark index from Japan. Japan Stock Market Index (JP225) - values, historical data, forecasts and news - updated on August of 2025.

Sweden's main stock market index, the Stockholm, rose to 2689 points on August 22, 2025, gaining 1.62% from the previous session. Over the past month, the index has climbed 3.73% and is up 5.08% compared to the same time last year, according to trading on a contract for difference (CFD) that tracks this benchmark index from Sweden. Sweden Stock Market Index - values, historical data, forecasts and news - updated on August of 2025.

Stock market prediction remains active research in a quest to inform investors on how to trade (buy/sell) at the most opportune time. The prevalent methods used by stock market players in trying to predict the likely future trade prices are either technical, fundamental or time series analysis. This research wanted to try out machine learning methods, in contrast to the existing prevalent methods. Artificial neural networks (ANNs) tend to be the preferred machine learning method for this type of application. However, ANNs require some historical data to learn from, in order to do predictions. The research used an ANN model to test the hypothesis that the next day price (prediction) can be determined from the stock prices of the immediate last five days.

The final ANN model used for the tests was a feedforward multi-layer perceptron (MLP) with error backpropagation, using sigmoid activation function, with network configuration 5:21:21:1. The data period used was a 5-year dataset (2008 to 2012), with 80% of the data (4-year data) used for training and the balance 20% used for testing (last 1-year data).

The original raw data for Nairobi Securities Exchange (NSE) was scrapped from a publicly available and accessible website of a stock market analysis company in Kenya (Synergy, 2020). This data was first exported to a spreadsheet, then cleaned off headers and other redundant information, leaving only the data with stock name, date of trade and the related data such as volumes, low prices, high prices and adjusted prices. The data was further sorted by the stock names and then the trading dates. The data dimension was finally reduced to only what was needed for the research, which was the stock name, the date of trade and the adjusted price (average trade price). This final dataset was in CSV format, as hereby presented.

The research tested three NSE stocks with the mean absolute percentage error (MAPE) ranging between 0.77% to 1.91%, over the 3-month testing period, while the root mean squared error (RMSE) ranged between 1.83 and 3.07.

This raw data can be used to train and test any machine learning model that requires training and testing data. The data can also be used to validate and reproduce the results already presented in this research. There could be slight variance between what is obtained when reproducing the results, due to the differences in the final exact weights that the trained ANN model eventually achieves. However, these differences should not be significant.

List of data files on this dataset: stock01_NSE_01jan2008_to_31dec2012_Kakuzi.csv stock02_NSE_01jan2008_to_31dec2012_StandardBank.csv stock03_NSE_01jan2008_to_31dec2012_KenyaAirways.csv stock04_NSE_01jan2008_to_31dec2012_BamburiCement.csv stock05_NSE_01jan2008_to_31dec2012_Kengen.csv stock06_NSE_01jan2008_to_31dec2012_BAT.csv

References: Synergy Systems Ltd. (2020). MyStocks. Retrieved March 9, 2020, from http://live.mystocks.co.ke/

Germany's main stock market index, the DE40, rose to 24363 points on August 22, 2025, gaining 0.29% from the previous session. Over the past month, the index has climbed 0.50% and is up 30.75% compared to the same time last year, according to trading on a contract for difference (CFD) that tracks this benchmark index from Germany. Germany Stock Market Index (DE40) - values, historical data, forecasts and news - updated on August of 2025.

The benchmark interest rate in India was last recorded at 5.50 percent. This dataset provides - India Interest Rate - actual values, historical data, forecast, chart, statistics, economic calendar and news.

Italy's main stock market index, the IT40, rose to 43038 points on August 22, 2025, gaining 0.06% from the previous session. Over the past month, the index has climbed 5.75% and is up 27.90% compared to the same time last year, according to trading on a contract for difference (CFD) that tracks this benchmark index from Italy. Italy Stock Market Index (IT40) - values, historical data, forecasts and news - updated on August of 2025.

Brazil's main stock market index, the IBOVESPA, rose to 135817 points on August 22, 2025, gaining 0.97% from the previous session. Over the past month, the index has climbed 0.33% and is up 0.15% compared to the same time last year, according to trading on a contract for difference (CFD) that tracks this benchmark index from Brazil. Brazil Stock Market (BOVESPA) - values, historical data, forecasts and news - updated on August of 2025.

Turkey's main stock market index, the BIST 100, rose to 11319 points on August 21, 2025, gaining 1.65% from the previous session. Over the past month, the index has climbed 6.62% and is up 14.08% compared to the same time last year, according to trading on a contract for difference (CFD) that tracks this benchmark index from Turkey. Turkey Stock Market - values, historical data, forecasts and news - updated on August of 2025.

Canada's main stock market index, the TSX, rose to 28055 points on August 21, 2025, gaining 0.63% from the previous session. Over the past month, the index has climbed 2.53% and is up 21.78% compared to the same time last year, according to trading on a contract for difference (CFD) that tracks this benchmark index from Canada. Canada Stock Market Index (TSX) - values, historical data, forecasts and news - updated on August of 2025.

South Korea's main stock market index, the KOSPI, rose to 3169 points on August 22, 2025, gaining 0.86% from the previous session. Over the past month, the index has declined 0.47%, though it remains 17.29% higher than a year ago, according to trading on a contract for difference (CFD) that tracks this benchmark index from South Korea. South Korea Stock Market - values, historical data, forecasts and news - updated on August of 2025.

Euro Area's main stock market index, the EU50, rose to 5483 points on August 22, 2025, gaining 0.38% from the previous session. Over the past month, the index has climbed 2.60% and is up 11.70% compared to the same time last year, according to trading on a contract for difference (CFD) that tracks this benchmark index from Euro Area. Euro Area Stock Market Index (EU50) - values, historical data, forecasts and news - updated on August of 2025.

Crude Oil rose to 63.73 USD/Bbl on August 22, 2025, up 0.34% from the previous day. Over the past month, Crude Oil's price has fallen 2.32%, and is down 14.83% compared to the same time last year, according to trading on a contract for difference (CFD) that tracks the benchmark market for this commodity. Crude Oil - values, historical data, forecasts and news - updated on August of 2025.

Gold fell to 3,324.13 USD/t.oz on August 22, 2025, down 0.46% from the previous day. Over the past month, Gold's price has fallen 1.88%, but it is still 32.46% higher than a year ago, according to trading on a contract for difference (CFD) that tracks the benchmark market for this commodity. Gold - values, historical data, forecasts and news - updated on August of 2025.