নলেজ লাইব্রেরি

The post asks why a BigQuant strategy raises a parser error near FROM. Its factor expression defines several intraday features, including a bid-ask spread measure, weighted order-book volume imbalance, early-session price movement, and a volume ratio, then…

The document describes a TD-style timing system attributed to Thomas DeMark. It begins with a setup: compare each close with the close a fixed number of bars earlier, and require that relationship to persist for a specified run of bars. A falling sequence…

The discussion explains how a VeighNa CTA strategy can retrieve live long and short position records, inspect their average price, volume, and unrealized profit or loss, and use that information to trigger stop orders. It identifies the position lookup key…

This brief note describes a higher-timeframe version of a Change of Volatility indicator. Its main feature is a user-selectable chart period, with a four-hour period shown as the default. The indicator is intended to display volatility-change information…

The document describes an indicator that modifies a simple moving average using a configurable lag reduction factor. Users choose the lookback period, applied price, and factor. The calculation raises the ratio of the current moving average to its previous…

This Chinese-language post outlines a stock screen combining daily amplitude above 1, a condition described as main-force control on the prior day, and a newly formed KDJ golden cross. It interprets the range condition as a sign of greater movement, the…

The document introduces a recursive median oscillator based on John Ehlers’s discussion of recursive median filters. Median filtering is presented as a way to reduce the influence of extreme price or volume observations that can distort conventional…

This Chinese-language note proposes a daily, after-close stock screen requiring MACD to be positive and the reported daily position-increase share to exceed 5%. It then ranks qualifying stocks by descending popularity or heat, with an example that returns…

This Chinese-language strategy note describes a stock-selection screen combining turnover between 3% and 12%, a rising DEA measure, and a 20-day moving average above the 120-day average. It presents the screen as a way to find stocks with trading activity…

The document outlines methods for investigating suspicious cryptocurrency activity through transaction graphs, address clustering, and tracing funds across chains. It explains that investigators may infer common control from shared transaction inputs, but…

The document explains how to use ThetaData as a historical data source for LumiBot backtests covering stocks and options, as well as other asset types. It supports minute and daily bars directly; hourly bars can be built from minute data. Downloaded data is…

This Expert Advisor variation chooses each initial trade direction randomly, opening either a buy or a sell from a random-number draw. It starts with a configured base lot size, while stop loss and take profit can be disabled. The position-sizing rule…

This short description presents an indicator that compares a fast and a slow zero-lag triple exponential moving average. Their cross is used to signal a change in the indicator's view of market direction, making the pair a simple trend-reading tool based on…

This post outlines a China A-share screening rule for stocks classified in the metaverse sector. It first describes selecting names with prior-day turnover above a threshold and positive institutional activity, then gives a final rule using prior-day…

This post reports a suspected mismatch in BigTrader v35 minute backtests after an ETF share split. The author says the strategy-visible position fields—quantity, cost price, last price, and market value—appeared to retain their pre-split values, while a…

The document explains an automatic take-profit and stop-loss feature that attaches predefined exit levels to each newly opened position. The trader can set thresholds using a fixed pip distance, a percentage of account balance, or technical price levels.…

The document presents a Chinese equity screening rule that selects stocks with amplitude above 1, circulating market capitalization above 10 billion yuan, and at least two limit-up events over the prior 500 days. It frames the combination as a way to find…

The post asks why a five-minute technical indicator in live trading appears to update three to four seconds after a period ends, even though historical testing updates it at the period boundary. The author reports connecting to OKEX futures from a rented…

This post describes a Chinese stock screen based on daily amplitude, circulating market capitalization, and association with a robotics concept. Its narrative specifies amplitude above 1, a market-cap threshold above 10 billion yuan, and a cap below 10…

This BigQuant assignment asks learners to modify a classic quantitative strategy by adding an indicator, then search across hyperparameters. It directs them to collect the historical performance curve for every parameter configuration into a data frame, plot…

This post presents a Chinese equity screening rule combining RSI below 65, a rising KDJ K line, and an amplitude measure above 1. The accompanying indicator reference uses a 14-period RSI, a 9-period stochastic calculation with 3-period smoothing, and…

This post describes a EUR/USD and GBP/USD strategy that seeks entries during pullbacks within an established intraday trend. It uses 5-period and 8-period Wilder averages alongside an 89-period simple average. During an early-day window, the averages must be…

The document proposes a Chinese equity screen based on a daily price range above a stated threshold, a product combining the prior day's turnover rate with the ratio of current auction volume to prior volume, and a closing price below 12. It frames these…

This weekly market review summarizes Chinese economic and financial developments for August 8–12, 2022. Its macro section reports trade growth and foreign-exchange reserve changes, alongside selected global policy and company news. The market section…