What Is Rolling Backtesting? Why Is One Out-of-Sample Test Still Not Enough to Prove a Strategy Is Reliable?

A trading strategy passing one out-of-sample test does not mean it will remain effective in all market conditions. A particular period may happen to suit the strategy, so we also need rolling backtests to observe its performance across different time periods.

First, what is rolling backtesting?

Rolling backtesting involves repeatedly using past data to develop or optimize a strategy in chronological order, then testing its performance on a subsequent period of data that was not used

$1.47 Billion Wiped from the Crypto Market 🥹
Most of the long positions were worth $1.3 billion

#NVIDIAEarningsWeekTrading

𝗡𝗩𝗜𝗗𝗜𝗔 𝗘𝗮𝗿𝗻𝗶𝗻𝗴𝘀 𝗪𝗲𝗲𝗸 𝗧𝗿𝗮𝗱𝗶𝗻𝗴 𝗖𝗵𝗮𝗹𝗹𝗲𝗻𝗴𝗲: 𝗖𝗮𝗻 𝗬𝗼𝘂 𝗧𝘂𝗿𝗻 𝗠𝗮𝗿𝗸𝗲𝘁 𝗔𝗰𝘁𝗶𝘃𝗶𝘁𝘆 𝗜𝗻𝘁𝗼 𝗮 𝗥𝗲𝘄𝗮𝗿𝗱 𝗢𝗽𝗽𝗼𝗿𝘁𝘂𝗻𝗶𝘁𝘆?

📊 𝗕𝗲𝗳𝗼𝗿𝗲 𝘃𝘀. 𝗡𝗼𝘄: 𝗘𝗮𝗿𝗻𝗶𝗻𝗴𝘀 𝗪𝗲𝗲𝗸 𝗛𝗮𝘀 𝗮 𝗡𝗲𝘄 𝗢𝗽𝗽𝗼𝗿𝘁𝘂𝗻𝗶𝘁𝘆

Before, NVIDIA earnings week was mainly a period when traders watched company results, followed market reactions, and tried to understand how new information could affect prices. Now, Gate has introduced an NVIDIA trading competition with a promotional reward mechanism featuring a 100% win rate.

What Is Price-Volume Divergence? How Is It Different from a Normal Decline in Trading Volume?

In crypto markets, price and trading volume do not always move in sync. When prices continue to rise while trading volume gradually declines, or prices keep falling while trading volume continues to contract, traders may consider whether price-volume divergence is emerging. But price-volume divergence is only an analytical clue; it does not mean the market will necessarily reverse.

First, what is price-volume divergence?

Price-volume divergence refers to a mismatch between price movements and chang

With the Dollar Strengthening or Weakening, Which Is Truly a Friend to the Crypto Market?

Many people believe that when the dollar falls, Bitcoin rises; when the dollar rises, Bitcoin falls. But real financial markets are far more complex than this simple rule.

The dollar is a key pricing currency in the global financial system. When it strengthens, it often means global capital is reassessing the U.S. economy, interest rates, and risk-return prospects. If expectations for U.S. interest rates continue to rise, dollar-denominated assets may become more attractive, while other risk assets coul

Only after seeing these three did I realize…
So that’s what it meant, damn…

In the future, starting a business may no longer require hiring a whole team upfront.

Gate founder Dr. Han was recently invited to speak at the Oxford Union, where he shared his 13 years of entrepreneurial experience and introduced an interesting concept: Boss + AI.

Put simply, one person acts as the boss, while AI helps get the work done.

In the past, starting a business meant needing a programmer to build a website, an operations person for promotion, and someone to analyze the market. Now, with AI, one person can handle many of these tasks alone.

But there’s a very real question here.

What Is Overfitting? Why Can More Perfect Parameters Make a Strategy More Fragile?

A trading strategy may perform almost perfectly in historical backtests, with a high win rate, a smooth return curve, and a very small maximum drawdown, making it seem as though it has found a pattern in the market. But once it enters the live market, it may suffer frequent losses. One important reason for this is overfitting.

First, what is overfitting?

Simply put, it means a strategy has adapted too closely to specific fluctuations and random events in historical data, without truly identifying patterns tha

What Is the Difference Between Market Orders and Limit Orders? How Should You Choose in Different Market Conditions?

In cryptocurrency trading, the order type you use affects not only execution speed but also the actual execution price. Market orders and limit orders are the two most common order types. Understanding the difference between them can help reduce unnecessary trading costs.

First, what is a market order?

A market order is an order executed as quickly as possible at the currently available market price. Its advantage is that it can usually be filled quickly, but the final execut

Why does a larger account loss require a higher return to break even?

There is a mathematical principle in trading that is easy to overlook: the percentage loss and the return needed to break even are not equivalent. The deeper the account loss, the harder it is to recover to the original capital level.

First, losses and breaking even are not symmetrical. Suppose an account has 100k USDT. After a 30% loss, only 70k USDT remains. To get back to 100k, it needs to rise by about 42.9%, not just earn back 30%.

Second, the deeper the loss, the greater the recovery pressure. After a 50% loss, the

#白宫提交CFTC与SEC两党委员提名
#Gate直通IPO第三期Anthropic
White House Nominates Four SEC and CFTC Commissioners: Will Bipartisan Leadership Accelerate America’s Crypto Regulatory Clarity?

On November 12, 2026, the White House formally transmitted four bipartisan nominations to the United States Senate to fill vacant commissioner seats at the Securities and Exchange Commission and the Commodity Futures Trading Commission. Evaluating the regulatory landscape on November 13, 2026, this move signals a deliberate effort to stabilize leadership across America’s two primary market watchdogs at a pivotal juncture

What Is Slippage? Why Isn’t the Price You See When Placing an Order Necessarily the Final Execution Price?

In cryptocurrency trading, many people see one price when placing an order, only to find that the actual price is different after execution. This phenomenon is commonly known as slippage. It may seem like only a slight price difference, but in highly volatile markets, large trades, or leveraged trading, it can significantly affect trading costs and the final outcome.

First, what is slippage?

Slippage is the difference between the expected execution price and the actual execution price.

What Is a Funding Rate? Why Should Perpetual Contract Traders Pay Attention to It?

In the cryptocurrency market, perpetual contracts have no fixed expiration date. The funding rate mechanism helps keep contract prices relatively close to spot prices. For those who trade contracts frequently, the funding rate not only affects holding costs but can also offer clues about market sentiment.

First, what is a funding rate?

A funding rate is a periodic exchange of fees between long and short perpetual contract holders. Typically, when the funding rate is positive, longs pay shorts; when it is nega

Spot-Futures Basis Widens: What Exactly Is the Market Pricing In?

In crypto markets, beyond price, trading volume, and funding rates, there is another metric worth watching: basis.

Sometimes, Bitcoin's spot price changes little, while its futures price is significantly higher than spot; at other times, the futures price is lower than spot. This difference is not merely a numerical change—it may also reflect differing expectations about future prices, funding costs, and demand for positions.

First, understand what basis is.

Basis usually refers to the difference between the futures price an

Bitcoin has fallen below 70,000
68279

What Is the Market Pricing When the Spot-Futures Basis Widens?

In the crypto market, besides price, trading volume, and funding rates, there is another metric worth watching: the basis.

Sometimes, Bitcoin's spot price changes little, while its futures price is significantly higher than spot; at other times, the futures price is lower than spot. This difference is more than just a numerical change—it may also reflect differing expectations about future prices, funding costs, and demand for positions.

First, understand what the basis is.

The basis usually refers to the difference between the

Why can trading strategies that perform well in backtests fail in live markets?

A trading strategy may deliver strong returns and a high win rate in historical backtests, while keeping its maximum drawdown under control, yet produce very different results once deployed in the market. The problem may not necessarily lie in the strategy itself; it may also stem from the gap between backtesting and live trading.

First, historical data does not represent the future. Backtesting can only evaluate a strategy’s performance under specific historical market conditions. Market structure, volatility, a

#DrHanOxfordUnion.

🤖 **My Perspective: The Future Belongs to Those Who Master AI**

In my opinion, all three are important: creativity, decision-making, and execution. However, if I had to choose one, I would choose **execution**.

AI can help generate ideas, analyze data, and speed up work. But without concrete action and sound decisions, all ideas will remain plans.

In the AI era, you don't need a large team to build something extraordinary. With a clear vision, creativity, and making the most of AI, even a solo founder can create great opportunities.

**AI is the tool. Vision is the dire