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

Passing a single out-of-sample test does not mean a trading strategy will remain effective in all market conditions. A particular period may happen to favor the strategy, so we also need rolling backtesting to observe its performance across different time periods.

First, what is rolling backtesting?

Rolling backtesting involves repeatedly using past data, in chronological order, to develop or optimize a strategy, then testing its performance on a subsequent period of data that was no

#BTC跌4%

In my view, the area **$70K is becoming an important zone** for observing Bitcoin's movements. I prefer to wait for confirmation rather than rush to buy while the price is still under bearish pressure.

My strategy is to accumulate gradually if a strong reversal signal appears around $70K. However, if BTC manages to hold above $73K again, that could be an early confirmation that bullish momentum is starting to return.

For me, protecting capital is far more important than chasing opportunities. Don't FOMO; stay disciplined with risk management.

**Patience is the key. Let the market

$ETH The rebound is merely a correction; the bear market isn’t over!

Yesterday, ETH plunged from around 2064, successively breaking key levels like 2000 and 1950, and hit a low of 1893. The bears launched a powerful move, breaking straight through the bulls’ defenses!

Although it has rebounded from the lows, this looks more like a technical correction after the sharp drop and does not mean the trend has reversed.

That’s right—I’m still bearish for now. The 1940–1950 range is a key short-term resistance zone. If the rebound fails to break through it decisively, ETH could still retest the pre

📈 Since its first trading prices in 2010, Bitcoin has risen from $0.058 to over $68,000 today, an absolutely staggering increase of more than 122 million percent in just 16 years.
Bitcoin has weathered dozens of crises, several crashes exceeding 70%, government bans, platform bankruptcies, and a succession of spectacular bull cycles.
This chart traces more than 6,500 days of history, a financial and technological journey that seemed utterly improbable at the outset.

On Friday, amid inflation concerns and expectations of higher interest rates, Bitcoin fell below $70,000 for the first time since August, hitting a low of $67,449 and dropping as much as 4.4% intraday. It is currently around $68,600. Asian stocks and bonds also weakened as markets awaited US PPI data. Rising oil prices and inflation fueled expectations of Fed rate hikes, while concerns over tighter regulation added to the multiple macro pressures continuing to weigh on the crypto market.

What Is Volume-Price Divergence? How Is It Different from a Regular 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 shrink, traders may pay attention to whether volume-price divergence is occurring. But volume-price divergence is only an analytical clue; it does not mean the market will definitely reverse.

First, what is volume-price divergence?

Volume-price divergence refers to a mismatch between price movements an

What are support and resistance levels? Why do these price zones influence traders’ decisions, yet are not absolutely reliable boundaries?

In cryptocurrency trading, prices often rebound or retreat repeatedly in certain zones. Traders usually call these zones support and resistance levels. They can help analyze market structure, but they do not guarantee that prices will rebound or reverse.

First, what are support and resistance levels?

A support level is a zone where buying may strengthen and a price decline may temporarily slow; a resistance level is a zone where selling may increase and

Why do false breakouts sometimes occur after the price breaks through resistance?

In crypto markets, a price breaking through a key resistance level often attracts traders chasing the rally. But sometimes, the price quickly falls back into its original range just after breaking through, leaving traders who entered at a disadvantage. This phenomenon is called a false breakout and is one of the key risks to watch for in trading.

First, what is a false breakout?

A false breakout occurs when the price briefly breaks through an important support or resistance area but fails to stay beyond it, th

gate launches its third ipo access subscription for anthropic at an indicative $70–$78 per share, with subscriptions in usdt open until november 17. allocation is not guaranteed.

\#ANTHROPIC #IPO $GATE

SOL’s downside thesis from this morning’s outlook played out across the board, with the market blowing straight through the take-profit target.
The morning call gave a high-short setup at 81.5–82.0. Price peaked at 81.07 before promptly pulling back, then fell to 77.83. The levels were pinpoint accurate, and the downside far exceeded expectations.
True market intuition means knowing the resistance and support levels inside out: where price will turn and where it will break—all under control. #sol #黄仁勋辞职

It is impossible for $BTC to dump from $86k to $35k
Where were you when $BTC dumped from $11k to $3k in a month
The excuse: then there were no institutions, who told you 😂

China’s wealthy are certainly highly conscientious—look at the results! —
Data released by the State Taxation Administration:
More than 160 billion in personal income tax on offshore trust earnings has been voluntarily declared, with 120 billion already collected.
That’s enough to pay for 5 years of U.S. troops stationed in Japan, single-handedly driving up nationwide personal income tax revenue in October by nearly 90%!
Next up: stock investors and the middle class—tremble!

What Is Forced Liquidation? Why Can Even a Small Move in the Opposite Direction Put an Account at Risk of Liquidation?

In crypto derivatives trading, many traders focus on how much the price could rise while overlooking how much of a move in the opposite direction their account can withstand. When margin is insufficient to meet the exchange’s maintenance margin requirements, the platform may automatically close part or all of a position. This is forced liquidation.

First, why does forced liquidation happen?

After a position is opened, a move in the opposite direction causes unrealized losse

Today, $AKE pumped 83%
Currently price is entered cooling phase, Short correction is Possible towards 0.0042 - 0.004 😬

$XAU Gold broke below and reclaimed on the daily chart. Keep going long! The target near 4000 remains unchanged! If you’re not in a position yet, hurry and go long! Let’s go! Welcome aboard!

- The Challenge from 500U to 50000U Series -
1192.25, total assets are over 1,000 now—the account has doubled. I have to mark the occasion!
Today’s an epic crash. Here’s a little preview of the script: BTC$BTC has a long-term target of 58K. That’s how crypto is—brutal.
Rode a wave of NVIDIA$NVDA longs. Thanks, Huang; farewell, Huang. Keep positioning, keep working hard, and feel free to watch🌟

What Is Order Book Depth? Why Can a Large Order Cause Significant Price Swings When Liquidity Is Low?

In cryptocurrency trading, orders of the same size can have completely different execution outcomes in different market conditions. Sometimes a large order enters the market and barely moves the price; at other times, a single order can drive the price sharply up or down. One of the key factors behind this is order book depth.

First, what is order book depth?

An order book shows the limit buy and sell orders traders have placed at different prices. Order book depth reflects the quantity of

What Is Position Sizing? Why Can Oversized Positions Force You Out of the Market Early Even When Your Trading Strategy Has an Edge?

In cryptocurrency trading, getting the direction right is important, but how much capital you put into each trade also determines whether your account can survive in the long run. Even a strategy with positive expected returns can lead to losses that are difficult to recover from if your position is too large and an unexpected price move or a string of losses occurs.

First, what is position sizing?

Position sizing is the process of deciding how much capital to