What is look-ahead bias? Why can accidentally using future information in a backtest make an ordinary strategy look exceptionally good?

In cryptocurrency quantitative trading, a strategy’s high historical returns do not necessarily mean it has a genuine trading edge. If information that was not yet available at the time is used during a backtest, it can create look-ahead bias, allowing the strategy to know in advance what will happen and produce results that cannot be replicated in real trading.

First, what is look-ahead bias?

Look-ahead bias refers to mistakenly using future information wh

BtcsosSignalSharing 30 minutes ago

📡 Signal card · just captured
Source: BlackFrame channel Asset: $DOT Short entry: 0.823 Stop loss: 0.8427 Targets: 0.8033 / 0.7923 / 0.7813 Time: No specific time noted; refer to the channel post
Come to think of it, I just reposted his $PUMP trade this morning, and here it is again—an old familiar face 😂
As usual: I only handle reposting; the signal is from the KOL. Whether to follow and how much to risk are up to you all. The market can go crazy, but risk management shouldn’t.
Shared as a personal record, not investment advice. #TheFed adjusts its 2027 rate meeting schedule, reducing reg

DOT-1.47%

PUMP-1.06%

Trenches

mihao

4Cxj...pump

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Change

24h Vol

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AGT

0x5d...e274

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FOOD

FTu5...pump

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IDOL

0x3b...ab07

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2T56...pump

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ThisIsTranslateContent:Qiyu 2 hours ago

What Is the Long/Short Ratio? Why Doesn’t a Higher Number of Longs Mean the Market Will Definitely Rise?

In cryptocurrency trading, many people see the long/short ratio rise and assume bullish sentiment is strengthening, then choose to go long. But market sentiment and actual price movements do not always align. The long/short ratio can help us understand traders’ position bias, but it cannot directly determine how the market will move next.

First, what is the long/short ratio?

The long/short ratio measures the relative proportion of long and short positions in a particular market. However,

Cryptoast 2 hours ago

🎮 Kalshi is hiring a “GTA 6 researcher” for $100,000 to $120,000, plus a $15,000 bonus, to stream the game starting at launch on November 19.

UnaYouna 2 hours ago

As for SOL’s move today, those who saw the strategy this morning should know. $SOL

This morning, I clearly outlined a short setup in the 81.8–82.5 range, with an initial target of 80.2, followed by 79.0.

The market did not disappoint us. It continued to fall, reaching a low of 77.92.

Many people like to wait until after the market has moved to look for a direction, but truly valuable analysis means anticipating the move before it begins.

I don’t need to chase the market every day. I just need to identify key levels, map out the trading logic, and manage risk in advance.

Getting the direc

SOL-0.74%

ThisIsTranslateContent:Qiyu 2 hours ago

What is trading volume? Why can changes in volume during a price rally help us judge whether the trend is sustainable?

In crypto trading, price tells us which direction the market is moving, while volume helps us understand the level of trading activity behind a move. Analyzing the two together is more useful than looking at price alone, but volume cannot directly predict future price movements.

First, what is trading volume?

Trading volume refers to the amount of an asset traded or the value of trades executed within a specific period. Rising volume usually means market participation is in

Shani556556 20 minutes ago

Double Rewards in the Convert Lucky Draw

https://www.gate.com/campaigns/7021?ref=VFLFVAWKBQ&ref_type=132

- Trade $100 using Convert
- Pair ___ USDT / USDG

USDG+0.02%

SmartBrother 20 minutes ago

$AKE This market maker has really left me at a loss for words. I went in with $10,000 at 5x leverage, and they somehow dragged me into a $20,000 loss. With the daily chart looking like this, who would dare short? At this point, is there any way for the bears to survive? I give up. I can't hold on anymore—I’m cutting my losses and getting out.
$BARD I told you this morning: hold steady and don’t let go. There’s definitely going to be a 200-point explosive rally this week that buries all the shorts. With a $1,000 position at 10x leverage, I’ve already raked in $1,000 just from funding fees, an

AKE+6.07%

BARD-1.24%

ETH-1.26%

ThisIsTranslateContent:Qiyu 2 hours ago

How can you identify market regimes? Why might the same trading strategy perform very differently in bull, bear, and sideways markets?

In cryptocurrency trading, many people look for a fixed strategy that they hope will keep generating profits regardless of how market conditions change. But markets do not always behave the same way. When trends, volatility, and capital flows change, the same strategy can perform quite differently.

First, what is a market regime?

A market regime refers to the overall characteristics of market activity during a given period. It can generally be classified as

WishForColdWeather 32 minutes ago

What is a long liquidation? Why can the market experience a cascading decline when prices fall?

In the cryptocurrency market, prices sometimes initially dip only slightly, then suddenly accelerate downward. In addition to selling pressure in the spot market, one possible cause is long liquidations.

Understanding the liquidation mechanism helps traders recognize leverage risks and analyze why some market moves can become unusually volatile in a short period of time.

First, what is a long liquidation?

Long traders buy assets or open bullish contract positions, expecting prices to rise. When

ThisIsTranslateContent:Qiyu 2 hours ago

What Is the Sharpe Ratio? How Can You Measure Whether a Trading Strategy’s Returns Are Worth the Risk?

In cryptocurrency trading, a high return does not necessarily mean a strategy is good. If a strategy can generate high returns but comes with sharp volatility and significant drawdowns, we need to further assess whether those returns are worth the risks involved. The Sharpe ratio is one tool that can help answer this question.

First, what is the Sharpe ratio?

The Sharpe ratio measures the excess return earned by a portfolio or trading strategy per unit of volatility risk. Generally, the hi

CryptoEshu28 minutes ago

Eshu Live_Over all crypto market updates

LIVE1,864

MountaintopCapital'sMultiplied 2 hours ago

You can’t buy all the dips, you can never buy them all—there are just too many to buy them all

BTC-0.65%

ThisIsTranslateContent:Qiyu 2 hours ago

What Is Open Interest (OI)? Why Doesn’t Rising Open Interest Necessarily Mean Prices Will Rise Soon?

In crypto futures trading, many people see open interest rising steadily and assume the market is about to rally. But open interest reflects the size of contracts that have not yet been closed, not simply buying capital. To properly understand market movements, OI must be analyzed alongside price, trading volume, and funding rates.

First, what is OI?

Open interest (OI) refers to the total number of contracts that have not yet been closed at a given point in time. OI may increase when new con

ThisIsTranslateContent:Nanxun 34 minutes ago

What does it mean when price falls, trading volume increases, and OI rises at the same time?

In crypto futures markets, if prices continue to fall while trading volume increases and open interest (OI) also rises, many traders immediately conclude that bears are dominating the market and the decline may continue.

This interpretation has some value, but it should not be treated as a definitive trading signal. The combination of these three indicators needs to be understood in the context of market structure and actual trading activity.

First, what does a price decline mean?

A price decline m

cryptoStylish42 minutes ago

BTC falls below $71k, hitting its lowest level since September! The $70k level is under threat—where

LIVE3,671

Gor88 an hour agoBearish

$XAUT ‌🔴SHORT · 1d 🔴
· R:R 1:3 · 60%

Entry
3 887
Stop
3 964,7 −2%

Take 1 +2%
3 809,2
Take 2 +4%
3 731,5
Take 3 +6%
3 653,8
Take 1 +2%
3 809,2
Take 2 +4%
3 731,5
Take 3 +6%
3 653,8

DYOR 🤔
Wishing everyone profits 💲💪💲🤝

XAUT+0.34%

CryptoMishu2 hours ago

GateSquare2026-11-13 03:24:38

📊 U.S. initial jobless claims exceed expectations—are hopes for rate cuts back?
Initial jobless claims rose to 200k in the latest week, above expectations of 194k, showing signs of a slight cooling in the labor market.
But the thing is, 200k is still historically low. 👀
📉 Optimists: The labor market is starting to cool, which may ease pressure on the Fed to keep rates high.
📈 Cautious observers: CPI just came in hotter than expected, inflationary pressure remains, and one week of employment data is not enough to change the policy outlook.
With a cooling labor market and stubbornly high inflation emerging at the same time, which signal will the Fed focus on next?
💬 If employment continues to weaken but inflation stays high, would you be more bullish on a BTC and U.S. stock rebound, or choose to keep waiting?
Come to Gate Square with #美国初请失业金人数高于预期 to share your market outlook, trading strategy, or portfolio changes.
Do you think the market needs cooling inflation more right now, or resilient employment?

BTC-0.67%

WishForColdWeather 40 minutes ago

Why do large orders sometimes need to be executed in batches? Is splitting an order always more cost-effective?

In the crypto market, placing a large order all at once may not be the best option. The order may consume liquidity across multiple price levels, causing the average execution price to deviate from expectations. As a result, some traders may consider splitting a large order into several smaller ones.

But splitting orders is not a sure-fire way to save money. It addresses execution challenges; it does not guarantee trading profits.

First, why might a large order affect the executio

DragonFlyOfficial an hour ago

#USOctoberPPIComingSoon

US October PPI Coming Soon: Will Producer Inflation Change the Market’s Direction?

Before vs Now

Before this week, investors were already watching inflation through consumer prices. Now, attention is shifting toward another important indicator: the U.S. Producer Price Index (PPI) for October 2026.

The upcoming report could offer fresh clues about business costs, pricing pressure, and the future direction of U.S. monetary policy. For crypto traders, stock investors, and anyone following global markets, this is an important economic event to understand.

PPI Basics

XAUT+0.30%

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