Contract Trading
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预测市场赔率和比特币期权价格不一致时，交易者不能只看套利表面
一篇近期论文比较预测市场门槛合约和期权隐含价值，提醒交易者重视场所分割和结算差异。
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Prediction-market odds and bitcoin options can disagree for reasons traders should respect
A recent paper comparing Polymarket-style threshold contracts with option-implied values shows why fragmented venues are not always easy arbitrage.
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使用 Bybit 快捷交易前，先决定单向持仓还是双向持仓
持仓模式会改变反向按钮的含义，合约交易者应先定义平仓逻辑，再使用快捷下单。
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Bybit one-way and hedge mode should be chosen before quick trading shortcuts
Position mode changes how opposite-side taps behave, so futures traders should define close logic before using fast-entry tools.
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交易机器人接触真实资金前，先设置子账户和 API 权限边界
用子账户、IP 限制、交易品种白名单和最小权限原则，把自动化交易风险先关进笼子。
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Use sub-accounts and API limits before a trading bot touches real funds
A practical workflow for separating strategy risk, withdrawal risk and API permissions before automated crypto trading starts.
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日历价差能降低腿部风险，但不能让期货展期变成无风险
CME 的期货价差教育说明，展期交易者在使用日历价差前仍要理解基差、合约月份流动性、保证金和执行风险。
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Calendar spreads can reduce legging risk, but they do not make futures rolls risk free
CME education on futures spreads shows why traders rolling exposure should understand basis, contract-month liquidity, margin and execution before using calendar spreads.
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设置 Binance 跟踪止损，要先看回调逻辑而不是事后凭感觉
Binance 跟踪止损需要把激活价、回调比例和触发价格类型同波动率、深度和清算距离匹配起来，而不是只想着锁定利润。
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Set Binance trailing stops by callback logic, not by hope after a move
A Binance trailing stop needs an activation price, callback rate and trigger choice that match volatility and liquidation risk, not just a desire to protect profit.
