Contract Trading

Kraken、Binance 和 OKX 的差异不只是杠杆倍数，交易者更应比较抵押品、地区可用性、流动性和退出工具。

Kraken, Binance and OKX compete on liquidity, product breadth and leverage, but traders should rank platforms by collateral clarity, regional access and exit tools.

Kraken 衍生品交易者应在开仓前确定保证金模式、杠杆和退出逻辑，因为持仓建立后模式不能随意切换。

Kraken derivatives traders should decide margin mode, leverage and exit logic before entry because the mode cannot be switched after the position is open.

永续合约资金费率可以反映多空失衡，但交易者应先把它当作会改变盈亏结构的持仓成本。

Perpetual futures funding can show market imbalance, but traders should first treat it as carry that changes position economics.

止盈止损不是下单后的补丁，而是开仓前就要写清楚的失效点、目标位和执行方式。

Take-profit and stop-loss controls are most useful when the trader defines invalidation, target and execution type before opening a futures position.

比特币短线不只看现货价格，还要结合 ETF 流向、Coinbase 溢价和芯片股带动的风险偏好。

Bitcoin remains tied to ETF flows, the Coinbase premium and chip-led risk sentiment, so spot price alone is not enough for short-term positioning.