--- type: "Topics" locale: "en" url: "https://longbridge.com/en/topics/39762829.md" description: "$Pro Ultrshrt Crude Oil(SCO.US) I just don't get it. Why does crude oil drop 10 points, but this only rises 8 points? Is the decay that big in one day? It's killing me." datetime: "2026-04-08T05:16:49.000Z" locales: - [en](https://longbridge.com/en/topics/39762829.md) - [zh-CN](https://longbridge.com/zh-CN/topics/39762829.md) - [zh-HK](https://longbridge.com/zh-HK/topics/39762829.md) author: "[Lesile](https://longbridge.com/en/profiles/12635382.md)" --- # $Pro Ultrshrt Crude Oil(SCO.US) I just don't get i… ### Related Stocks - [SCO.US](https://longbridge.com/en/quote/SCO.US.md) ## Comments (2) - **韭菜盒子2 · 2026-04-08T09:40:17.000Z**: What does wear and tear mean? How to avoid it? - **红绿肥瘦都要 · 2026-04-08T06:12:14.000Z**: The premium is very high.