What's the difference between XLB and Excel?

They look a bit like XLB since they share two of the same letters, but the latter ones are actual spreadsheet files that can hold readable text, formulas, pictures, etc. They don't open like XLB files but instead like regular Excel files (double-click them or use the File menu to read/edit them).

How do I open an XLB file?

How to Open XLB Files. An XLB file can be opened with Microsoft Excel but it's important to realize that it just stores customization information, not actual spreadsheet data. This means you can't just double-click the file and expect it to open with any sort of readable information.

What happens if I delete an XLB file?

Deleting an XLB file used by Excel will delete all your toolbar customizations (it's better to rename it to toolbar.OLD ). A new XLB file is created the next time you open Excel. Still Can't Open It?

Is XLB a good investment?

Its limited selection universe means it is heavily concentrated, and individual holdings must be taken into consideration before investing in this fund. Not surprisingly, XLB favors large-caps.