Error Parsing BRK.B 260206C00495000

[AlexCatarino]

Expected Behavior

Symbol.ParseOptionTickerOSI parses BRK.B 260206C00495000

Actual Behavior

The following exception has occurred: Invalid ticker format BRK.B 260206C00495000`

Potential Solution

Add ./ to @"^([A-Z0-9]+)\s*(\d{6})([CP])(\d{8})$" -> @"^([A-Z0-9\.]+)\s*(\d{6})([CP])(\d{8})$"

Reproducing the Problem

Add [TestCase("BRK.B 260206C00495000", SecurityType.Option, OptionStyle.American, "BRK.B", "BRK.B", "BRK.B", 495.00, "2026-02-06")] to SymbolRepresentationTests.ParseOptionTickerOSI

Checklist

• I have completely filled out this template
• I have confirmed that this issue exists on the current master branch
• I have confirmed that this is not a duplicate issue by searching issues
• I have provided detailed steps to reproduce the issue

[aiSynergy37]

Opened fix PR: #9364

[AlexCatarino]

The fix has already been submitted #9343. Please check out the PR and/or the issues to see if they have been addressed.