account_balance

Investment manager · 13F filer · SEC CIK 932540

Group One Trading LLC

Reported value$3.27Bas of Sep 30, 2026
Positions2,141 624 new, 640 sold out
Top 10 weight15.0%MU alone is 4%
FiledNov 1041 days after quarter end

Portfolio · as of Sep 30, 2026

Where the money is

New or addedTrimmedHeld

Boxes show the top 12 stocks, sized against each other. The bar above shows how much of the fund they are. 13F only covers US-listed stocks, so foreign holdings and short positions are missing.

Show the top 12 as a list

What changed

Biggest moves since Jun 30, 2026

Filed Nov 10, 2026, compared with the Aug 14, 2026 filing
add_circleNew
arrow_upwardAdded
arrow_downwardTrimmed
remove_circleSold out

Where this data comes from. Insider trades, fund holdings, activist stakes and company results come from public SEC EDGAR filings (Forms 4, 13F, 13D/13G, 10-Q and 8-K).

This is data, not investment advice. About StockToast