DOSSIER · 13F-HR · Q1 2026
GROUP ONE TRADING LLC
ONE TRADING's pension fund based in San Francisco, CA — $52.2B in tracked AUM across 8,022 positions as of Q1 2026.
OT
ONE TRADING·San Francisco, CA·Pension Fund
CIK 0000932540 · last filed Mar 31, 2026
AI Analysis · Q1 2026 · Q1 2026
Portfolio Overview
Group One Trading LLC reports a $56.88 billion 13F portfolio as of 2025-09-30, up 25.8% from $45.20 billion on 2025-06-30. The filing lists 8,852 holdings, which—together with numerous repeated tickers on separate lines—indicates a very large, highly fragmented book (many small positions and multiple entries per issuer). The largest single reported line is Tesla at $1.26 billion (2.21% of the portfolio), but duplicate lines for the same issuer mean single-line percentages un...
Quarter at a glance — Q1 2026
Position-change comparison pending.
No quarter-over-quarter changes available.
Top 10 holdings
By portfolio weight as of Q1 2026.
Filing history
Filing history loading…