GROUP ONE TRADING L P
Q2 2026 Form 13-F
CHICAGO, ILLINOIS
CIK 0000932540
· Institutional investment manager
$71.1B Reported Value Total
Reported value
$71.1B
Quarter over quarter
+15.5%
Holdings
2,151
Top-10 concentration
17.8%
Key People
Named on the latest Form 13-F filing — not necessarily an owner
Kyle Tondo-Kramer
Chief Compliance Officer
Filing Navigation
Coverage begins with the second quarter of 2013. Earlier quarters are not shown while their accuracy is being verified.
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Q2 2026 13F record
Q2 2026 13F filing summary
| Period of report | June 30, 2026 |
|---|---|
| Filed | August 13, 2026 |
| Form | 13F-HR |
| Reported value | $71.1B |
| Positions | 2,151 |
| Change in reported value | +36.2% |
| New positions | 644 |
| Exited positions | 651 |
| Position turnover | 46.2% |
| Top-10 concentration | 17.8% |
13F filings by quarter
| Quarter | Positions | Value |
|---|---|---|
|
Q2 2026 13F
Filed Aug 13, 2026
|
2,151 | $71.1B |
|
Q1 2026 13F
Filed May 13, 2026
|
2,158 | $52.2B |
|
Q4 2025 13F
Filed Feb 12, 2026
|
2,285 | $57.3B |
|
Q3 2025 13F
Filed Nov 12, 2025
|
2,236 | $56.9B |
|
Q2 2025 13F
Filed Aug 14, 2025
|
1,996 | $45.2B |
|
Q1 2025 13F
Filed May 14, 2025
|
1,908 | $34.5B |
|
Q4 2024 13F
Filed Feb 14, 2025
|
1,990 | $43.7B |
|
Q3 2024 13F
Filed Nov 14, 2024
|
1,675 | $35.1B |
|
Q2 2024 13F
Filed Aug 14, 2024
|
1,699 | $25.8B |
|
Q1 2024 13F
Filed May 10, 2024
|
1,715 | $26.0B |
|
Q4 2023 13F
Filed Feb 14, 2024
|
1,833 | $38.0B |
|
Q3 2023 13F
Filed Nov 9, 2023
|
1,868 | $29.8B |
|
Q2 2023 13F
Filed Aug 9, 2023
|
1,744 | $31.2B |
|
Q1 2023 13F
Filed May 12, 2023
|
1,783 | $27.7B |
|
Q4 2022 13F
Filed Feb 9, 2023
|
1,868 | $43.0B |
|
Q3 2022 13F
Filed Nov 9, 2022
|
1,833 | $50.9B |
|
Q2 2022 13F
Filed Aug 11, 2022
|
1,858 | $63.8B |
|
Q1 2022 13F
Filed May 12, 2022
|
1,935 | $101.0B |
|
Q4 2021 13F
Filed Feb 11, 2022
|
2,060 | $124.5B |
|
Q3 2021 13F
Filed Nov 12, 2021
|
1,988 | $92.6B |
33 earlier quarters on file — choose one from the quarter menu above.
Top 20 holdings · Q2 2026
| # | Holding | Reported value | % of portfolio |
|---|---|---|---|
| 1 | MU P MICRON TECHNOLOGY INC | $2.4B | 3.36% |
| 2 | MU C MICRON TECHNOLOGY INC | $2.0B | 2.78% |
| 3 | GLD C SPDR GOLD TR | $1.4B | 1.92% |
| 4 | SNDK P SANDISK CORP | $1.3B | 1.77% |
| 5 | TSLA C TESLA INC | $1.2B | 1.66% |
| 6 | META C META PLATFORMS INC | $1.0B | 1.45% |
| 7 | REMX P VANECK ETF TRUST | $1.0B | 1.42% |
| 8 | MSFT C MICROSOFT CORP | $892.0M | 1.25% |
| 9 | SNDK C SANDISK CORP | $847.0M | 1.19% |
| 10 | INTC C INTEL CORP | $697.3M | 0.98% |
| 11 | AAPL C APPLE INC | $680.4M | 0.96% |
| 12 | TSLA P TESLA INC | $673.8M | 0.95% |
| 13 | UNH C UNITEDHEALTH GROUP INC | $670.7M | 0.94% |
| 14 | NVDA C NVIDIA CORPORATION | $631.7M | 0.89% |
| 15 | REMX C VANECK ETF TRUST | $608.1M | 0.86% |
| 16 | LLY C ELI LILLY & CO | $565.9M | 0.8% |
| 17 | 874039950 P TAIWAN SEMICONDUCTOR MANUFAC | $535.5M | 0.75% |
| 18 | AMD C ADVANCED MICRO DEVICES INC | $531.3M | 0.75% |
| 19 | AMD P ADVANCED MICRO DEVICES INC | $491.3M | 0.69% |
| 20 | GOOG C ALPHABET INC | $460.7M | 0.65% |
Values as reported on the Q2 2026 Form 13F. Every position is in the holdings table below.