§ 13F · FUND PROFILE
GROUP ONE TRADING LLC.
Options market maker, proprietary trading
AUM · $56876.5T (13F)Positions · 8852Turnover · 95% · Q4Filed · Feb 12, 2026
CONCENTRATION
14%
Top 10 holdings
NEW BUYS
+1305
+$1335.2T deployed
EXITS
0
No exits
SECTOR SHIFT
TECHNOLOGY → OTHER
-4pp · +3pp
3YR HIT RATE
—
Top-5 overlap
§ 01 · TOP HOLDINGS
The book · Q4 2025
FILED FEB 12, 2026
| # | Ticker | Name | Shares | $ value | % port | Δ Q4 |
|---|---|---|---|---|---|---|
| 1 | TSLA | TESLA INC | 2.70M | $1215.4T | 2.1% | −4% |
| 2 | META | META PLATFORMS INC | 1.84M | $1211.5T | 2.1% | +31% |
| 3 | UNH | UNITEDHEALTH GROUP INC | 3.45M | $1138.9T | 2.0% | +13% |
| 4 | NVDA | NVIDIA CORPORATION | 4.32M | $805.9T | 1.4% | −7% |
| 5 | GLD | SPDR GOLD TR | 1.85M | $735.0T | 1.3% | +64% |
| 6 | LLY | ELI LILLY & CO | 626K | $672.3T | 1.2% | +1% |
| 7 | — | ALIBABA GROUP HLDG LTD | 4.19M | $614.1T | 1.1% | −27% |
| 8 | AAPL | APPLE INC | 1.91M | $518.5T | 0.9% | −13% |
| 9 | TSLA | TESLA INC | 1.12M | $504.2T | 0.9% | −11% |
| 10 | MSFT | MICROSOFT CORP | 1.01M | $488.8T | 0.9% | −18% |
§ 02 · SECTOR ALLOCATION
Where the money is
Other38.1% (+3pp)
Technology13.6% (−4pp)
Semiconductors8.4% (±0)
Media6.6% (−1pp)
Financial Services4.6% (±0)
Health Care4.2% (±0)
§ 03 · THE GROUP SIGNAL
AC read
GROUP ONE TRADING LLC is a Systematic / Quant fund managing $56876471.9 trillion in assets. The fund runs a massive portfolio of 8,852 positions, broad diversification across holdings. Trading activity is aggressive at 95% quarterly turnover, with 1305 new positions and 0 exits last quarter. Top sector allocations: Other (38%), Technology (14%), Semiconductors (8%).
Read the full dossier →§ 04 · FILING HISTORY
Q-by-Q deltas
2 FILINGS
Q4 2025
Busy quarter
+1305 buys · −0 exits · 6860 changed
Q3 2025
Steady book
+0 buys · −0 exits · 0 changed
Q1 2025
Steady book
+0 buys · −0 exits · 0 changed
Q4 2024
Steady book
+0 buys · −0 exits · 0 changed