GROUP ONE TRADING LLC

One notable data point is an unusually large “Unknown” sector allocation of $20.05 billion (≈35.3% of portfolio). That degree of unclassified value materially reduces the visibility of sector tilts and suggests either heavy use of non-standard instruments, offshore/foreign-listed securities with incomplete sector tags, or reporting classification issues. This should be reconciled before drawing firm conclusions about sector-level risk.

Key Holdings and Their Significance

• Aggregated issuer concentrations (selected):
  • Tesla, Inc. — combined lines ≈ $1.82B, ≈ 3.2% of portfolio.
  • Meta Platforms, Inc. — combined lines ≈ $1.71B, ≈ 3.0%.
  • UnitedHealth Group, Inc. — combined lines ≈ $1.43B, ≈ 2.5%.
  • Alibaba Group Holding Ltd — combined lines ≈ $1.36B, ≈ 2.4%.
  • NVIDIA Corporation — combined lines ≈ $1.18B, ≈ 2.1%.
  • Microsoft and Apple — each ≈ $0.83B, ≈ 1.46% each.
• Top-10 aggregated exposure: summing the largest duplicate-corrected names (Tesla, Meta, UnitedHealth, Alibaba, Nvidia, Microsoft, Apple, Robinhood, Xunlei, SPDR Gold Trust) yields approximately $11.1B or roughly 19–20% of the portfolio. This indicates moderate concentration in the largest convictions while leaving substantial remaining diversification.
• Sector/strategy themes evident in the top holdings:
  • Technology and internet platforms (Meta, Alphabet, Microsoft, Apple, Netflix, Alibaba, PDD, Applovin).
  • Semiconductors and AI infrastructure (Nvidia, Broadcom, AMD, TSMC, ASML, Intel, CoreWeave).
  • Fintech/crypto-exposed names (Robinhood, Coinbase, Core Scientific; note some of these tickers also appear in exits—see data caveats).
  • Commodities/precious metals as hedges (SPDR Gold Trust ≈ $595.7M aggregate, iShares Silver ≈ $169.2M).
  • Health care exposure via UnitedHealth (~$1.43B) and Eli Lilly (~$0.66B combined across entries).