JANE STREET GROUP, LLC is an institutional investment manager that files quarterly 13F reports with the SEC. As of Q2 2026, the fund manages $1.21T in reported equity holdings across 6546 positions. The largest holdings are SPY (16.9%), IWM (5.6%), MU (5.1%), NVDA (3.3%), AMD (2.9%). The portfolio is concentrated in Other (90.0%), Technology (3.3%), Communication Services (3.3%). Data sourced from SEC EDGAR 13F filings (CIK 1595888).