Tower Research Capital LLC (TRC) is an institutional investment manager that files quarterly 13F reports with the SEC. As of Q4 2025, the fund manages $4.1B in reported equity holdings across 5114 positions. The largest holdings are AAPL (5.2%), NVDA (4.3%), MSFT (4.0%), AMZN (2.8%), GOOG (2.2%). The portfolio is concentrated in Other (86.0%), Communication Services (5.3%), Financial Services (2.2%). Data sourced from SEC EDGAR 13F filings (CIK 1533421).