Nierenberg Investment Management Company, LLC is an institutional investment manager that files quarterly 13F reports with the SEC. As of Q1 2026, the fund manages $201M in reported equity holdings across 44 positions. The largest holdings are ECNS.SN (27.5%), EQT (16.8%), CRTO (9.4%), LYFT (8.6%), KBR (7.1%). The portfolio is concentrated in Other (81.8%), Energy (16.9%), Technology (1.1%). Data sourced from SEC EDGAR 13F filings (CIK 1282683).