Needham Aggressive Growth Fund Retail Class (NEAGX) is an open-end mutual fund managed by Needham Asset Management, LLC that seeks long-term, tax-efficient capital appreciation by investing principally in domestic growth equities, with at least 65% of its total assets allocated to equity securities of issuers listed on nationally recognized securities exchanges; it employs a "Hidden to Quality Compounders" three-phase investment strategy targeting small-cap and micro-cap companies with high growth potential, transitioning them toward operational excellence and sustained compounding, benchmarked against the Russell 2000 Growth Index. The fund offers Retail Class shares (NEAGX, inception September 4, 2001) and Institutional Class shares (NEAIX, inception December 30, 2016), with a net expense ratio of 1.60% for the Retail Class, a minimum initial investment of $2,000 ($1,000 for IRAs), and subsequent investments of $100; its portfolio is concentrated with top 10 holdings comprising approximately 38% of net assets as of June 30, 2025, heavily weighted toward information technology (41.2%) and industrials (28.7%), including positions in ThredUp Inc., Super Micro Computer Inc., FARO Technologies Inc., Vertiv Holdings Co., and Oil-Dri Corp. of America. Needham Asset Management, founded in 1992 and headquartered at 445 Park Avenue, New York, New York, manages over $1 billion in public equity assets across small and mid-cap growth strategies, including the complementary Needham Growth Fund and Needham Small Cap Growth Fund; the firm serves long-term investors primarily in the United States through data-driven fundamental research focused on growth at a reasonable price and tax efficiency. In recent developments, the fund realized gains from the announced acquisition of a holding, Alteryx Inc., which agreed to go private for $4.4 billion in 4Q23, reflecting its strategy of capturing value in transitioning software companies; it also earned the 2024 LSEG Lipper Fund Award in the Small-Cap Growth category for superior risk-adjusted performance over five years ended November 30, 2023, alongside multiple prior Lipper awards for consistent outperformance.