Niles Investment Management, LLC: 13F Stock Holdings & Portfolio (Q2 2026)

Niles Investment Management, LLC's disclosed holdings carry a Herfindahl concentration index of 0.119 — mathematically equivalent to about 8 equally-sized positions, well below its 19 actual disclosed holdings. That gap points to a strategy built around a small core of high-conviction bets rather than broad diversification.

Position sizes are fairly uniform across the portfolio (a coefficient of variation of 1.15), suggesting a disciplined, rules-based approach to how much capital goes into each idea.

Recent activity leans toward initiating meaningfully larger new positions than it adds to existing ones (a 5.2 percentage-point tilt) — a pattern consistent with a more contrarian, new-idea-driven approach.

Sector classification currently covers about 61% of this portfolio's disclosed value; the remainder includes holdings (e.g. unmapped tickers, options, or other security types) not yet covered by our sector mapping.