Insider · SEC Form 4 filer
Mark Herndon
Companies
Where they file as an insider
Horizon Kinetics Holding (HKHC) CFO Latest filing Aug 20, 2026
Track record
Did their buys beat the typical stock?
Open-market buys6
Quarters checked 6 months later0
Beat the typical stock —
Quarters too new to check2
Too soon to tell. None of their buys has a finished 6-month check yet.
Horizon Kinetics Holding (HKHC) Bought Aug 19–20, 2026 · $6.67K · 250 shares Too new Too new. Its 6-month check uses prices as of Mar 31, 2027.
Horizon Kinetics Holding (HKHC) Bought May 20, 2026 · $2.79K · 100 shares Too new Too new. Its 6-month check uses prices as of Dec 31, 2026.
Horizon Kinetics Holding (HKHC) Bought Mar 18, 2026 · $2.64K · 80 shares Not counted Not counted. We have no fund price for this stock on both Mar 31, 2026 and Sep 30, 2026.
Horizon Kinetics Holding (HKHC) Bought Nov 20, 2025 · $2.9K · 100 shares Not counted Not counted. We have no fund price for this stock on both Dec 31, 2025 and Jun 30, 2026.
Horizon Kinetics Holding (HKHC) Bought Jun 4, 2025 · $804 · 20 shares Not counted Not counted. We have no fund price for this stock on both Jun 30, 2025 and Dec 31, 2025.
Each row is one stock in one quarter, however many buys it took. We take the stock's price at the end of that quarter and again 6 months later, and compare it with the typical stock over the same dates. Prices are quarter-end values from funds' 13F reports (the middle value across 3 or more funds), through Sep 30, 2026. Moves past 3 times up or down, mostly stock splits, are left out. How we tested this.
Past results. This is data, not advice.
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