HORIZON KINETICS ASSET MANAGEMENT LLC
10% Owner · RENN Fund, Inc.
Every open-market stock purchase HORIZON KINETICS ASSET MANAGEMENT LLC has reported to the SEC on Form 4 that met our signal bar, parsed straight from the filings. Insiders sell for many reasons, but they buy with their own money for one — this page tracks where those buys landed inside insider clusters and how the prices paid compare to where the stock trades now.
Total bought
$1.7M
Open-market buys
108
Companies
3
Last buy
Sep 17, 2026
Where the buys stand today
- MIAX+12.1% vs price paidMIAMI INTERNATIONAL HOLDINGS, INC.
2 purchases totalling $1.6M at an average of $37.36 per share; the stock last traded at $41.86. See all insider buying in MIAX →
Avg price paid$37.36Latest price$41.86Market cap$4.0B - RCGRENN Fund, Inc.
53 purchases totalling $119.4K at an average of $2.98 per share. See all insider buying in RCG →
Avg price paid$2.98Latest price—Market capUnknown - TPLTexas Pacific Land Corp
53 purchases totalling $20.3K at an average of $382.42 per share. See all insider buying in TPL →
Avg price paid$382.42Latest price—Market capUnknown
Cluster participation
Buys that landed within days of other insiders buying the same stock — the pattern this site exists to catch.
- TPLJul 6 – Sep 17, 20262 insiders$22.1K
- RCGJul 6 – Sep 17, 20262 insiders$134.1K
- TPLJul 6 – Sep 16, 20262 insiders$21.8K
- RCGJul 6 – Sep 16, 20262 insiders$131.8K
- RCGJul 6 – Sep 15, 20262 insiders$129.5K
- RCGJul 6 – Sep 14, 20262 insiders$127.2K
- RCGJul 6 – Sep 11, 20262 insiders$124.9K
- RCGJul 6 – Sep 10, 20262 insiders$122.6K
- RCGJul 6 – Sep 9, 20262 insiders$120.4K
- RCGJul 6 – Sep 4, 20262 insiders$115.9K
- RCGJul 6 – Sep 3, 20262 insiders$113.7K
- RCGJul 6 – Sep 2, 20262 insiders$111.5K
- RCGJul 6 – Sep 1, 20262 insiders$109.3K
- RCGJul 6 – Aug 31, 20262 insiders$107.0K
- RCGJul 6 – Aug 28, 20262 insiders$104.8K
- RCGJul 6 – Aug 27, 20262 insiders$102.6K
- RCGJul 6 – Aug 27, 20262 insiders$99.6K
- RCGJul 6 – Aug 26, 20262 insiders$97.4K
- RCGJul 6 – Aug 26, 20262 insiders$94.5K
- RCGJul 6 – Aug 25, 20262 insiders$89.3K
- RCGJul 6 – Aug 25, 20262 insiders$92.2K
- RCGJul 6 – Aug 24, 20262 insiders$87.1K
- RCGJul 6 – Aug 24, 20262 insiders$84.8K
- RCGJul 6 – Aug 21, 20262 insiders$79.7K
- RCGJul 6 – Aug 21, 20262 insiders$81.9K
- RCGJul 6 – Aug 21, 20262 insiders$77.5K
- MIAXMar 4 – Mar 5, 20262 insiders$622.5K
- MIAXAug 13 – Aug 28, 20254 insiders$1.8M
All reported buys
| Date | Ticker | Shares | Price | Value | Filing |
|---|---|---|---|---|---|
| Sep 17, 2026 | RCGcluster | 756 | $3.04 | $2.3K | SEC ↗ |
| Sep 17, 2026 | TPLcluster | 1 | $349.35 | $349.4 | SEC ↗ |
| Sep 16, 2026 | TPLcluster | 1 | $352.36 | $352.4 | SEC ↗ |
| Sep 16, 2026 | RCGcluster | 756 | $3.04 | $2.3K | SEC ↗ |
| Sep 15, 2026 | TPLcluster | 1 | $370.59 | $370.6 | SEC ↗ |
| Sep 15, 2026 | RCGcluster | 756 | $3.05 | $2.3K | SEC ↗ |
| Sep 14, 2026 | TPLcluster | 1 | $371.73 | $371.7 | SEC ↗ |
| Sep 14, 2026 | RCGcluster | 756 | $3.05 | $2.3K | SEC ↗ |
| Sep 11, 2026 | TPLcluster | 1 | $367.88 | $367.9 | SEC ↗ |
| Sep 11, 2026 | RCGcluster | 756 | $2.98 | $2.3K | SEC ↗ |
| Sep 10, 2026 | RCGcluster | 756 | $2.94 | $2.2K | SEC ↗ |
| Sep 10, 2026 | TPLcluster | 1 | $366.18 | $366.2 | SEC ↗ |
| Sep 9, 2026 | RCGcluster | 756 | $2.95 | $2.2K | SEC ↗ |
| Sep 9, 2026 | TPLcluster | 1 | $378.57 | $378.6 | SEC ↗ |
| Sep 8, 2026 | RCGcluster | 756 | $2.95 | $2.2K | SEC ↗ |
| Sep 8, 2026 | TPLcluster | 1 | $375.10 | $375.1 | SEC ↗ |
| Sep 4, 2026 | TPLcluster | 1 | $360.03 | $360.0 | SEC ↗ |
| Sep 4, 2026 | RCGcluster | 756 | $2.90 | $2.2K | SEC ↗ |
| Sep 3, 2026 | TPLcluster | 1 | $367.61 | $367.6 | SEC ↗ |
| Sep 3, 2026 | RCGcluster | 756 | $2.95 | $2.2K | SEC ↗ |
| Sep 2, 2026 | RCGcluster | 756 | $2.95 | $2.2K | SEC ↗ |
| Sep 2, 2026 | TPLcluster | 1 | $363.20 | $363.2 | SEC ↗ |
| Sep 1, 2026 | RCGcluster | 756 | $2.95 | $2.2K | SEC ↗ |
| Sep 1, 2026 | TPLcluster | 1 | $369.10 | $369.1 | SEC ↗ |
| Aug 31, 2026 | RCGcluster | 756 | $2.95 | $2.2K | SEC ↗ |
| Aug 31, 2026 | TPLcluster | 1 | $369.47 | $369.5 | SEC ↗ |
| Aug 28, 2026 | RCGcluster | 756 | $2.95 | $2.2K | SEC ↗ |
| Aug 28, 2026 | TPLcluster | 1 | $364.42 | $364.4 | SEC ↗ |
| Aug 27, 2026 | TPLcluster | 1 | $365.74 | $365.7 | SEC ↗ |
| Aug 27, 2026 | RCGcluster | 756 | $2.94 | $2.2K | SEC ↗ |
| Aug 26, 2026 | TPLcluster | 1 | $375.00 | $375.0 | SEC ↗ |
| Aug 26, 2026 | RCGcluster | 756 | $2.95 | $2.2K | SEC ↗ |
| Aug 25, 2026 | TPLcluster | 1 | $372.58 | $372.6 | SEC ↗ |
| Aug 25, 2026 | RCGcluster | 756 | $2.95 | $2.2K | SEC ↗ |
| Aug 24, 2026 | TPLcluster | 1 | $377.39 | $377.4 | SEC ↗ |
| Aug 24, 2026 | RCGcluster | 756 | $2.95 | $2.2K | SEC ↗ |
| Aug 21, 2026 | TPLcluster | 1 | $381.51 | $381.5 | SEC ↗ |
| Aug 21, 2026 | RCGcluster | 756 | $2.87 | $2.2K | SEC ↗ |
| Aug 20, 2026 | RCGcluster | 756 | $2.95 | $2.2K | SEC ↗ |
| Aug 20, 2026 | TPLcluster | 1 | $377.85 | $377.9 | SEC ↗ |
| Aug 19, 2026 | RCGcluster | 756 | $2.88 | $2.2K | SEC ↗ |
| Aug 19, 2026 | TPLcluster | 1 | $372.10 | $372.1 | SEC ↗ |
| Aug 18, 2026 | TPLcluster | 1 | $361.16 | $361.2 | SEC ↗ |
| Aug 18, 2026 | RCGcluster | 756 | $2.80 | $2.1K | SEC ↗ |
| Aug 17, 2026 | TPLcluster | 1 | $357.32 | $357.3 | SEC ↗ |
| Aug 17, 2026 | RCGcluster | 756 | $2.82 | $2.1K | SEC ↗ |
| Aug 14, 2026 | TPLcluster | 1 | $357.56 | $357.6 | SEC ↗ |
| Aug 14, 2026 | RCGcluster | 756 | $2.80 | $2.1K | SEC ↗ |
| Aug 13, 2026 | TPLcluster | 1 | $343.02 | $343.0 | SEC ↗ |
| Aug 13, 2026 | RCGcluster | 756 | $2.90 | $2.2K | SEC ↗ |
| Aug 12, 2026 | RCGcluster | 756 | $2.90 | $2.2K | SEC ↗ |
| Aug 12, 2026 | TPLcluster | 1 | $353.15 | $353.2 | SEC ↗ |
| Aug 11, 2026 | TPLcluster | 1 | $352.62 | $352.6 | SEC ↗ |
| Aug 11, 2026 | RCGcluster | 756 | $2.99 | $2.3K | SEC ↗ |
| Aug 10, 2026 | RCGcluster | 756 | $2.96 | $2.2K | SEC ↗ |
| Aug 10, 2026 | TPLcluster | 1 | $345.10 | $345.1 | SEC ↗ |
| Aug 7, 2026 | TPLcluster | 1 | $353.28 | $353.3 | SEC ↗ |
| Aug 7, 2026 | RCGcluster | 756 | $3.00 | $2.3K | SEC ↗ |
| Aug 6, 2026 | RCGcluster | 756 | $2.97 | $2.2K | SEC ↗ |
| Aug 6, 2026 | TPLcluster | 1 | $355.62 | $355.6 | SEC ↗ |
| Aug 5, 2026 | TPLcluster | 1 | $385.95 | $386.0 | SEC ↗ |
| Aug 5, 2026 | RCGcluster | 756 | $2.97 | $2.2K | SEC ↗ |
| Aug 4, 2026 | TPLcluster | 1 | $403.53 | $403.5 | SEC ↗ |
| Aug 4, 2026 | RCGcluster | 756 | $3.06 | $2.3K | SEC ↗ |
| Aug 3, 2026 | TPLcluster | 1 | $392.66 | $392.7 | SEC ↗ |
| Aug 3, 2026 | RCGcluster | 756 | $3.02 | $2.3K | SEC ↗ |
| Jul 31, 2026 | TPLcluster | 1 | $400.09 | $400.1 | SEC ↗ |
| Jul 31, 2026 | RCGcluster | 756 | $3.03 | $2.3K | SEC ↗ |
| Jul 30, 2026 | RCGcluster | 756 | $3.06 | $2.3K | SEC ↗ |
| Jul 30, 2026 | TPLcluster | 1 | $389.14 | $389.1 | SEC ↗ |
| Jul 29, 2026 | RCGcluster | 756 | $3.04 | $2.3K | SEC ↗ |
| Jul 29, 2026 | TPLcluster | 1 | $394.14 | $394.1 | SEC ↗ |
| Jul 28, 2026 | RCGcluster | 756 | $3.05 | $2.3K | SEC ↗ |
| Jul 28, 2026 | TPLcluster | 1 | $393.09 | $393.1 | SEC ↗ |
| Jul 27, 2026 | TPLcluster | 1 | $409.31 | $409.3 | SEC ↗ |
| Jul 27, 2026 | RCGcluster | 756 | $3.03 | $2.3K | SEC ↗ |
| Jul 24, 2026 | RCGcluster | 756 | $3.02 | $2.3K | SEC ↗ |
| Jul 24, 2026 | TPLcluster | 1 | $423.94 | $423.9 | SEC ↗ |
| Jul 23, 2026 | RCGcluster | 756 | $3.06 | $2.3K | SEC ↗ |
| Jul 23, 2026 | TPLcluster | 1 | $429.51 | $429.5 | SEC ↗ |
| Jul 22, 2026 | TPLcluster | 1 | $427.42 | $427.4 | SEC ↗ |
| Jul 22, 2026 | RCGcluster | 756 | $3.06 | $2.3K | SEC ↗ |
| Jul 21, 2026 | TPLcluster | 1 | $413.48 | $413.5 | SEC ↗ |
| Jul 21, 2026 | RCGcluster | 756 | $3.07 | $2.3K | SEC ↗ |
| Jul 20, 2026 | RCGcluster | 756 | $3.03 | $2.3K | SEC ↗ |
| Jul 20, 2026 | TPLcluster | 1 | $416.47 | $416.5 | SEC ↗ |
| Jul 17, 2026 | RCGcluster | 756 | $3.02 | $2.3K | SEC ↗ |
| Jul 17, 2026 | TPLcluster | 1 | $420.15 | $420.2 | SEC ↗ |
| Jul 16, 2026 | TPLcluster | 1 | $416.05 | $416.1 | SEC ↗ |
| Jul 16, 2026 | RCGcluster | 756 | $3.02 | $2.3K | SEC ↗ |
| Jul 15, 2026 | TPLcluster | 1 | $414.13 | $414.1 | SEC ↗ |
| Jul 15, 2026 | RCGcluster | 756 | $3.00 | $2.3K | SEC ↗ |
| Jul 14, 2026 | TPLcluster | 1 | $408.37 | $408.4 | SEC ↗ |
| Jul 14, 2026 | RCGcluster | 756 | $3.02 | $2.3K | SEC ↗ |
| Jul 13, 2026 | TPLcluster | 1 | $411.10 | $411.1 | SEC ↗ |
| Jul 13, 2026 | RCGcluster | 756 | $3.00 | $2.3K | SEC ↗ |
| Jul 10, 2026 | TPLcluster | 1 | $385.84 | $385.8 | SEC ↗ |
| Jul 10, 2026 | RCGcluster | 756 | $3.02 | $2.3K | SEC ↗ |
| Jul 9, 2026 | TPLcluster | 1 | $400.13 | $400.1 | SEC ↗ |
| Jul 9, 2026 | RCGcluster | 756 | $3.02 | $2.3K | SEC ↗ |
| Jul 8, 2026 | RCGcluster | 756 | $3.02 | $2.3K | SEC ↗ |
| Jul 8, 2026 | TPLcluster | 1 | $397.47 | $397.5 | SEC ↗ |
| Jul 7, 2026 | TPLcluster | 1 | $400.67 | $400.7 | SEC ↗ |
| Jul 7, 2026 | RCGcluster | 756 | $3.04 | $2.3K | SEC ↗ |
| Jul 6, 2026 | RCGcluster | 756 | $3.01 | $2.3K | SEC ↗ |
| Jul 6, 2026 | TPLcluster | 1 | $408.89 | $408.9 | SEC ↗ |
| Mar 4, 2026 | MIAXcluster | 7,200 | $43.38 | $312.3K | SEC ↗ |
| Aug 28, 2025 | MIAXcluster | 34,470 | $36.10 | $1.2M | SEC ↗ |
Get alerted the next time HORIZON KINETICS ASSET MANAGEMENT LLC — or any insider — buys
We watch every Form 4 as it hits SEC EDGAR and alert you when insiders cluster into the same stock.
About this data
Figures are parsed from HORIZON KINETICS ASSET MANAGEMENT LLC's Form 4 filings on SEC EDGAR (CIK 1056823) and cover open-market purchases (transaction code P) — grants, option exercises, and sales are excluded, which is why totals here can differ from raw filing counts. Every row links to its source document.
This page is informational and reflects public filing data. It is not investment advice.