Reporting owner · CIK 0001056823
Horizon Kinetics Asset Management Llc
Visual SEC Form 4 history across 3 companies, 203 transactions and 133 filings.
10%RENN Fund, Inc.
Open-market mix
99%buys
Open-market buy performance
90-day forward return on this insider's open-market purchases
For every open-market buy (Form 4 code P, acquisition A) in the selected window, we take the closing price on the transaction date and 90 calendar days later, then compute the percentage change. The figures shown are the simple average and median of those per-buy returns.
- Window follows the rest of the summary (all-history or last 3 months).
- Only buys with a resolved price context are counted.
- Includes both positive and negative outcomes; gains and losses net out at the per-buy level.
Monthly open-market activity
Reported purchase and sale transaction counts
Buys Sells
Net value flow
Buys minus sells
Feb 25
$85.8K
Mar 25
$40.9K
Dec 25
$287.5
Jan 26
$7.1K
Feb 26
$5.6K
Mar 26
−$4M
May 26
$4.5K
Jun 26
$2.5K
Aug 26
$30.7K
Sep 26
$5.2K
Transaction texture
Ownership and ticket size
Average P/S size$32.6K
Median P/S size$1.3K
Direct135
Indirect68
Sep 02, 2026buy
Filing-only signals
Deterministic matches in this insider's history
Latest Form 4 facts
Quick context from source filings
Latest sale
sale at MIAMI INTERNATIONAL HOLDINGS, INC. on Mar 02, 2026 valued at $4,953,530.
Review SEC filingAssociated companies
Visual map of known reporting history
| Ticker | Insider | Role | Type | Shares | Value | Code | Signals | 90d return | Filed | Trans date |
|---|---|---|---|---|---|---|---|---|---|---|
| RCG | HORIZON KINETICS ASSET MANAGEMENT LLC | 10% | buy | 756 | $204k | P | +8.9% | 05/29 | 05/27 | |
| TPL | HORIZON KINETICS ASSET MANAGEMENT LLC | 10% | buy | 1 | $40.6k | P | −4.5% | 05/29 | 05/28 | |
| TPL | HORIZON KINETICS ASSET MANAGEMENT LLC | 10% | buy | 1 | $53.8k | P | −27.7% | 03/26 | 03/25 | |
| TPL | HORIZON KINETICS ASSET MANAGEMENT LLC | 10% | buy | 1 | $53.4k | P | −30.3% | 03/25 | 03/24 | |
| TPL | HORIZON KINETICS ASSET MANAGEMENT LLC | 10% | buy | 1 | $52.7k | P | −31.6% | 03/20 | 03/19 | |
| TPL | HORIZON KINETICS ASSET MANAGEMENT LLC | 10% | buy | 1 | $53.1k | P | −33.4% | 03/19 | 03/18 | |
| TPL | HORIZON KINETICS ASSET MANAGEMENT LLC | 10% | buy | 1 | $52.5k | P | −32.8% | 03/18 | 03/17 | |
| TPL | HORIZON KINETICS ASSET MANAGEMENT LLC | 10% | buy | 1 | $52.4k | P | −31.4% | 03/17 | 03/16 | |
| TPL | HORIZON KINETICS ASSET MANAGEMENT LLC | 10% | buy | 1 | $52.9k | P | −28.1% | 03/16 | 03/13 | |
| TPL | HORIZON KINETICS ASSET MANAGEMENT LLC | 10% | buy | 1 | $53.2k | P | −30.4% | 03/13 | 03/12 |
Horizon Kinetics Asset Management Llc Insider Activity FAQ
SEC Form 4 context
Who is Horizon Kinetics Asset Management Llc?
Horizon Kinetics Asset Management Llc is a reporting owner in SEC Form 4 filings with reporting owner CIK 0001056823.
Which companies has Horizon Kinetics Asset Management Llc reported transactions for?
RENN Fund, Inc., Texas Pacific Land Corp, MIAMI INTERNATIONAL HOLDINGS, INC.
When was Horizon Kinetics Asset Management Llc's latest insider buy?
buy at RENN Fund, Inc. on Sep 02, 2026 valued at $2,230.
When was Horizon Kinetics Asset Management Llc's latest insider sale?
sale at MIAMI INTERNATIONAL HOLDINGS, INC. on Mar 02, 2026 valued at $4,953,530.
Where can I see the original SEC filings?
Each transaction row links directly to the source SEC filing so the reported Form 4 details can be reviewed.
Are performance metrics included?
This version does not calculate win rates, forward returns, benchmark-adjusted returns, or high-conviction scores.