Reporting owner · CIK 0001056823

Horizon Kinetics Asset Management LLC

SEC Form 4 history across 2 companies, 66 transactions and 64 filings.

10%Texas Pacific Land Corp
Open-market transaction mix100% buys66 buys · 0 sales
Latest filingOct 01, 2026, 07:34 PM

Available history · May 27, 2026 – Sep 29, 2026

Filings64Form 4 records
Buying$86.4K66 purchases
Selling$00 sales
Net value$86.4KBuys minus sells · disclosed values

Latest insider transactions

Form 4 filings from available history.
Horizon Kinetics Asset Management LLC transactions · 20 per page
CompanyInsiderActivityDisclosed valueFiled (ET)
RCGRENN Fund, Inc.
Horizon Kinetics Asset Management LLC10%P · buySEC filing ↗$2.07kView disclosure →
TPLTexas Pacific Land Corp
Horizon Kinetics Asset Management LLC10%P · buySEC filing ↗$407View disclosure →
RCGRENN Fund, Inc.
Horizon Kinetics Asset Management LLC10%P · buySEC filing ↗$2.06kView disclosure →
RCGRENN Fund, Inc.
Horizon Kinetics Asset Management LLC10%P · buySEC filing ↗$2.04kView disclosure →
TPLTexas Pacific Land Corp
Horizon Kinetics Asset Management LLC10%P · buySEC filing ↗$406View disclosure →
Open a transaction for shares, transaction date, ownership and the original SEC filing.

Latest Form 4 facts

Quick context from source filings

Latest open-market transaction

buy at Texas Pacific Land Corp on Sep 29, 2026 valued at $1,364.

Review SEC filing
Latest buy

buy at Texas Pacific Land Corp on Sep 29, 2026 valued at $1,364.

Review SEC filing
Latest sale

No open-market insider sale is available.

Monthly open-market activity

Last 4 reported months · purchases and sales

View exact monthly values
MonthPurchasesSalesBuy valueSale valueNet value
May 202630$4,511.34$0.00$4,511.34
Jun 202620$2,485.73$0.00$2,485.73
Aug 2026240$30,748.46$0.00$30,748.46
Sep 2026370$48,635.00$0.00$48,635.00

Net value is disclosed purchases minus sales, not profit. A dash means the value is unavailable.

Ownership and transaction size

Ownership and ticket size

Average P/S size$1.3K
Median P/S size$1.7K
Direct66
Indirect0
Sep 29, 2026buy

Filing-only signals

Deterministic matches in this insider's history

Direct Ownershipfiling-context45Large Buysize110% Owner Buyrole45

Associated companies

Companies in the disclosed reporting history

Texas Pacific Land CorpTPL · 192 transactions · latest Oct 01, 2026, 07:34 PMRENN Fund, Inc.RCG · 33 transactions · latest Sep 29, 2026, 05:23 PMMIAMI INTERNATIONAL HOLDINGS, INC.MIAX · 12 transactions · latest Mar 06, 2026, 12:00 AM

Open-market buy performance

90-day forward return on this insider's open-market purchases

90d forward
Forward return is not available yet

No purchases currently have the price observations needed for a 90-day return. This may reflect incomplete price coverage or purchases that have not reached the return window.

Disclosed ownership

How reported shareholdings evolved

Non-derivative shares held after reported transactions—not stock prices or a complete portfolio.

32 observations · May 28, 2026 – Sep 29, 2026. Window ends at the latest available report, not today.

Selected observation · Sep 29, 20263,364,203 shares reported
Inspect transaction
View exact observations and source transactions
Transaction dateShares held afterFiledSource
May 28, 20263,395,623May 29, 2026View transaction
Jun 4, 20263,393,546Jun 5, 2026View transaction
Aug 14, 20263,244,010Aug 17, 2026View transaction
Aug 18, 20263,244,012Aug 19, 2026View transaction
Aug 19, 20263,244,013Aug 20, 2026View transaction
Aug 20, 20263,244,014Aug 21, 2026View transaction
Aug 21, 20263,244,015Aug 24, 2026View transaction
Aug 24, 20263,244,016Aug 25, 2026View transaction
Aug 25, 20263,244,017Aug 26, 2026View transaction
Aug 26, 20263,244,018Aug 27, 2026View transaction
Aug 27, 20263,244,019Aug 28, 2026View transaction
Aug 28, 20263,244,020Aug 31, 2026View transaction
Aug 31, 20263,244,021Sep 1, 2026View transaction
Sep 1, 20263,242,743Sep 2, 2026View transaction
Sep 2, 20263,242,744Sep 3, 2026View transaction
Sep 3, 20263,390,840Sep 4, 2026View transaction
Sep 4, 20263,390,841Sep 8, 2026View transaction
Sep 8, 20263,390,842Sep 9, 2026View transaction
Sep 9, 20263,390,843Sep 10, 2026View transaction
Sep 10, 20263,390,844Sep 11, 2026View transaction
Sep 11, 20263,390,845Sep 14, 2026View transaction
Sep 15, 20263,390,847Sep 16, 2026View transaction
Sep 16, 20263,390,848Sep 17, 2026View transaction
Sep 17, 20263,390,849Sep 18, 2026View transaction
Sep 18, 20263,390,850Sep 21, 2026View transaction
Sep 21, 20263,390,851Sep 22, 2026View transaction
Sep 22, 20263,390,852Sep 23, 2026View transaction
Sep 23, 20263,390,853Sep 24, 2026View transaction
Sep 24, 20263,390,854Sep 25, 2026View transaction
Sep 25, 20263,390,855Sep 29, 2026View transaction
Sep 28, 20263,390,856Sep 29, 2026View transaction
Sep 29, 20263,364,203Oct 1, 2026View transaction

Securities and direct/indirect ownership contexts are kept separate and never summed. Joint filings may associate the same disclosed row with multiple owners. Unknown values are omitted, not treated as zero. Lines connect observations for readability; they do not establish holdings between filings, cost basis, or current ownership. Amendments and stock splits require reviewing the source.

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?

Texas Pacific Land Corp, RENN Fund, Inc., MIAMI INTERNATIONAL HOLDINGS, INC.

When was Horizon Kinetics Asset Management LLC's latest insider buy?

buy at Texas Pacific Land Corp on Sep 29, 2026 valued at $1,364.

When was Horizon Kinetics Asset Management LLC's latest insider sale?

No open-market insider sale is available for this period.

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?

The profile shows average and median 90-day stock returns after open-market purchases when price coverage is available. These are unadjusted stock returns, not realized trading gains. Win rates, benchmark-adjusted returns and conviction scores are not calculated.