Stock Trading Canary

United States · SEC Form 4 · Snapshot date: 2026-10-18 · Built: 2026-10-18 · 中文

← United States · Coverage record

US · SEC FORM 4

Horizon Kinetics Holding Corp

HKHC · OTC · CIK 0000088000 · Financial Services · Asset Management

INSIDER SIGNAL

74.6 / 100

5 buyers · 12 purchase transaction lines · $127.5K gross purchase

WHY THIS SIGNAL?

Buyer breadthStrong
Purchase sizeLow
RoleModerate
RecencyModerate
ConvictionStrong
Score anatomy

Each bar shows the contribution to the current score; the weights and formula stay unchanged.

Cluster+35.0 / 35
Purchase size+8.5 / 25
Role+15.0 / 20
Recency+6.1 / 10
Conviction+10.0 / 10

What is holding the score back?

  • ⚠ Purchase size is modest relative to the model scale
  • ✓ Cluster breadth is broad · 4+ insiders
  • ✓ Role scores high · most senior buyer: Chief Financial Officer

Purchase-size comments are relative to the model scale. Average daily volume is a separate market-context diagnostic.

US-v1.2 ranks qualifying equity purchases under the current 180-day rules. The score is a research priority, not a return forecast or probability. Backtests have not shown that a higher US score is followed by better returns.

Insider activity timeline

Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.

AprMayJunJulAugSepOct
Brennan Alice CDirector
●●●●●
Herndon MarkChief Financial Officer
●●●
Rosenthal Brent DDirector
●●
Nagelberg AllisonDirector
●
Maran Capital Management, LLC; Maran Partners Fund, LP; Maran Partners GP, LLC; Roller Daniel JDirector,Other; Other
●
● Purchase▼ Sale○ Other

—

Purchase breadth & concentration

QUALIFYING BUYERS5
PURCHASE CONCENTRATION58%Largest buyer: Rosenthal Brent D · $73.5K
CLUSTER BUYING · 15D4 insidersPeak activity: 2026-08-19–2026-09-02

Roles in the peak window: Chief Financial Officer, Director, Director,Other; Other. Concentration uses priced qualifying P lines only and does not change the saved score.

SIGNAL HISTORY

74.6 / 100

Latest recorded score

↓ -0.1 ptsversus the previous recorded snapshot
  1. 75.1
  2. 75.0
  3. 74.9
  4. 74.7
  5. 74.6

Only scores saved when a full US scoring run completed are shown; gaps are not reconstructed.

Recent Form 4 activity

73Purchases
0Sales
2Other Form 4 lines
36SEC filings · 365 days
BUYING12 qualifying P line(s) · 180 days
SELLING0 sale line(s) · context only
OTHER0 exercise / withholding / award / gift / other lines
10b5-1 / PLANNEDNot detected in parsed evidence

P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.

Market context

Market context provides additional background on recent price performance and risk. It does not affect the Insider Signal.

Price performance

1M
-22.7%
3M
-28.4%
6M
-30.5%
12M
-43.8%

Volatility & liquidity

Volatility
75.5%
Beta
—
Avg daily value
USD 75,163

Valuation

Market cap
USD 381.8M
P/E
74.6×

Fundamentals

Profit margin
7.0%
ROE
1.5%
Industry
Asset Management

Market data

Price data up to: 2026-10-11 · Price source: OpenBB/yfinance; volume from price cache (yfinance) · From SEC filings: Market cap, P/E, Profit margin, ROE · Fiscal year ended: 2025-12-31 · Market cap is the shares outstanding stated on the filing cover multiplied by the latest close. Share count date: 2026-08-11 · Status: PASS

Short interest

Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.

Shares short
223
Previous report
1,749
Avg daily volume
2,796
Days to cover
≤ 1.0

FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.

Historical equity purchases

Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.

Transaction dateReporting ownerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-18Nagelberg AllisonPurchase (P)Common Stock190USD 26.27USD 4,991SEC filing ↗
2026-09-02Brennan Alice CPurchase (P)Common Stock200USD 25.92USD 5,184SEC filing ↗
2026-08-28Brennan Alice CPurchase (P)Common Stock200USD 26.20USD 5,240SEC filing ↗
2026-08-27Brennan Alice CPurchase (P)Common Stock200USD 26.00USD 5,200SEC filing ↗
2026-08-26Maran Capital Management, LLC; Maran Partners Fund, LP; Maran Partners GP, LLC; Roller Daniel JPurchase (P)Common Stock500USD 26.50USD 13,250SEC filing ↗
2026-08-25Brennan Alice CPurchase (P)Common Stock200USD 26.75USD 5,350SEC filing ↗
2026-08-24Rosenthal Brent DPurchase (P)Common Stock2,000USD 27.00USD 54,000SEC filing ↗
2026-08-24Brennan Alice CPurchase (P)Common Stock200USD 26.87USD 5,374SEC filing ↗
2026-08-20Herndon MarkPurchase (P)Common Stock200USD 26.75USD 5,350SEC filing ↗
2026-08-19Herndon MarkPurchase (P)Common Stock50USD 26.50USD 1,325SEC filing ↗
2026-05-20Rosenthal Brent DPurchase (P)Common Stock700USD 27.85USD 19,495SEC filing ↗
2026-05-20Herndon MarkPurchase (P)Common Stock100USD 27.85USD 2,785SEC filing ↗
2026-03-20Horizon Common Inc; STAHL MURRAYPurchase (P)Common Stock53USD 34.60USD 1,834SEC filing ↗
2026-03-20Horizon Common Inc; STAHL MURRAYPurchase (P)Common Stock53USD 34.60USD 1,834SEC filing ↗
2026-03-20Nagelberg AllisonPurchase (P)Common Stock150USD 33.96USD 5,094SEC filing ↗

Form 4 evidence

75 transaction lines in the latest 365-day window; 270 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-18Nagelberg AllisonPurchase (P)Common Stock190USD 26.27USD 4,991SEC filing ↗
2026-09-02Brennan Alice CPurchase (P)Common Stock200USD 25.92USD 5,184SEC filing ↗
2026-08-28Brennan Alice CPurchase (P)Common Stock200USD 26.20USD 5,240SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-18Nagelberg AllisonPurchase (P)Common Stock190USD 26.27USD 4,991SEC filing ↗
2026-09-02Brennan Alice CPurchase (P)Common Stock200USD 25.92USD 5,184SEC filing ↗
2026-08-28Brennan Alice CPurchase (P)Common Stock200USD 26.20USD 5,240SEC filing ↗
2026-08-27Brennan Alice CPurchase (P)Common Stock200USD 26.00USD 5,200SEC filing ↗
2026-08-26Maran Capital Management, LLC; Maran Partners Fund, LP; Maran Partners GP, LLC; Roller Daniel JPurchase (P)Common Stock500USD 26.50USD 13,250SEC filing ↗
2026-08-25Brennan Alice CPurchase (P)Common Stock200USD 26.75USD 5,350SEC filing ↗
2026-08-24Rosenthal Brent DPurchase (P)Common Stock2,000USD 27.00USD 54,000SEC filing ↗
2026-08-24Brennan Alice CPurchase (P)Common Stock200USD 26.87USD 5,374SEC filing ↗
2026-08-20Herndon MarkPurchase (P)Common Stock200USD 26.75USD 5,350SEC filing ↗
2026-08-19Herndon MarkPurchase (P)Common Stock50USD 26.50USD 1,325SEC filing ↗
2026-05-20Rosenthal Brent DPurchase (P)Common Stock700USD 27.85USD 19,495SEC filing ↗
2026-05-20Herndon MarkPurchase (P)Common Stock100USD 27.85USD 2,785SEC filing ↗
2026-03-20Horizon Common Inc; STAHL MURRAYPurchase (P)Common Stock53USD 34.60USD 1,834SEC filing ↗
2026-03-20Horizon Common Inc; STAHL MURRAYPurchase (P)Common Stock53USD 34.60USD 1,834SEC filing ↗
2026-03-20Nagelberg AllisonPurchase (P)Common Stock150USD 33.96USD 5,094SEC filing ↗
2026-03-19Horizon Common Inc; STAHL MURRAYPurchase (P)Common Stock89USD 34.06USD 3,031SEC filing ↗
2026-03-18Rosenthal Brent DPurchase (P)Common Stock750USD 33.05USD 24,787SEC filing ↗
2026-03-18Horizon Common Inc; STAHL MURRAYPurchase (P)Common Stock27USD 34.00USD 918SEC filing ↗
2026-03-18Herndon MarkPurchase (P)Common Stock80USD 33.03USD 2,642SEC filing ↗
2025-12-23Maran Capital Management, LLC; Maran Partners Fund, LP; Maran Partners GP, LLC; Maran SPV GP, LLC; Maran SPV, LP; Roller Daniel JJ (J)Common Stock67,360USD 0.00USD 0SEC filing ↗
2025-12-10Horizon Common Inc; STAHL MURRAYPurchase (P)Common Stock22USD 27.00USD 594SEC filing ↗
2025-12-09Horizon Common Inc; STAHL MURRAYPurchase (P)Common Stock22USD 27.00USD 594SEC filing ↗
2025-12-08Horizon Common Inc; STAHL MURRAYPurchase (P)Common Stock22USD 26.73USD 588SEC filing ↗
2025-12-05Horizon Common Inc; STAHL MURRAYPurchase (P)Common Stock22USD 27.75USD 610SEC filing ↗
2025-12-04Horizon Common Inc; STAHL MURRAYPurchase (P)Common Stock22USD 27.75USD 610SEC filing ↗
2025-12-04Horizon Common IncPurchase (P)Common Stock6USD 41.25USD 248SEC filing ↗
2025-12-03Horizon Common Inc; STAHL MURRAYPurchase (P)Common Stock22USD 27.00USD 594SEC filing ↗
2025-12-02Horizon Common Inc; STAHL MURRAYPurchase (P)Common Stock22USD 27.23USD 599SEC filing ↗
2025-12-01Horizon Common Inc; STAHL MURRAYPurchase (P)Common Stock22USD 27.00USD 594SEC filing ↗
2025-11-28Horizon Common Inc; STAHL MURRAYPurchase (P)Common Stock22USD 27.23USD 599SEC filing ↗

Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.

Snapshot & identity

Snapshot date2026-10-18
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerHKHC
CIK0000088000
SectorFinancial Services
IndustryAsset Management Yahoo Finance
SEC SIC6282 Investment Advice
ExchangeOTC

Data coverage

Local Form 4 history270 transaction lines from 2020-08-28 to 2026-09-18
237 P purchase lines · 5 S sale lines · 28 other lines
SEC company submissionsOpen SEC filings ↗

Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.