MRM-Horizon Advisors LLC

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Assets, Funds, Holdings

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MRM-Horizon Advisors LLC
CRD #130585
SEC #801-62991
CIK #0001384484
AUM $338.3 M (2025-03-28)
Employees 4 (50% Investors, 0% Brokers)
Phone617-728-0333
Address84 State Street, Suite 1060
Boston, MA 02109
Source [IAPD] [EDGAR] [Website]
Total AUM ($M)
3502802101407002003201020182026
Sector Form 13F Holdings Value ($M)
Texas Pacific Land Corp 100.4
Grayscale Bitcoin Trust BTC 31.6
Landbridge Co LLC 15.9
Hawaiian Electric Industries Inc 13.0
Wheaton Precious Metals Corp 10.4
Mesabi Trust 7.1
Fidelity Wise Origin Bitcoin Fund 6.9
Carnival Corp 5.2
Franco Nevada Corp 3.9
Grayscale Bitcoin MINI Trust BTC 3.7
View All
Holdings by Sector ($M)
2502001501005002012201620212026
Type Form D Funds Date Sold ($M) AUM ($M)
HF Long Point Investors Series C 2025-03-26 1.4
HF Long Point Investors - Senvest Partners Series 2016-03-30 2.0
PE LPI Private Equity Series 2013-11-20 0.2
HF Long Point Investors - Abrams Bison LP Series 2012-03-30 5.6
HF Long Point Investors - Appaloosa Investment Limited Partnership I Series 2012-03-30 3.8
PE Long Point Investors Brazos Class 2012-03-30 0.1
HF Long Point Investors - Discontinuing Series 2012-03-30 0.8
HF Long Point Investors LP 2012-03-30 1.2
HF Long Point Investors - Mad River Managed Series 2012-03-30 64.0
HF Long Point Investors - Perry Partners LP Series 2012-03-30 0.5
View All
AUM Breakdown Accounts AUM ($M)
By Client Type
(a) Individuals (other than high net worth individuals) 20 16.3
(b) Individuals (high net worth individuals) 95 219.6
(c) Banking or thrift institutions 0 0.0
(d) Investment companies 0 0.0
(e) Business development companies 0 0.0
(f) Pooled investment vehicles 1 65.6
(g) Pension and profit sharing plans 5 19.0
(h) Charitable organizations 0 0.0
(i) State or municipal government entities 0 0.0
(j) Other investment advisers 0 0.0
(k) Insurance companies 0 0.0
(l) Sovereign wealth funds and foreign official institutions 0 0.0
(m) Corporations or other businesses not listed above 5 17.8
(n) Other 0 0.0
Total 187 338.3
By Discretionary
Discretionary 172 338.1
Non-Discretionary 15 0.2
Total 187 338.3
By Non-United States Persons
Non-United States Persons 1.1
United States Persons 337.3
Total 187 338.3
Form D Directors # Filings # Firms 2011 - 2025
TDF Management Ltd 4
Richard Silver 6
DBA Mad River Investors Mrmhorizon Advisors LLC 2
EDGAR Form CIK 2011 - 2025
13F-HR [0001384484]
SC 13G [0001384484]
Form 13D/13G Filer Form 13D/13G Subject Filed
Mad River Investors Atlas Energy Group LLC [2017-04-24]
Mad River Investors Atlas Energy Group LLC [2017-04-24]
Mad River Investors Atlas Energy Group LLC [2017-02-14]
Comparable Firms State AUM ($B)
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Appomattox Advisory Inc
NY 0.4
Pacific Strategic Management LP
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Wave Digital Assets LLC
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Ardent Capital Management Inc
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Hallador Investment Advisors Inc
NV 0.3
Islay Capital Management LLC
TX 0.3
VSR Capital Management LP
CA 0.3
Compass Financial Advisors LLC
IN 0.3
ELCO Management Company LLC
NY 0.3
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