MAD RIVER INVESTORS

Fundamental concentrated ★Highest signal financials specialist (80%) CIK 1384484
League rank
#995
in Fundamental concentrated · #7418 overall
Long book
$277.2M
Q1 2026
Positions
31
Top-10 weight
91%
concentration
Last quarter
-6.7%
SPY +14.8%
Turnover
9%
of book per quarter

Strategy in plain words

auto-generated from filings

MAD RIVER INVESTORS is a concentrated fundamental stock-picker, specialised in financials (80% of the long book), running a $277.2M US long book across 31 positions.

The portfolio is extremely concentrated — the top 10 positions are almost the whole book. The book barely moves quarter to quarter — a patient, low-turnover holder. Current anchor positions: TEXAS PACIFIC LAND CORP, PERMIAN BASIN ROYALTY TRUST, HAWAIIAN ELECTRIC INDS, GRAYSCALE BITCOIN TRUST ETF, LANDBRIDGE CO LLC-A.

Over the last 9 quarters its long book ran on average 2.8pp per quarter ahead of the S&P 500, beating the index in 5 of 9 quarters. We rate its filings highest-signal: new buys here are worth attention.

Implied long-book return vs S&P 500

methodology: positions priced quarterly, no shorts/options
Fund long book S&P 500
Q1 2024
+8.5%
Q2 2024
+16.6%
Q3 2024
+21.4%
Q4 2024
+10.8%
Q1 2025
-5.3%
Q2 2025
-0.2%
Q3 2025
-6.8%
Q4 2025
+27.1%
Q1 2026
-6.7%

Sector allocation

Financials
75%
Utilities
9%
Materials
8%
Energy
3%
Industrials
2%
Technology
2%
Consumer discretionary
0%
Healthcare
0%

Long book by quarter

$144.1M
Q1 2024
$149.3M
Q2 2024
$180.3M
Q3 2024
$215.2M
Q4 2024
$236.0M
Q1 2025
$223.2M
Q2 2025
$233.4M
Q3 2025
$219.4M
Q4 2025
$277.2M
Q1 2026

What does MAD RIVER own?

Q1 2026 13F
CompanySectorSharesValue% of bookChange
TPL TEXAS PACIFIC LAND CORPFinancials285.1K$135.3M48.8%-0.3%
HE HAWAIIAN ELECTRIC INDSUtilities1.3M$19.5M7.1%+2.6%
LB LANDBRIDGE CO LLC-AFinancials266.4K$18.4M6.6%+1.3%
WPM WHEATON PRECIOUS METALS CORPMaterials89.3K$11.7M4.2%-8.5%
WBI WATERBRIDGE INFRASTRUC-CL AEnergy270.9K$7.3M2.6%+5.4%
FNV FRANCO-NEVADA CORPMaterials23.6K$5.8M2.1%0.0%
CCL CARNIVAL CORP LTDIndustrials156.2K$4.0M1.5%+0.4%
MIAX MIAMI INTERNATIONAL HOLDINGSFinancials81.3K$3.2M1.1%+8.3%
CBOE CBOE GLOBAL MARKETS INCFinancials6.7K$1.9M0.7%-0.1%
AAPL APPLE INCTechnology5.1K$1.3M0.5%Held
ICE INTERCONTINENTAL EXCHANGE INFinancials7.6K$1.2M0.4%Held
ORCL ORACLE CORPTechnology8.1K$1.2M0.4%Held
PANW PALO ALTO NETWORKS INCTechnology5.5K$879K0.3%Held
AMZN AMAZON.COM INCConsumer discretionary3.5K$729K0.3%Held
RGLD ROYAL GOLD INCFinancials2.5K$627K0.2%-7.3%
CINF CINCINNATI FINANCIAL CORPFinancials3.6K$566K0.2%Held
CSCO CISCO SYSTEMS INCTechnology6.0K$466K0.2%Held
UNH UNITEDHEALTH GROUP INCFinancials1.7K$460K0.2%Held
CACI CACI INTERNATIONAL INC -CL ATechnology805$438K0.2%Held
ETN EATON CORP PLCIndustrials1.2K$429K0.2%Held
JPM JPMORGAN CHASE & COFinancials1.4K$417K0.2%+1.2%
BRK/B BERKSHIRE HATHAWAY INC-CL BFinancials825$395K0.1%-26.7%
RLI RLI CORPFinancials6.0K$342K0.1%-20.0%
JNJ JOHNSON & JOHNSONHealthcare1.2K$293K0.1%Held

13F filing history

PeriodFormFiledEntriesReported valueFlagsSource
Q1 202613F-HRApr 23, 202632$277.9M canonicalSEC ↗
Q4 202513F-HRFeb 6, 202635$219.6M canonicalSEC ↗
Q3 202513F-HROct 14, 202538$233.8M canonicalSEC ↗
Q2 202513F-HRJul 8, 202524$223.3M canonicalSEC ↗
Q1 202513F-HRApr 22, 202524$236.0M canonicalSEC ↗
Q4 202413F-HRJan 16, 202526$215K canonicalSEC ↗
Q3 202413F-HROct 22, 202426$180.3M canonicalSEC ↗
Q2 202413F-HRAug 2, 202427$149.3M canonicalSEC ↗
Q1 202413F-HRApr 19, 202427$144.1M canonicalSEC ↗