Stocks/Funds/CIK 1384484

MAD RIVER INVESTORS

long-term holder
Quarterly 13F filings · Latest period 2026-03-31 · CIK 1384484
Assets
$277M
+17.4% YoY
Holdings
31
Lifetime alpha vs market
+14.33% annual
Average hold time
3.5 yr
median 2.3 yr

Quarterly history

Cum return +160% vs S&P +52% · α +108% lifetimeAUM $277M · peak $277MFlow $-35M (-16%)2016-062017-122019-062020-122022-062023-122025-062026-03
AUM ($B)fundS&P 500(gap = α)/ Flow in/out

Behavior signals (lifetime)

Dip response
-4.70%
trims when stocks drop
when a holding falls −10%+
Middle response
-6.28%
baseline attrition
Rally response
-1.83%
trims into rallies
when a holding rises +10%+

Top positions · 30

Ticker$ value% portYoYHold time
TPLTexas Pacific Land Corpo$135M48.8%+8.1%5.3 yr
PBTPermian Basin Royalty Tr$22M7.8%4.3 yr
HEHawaiian Electric Indust$20M7.1%+35.5%1.5 yr
GBTCGrayscale Bitcoin Trust $19M6.9%2.3 yr
LBLandBridge Company LLC$18M6.6%-3.4%1.8 yr
WPMWheaton Precious Metals $12M4.2%+70.0%9.0 yr
MSBMesabi Trust$10M3.7%5.8 yr
WBIWaterBridge Infrastructu$7M2.6%0.8 yr
FNVFranco-Nevada Corporatio$6M2.1%+58.0%7.3 yr
FBTCFidelity Wise Origin Bit$4M1.5%2.3 yr
CCLCarnival Corporation & p$4M1.5%+33.1%3.3 yr
MIAXMiami International Hold$3M1.1%0.8 yr
VTIVanguard Total Stock Mar$3M1.0%3.0 yr
BTCGrayscale Bitcoin Mini T$2M0.9%1.5 yr
0HQN.LCboe Global Markets, Inc$2M0.7%+26.3%8.3 yr

Portfolio composition (YoY)

Industry mix
Oil & Gas Exploration & Production48.8%-4.6pp$135M
Asset Management - Cryptocurrency8.4%-4.2pp$23M
Oil & Gas Midstream7.8%+5.8pp$22M
Diversified Utilities7.1%+1.4pp$20M
Oil & Gas Equipment & Services6.6%-0.5pp$18M
Gold6.5%-0.4pp$18M
Steel3.7%+0.2pp$10M
Oil & Gas Energy2.6%$7M
Asset Management2.0%-1.3pp$5M
Leisure1.5%-0.1pp$4M
Country
US93.5%+2.2pp
CA6.3%-0.6pp
IE0.2%
Top 5: 77.1% · Top 10: 91.2% · Top 25: 99.2%

Winners

TickerPrev $PnLYoY %
WPM$11M+0.01B70.0%
HE$13M+0.00B35.5%
TPL$126M+0.00B8.1%
FNV$4M+0.00B58.0%
CCL$4M+0.00B33.1%

Losers

TickerPrev $PnLYoY %
LB$17M-0.00B-3.4%
RLI$1M-0.00B-26.0%
ICE$1M-0.00B-7.8%

Top buys this quarter · 9

BTC Grayscale Bitcoin Mini Trust E+$2M
MSB Mesabi Trust+$10M
PBT Permian Basin Royalty Trust+$0M
HE Hawaiian Electric Industries, +$0M
WBI WaterBridge Infrastructure LLC+$0M
MIAX Miami International Holdings, +$3M
LB LandBridge Company LLC+$0M
CCL Carnival Corporation & plc+$4M
JPM JPMorgan Chase & Co.+$0M

Top sells this quarter · 14

BRK-B Berkshire Hathaway Inc.$0M
FBTC Fidelity Wise Origin Bitcoin F$0M
GBTC Grayscale Bitcoin Trust ETF$0M
VIG Vanguard Dividend Appreciation$0M
VTI Vanguard Total Stock Market ET$0M
RSP Invesco S&P 500 Equal Weight Eexit$0M
WPM Wheaton Precious Metals Corp.$11M
TPL Texas Pacific Land Corporation$82M
C Citigroup Inc.exit$0M
KMB Kimberly-Clark Corporationexit$0M

Quarterly history (TTM returns)

PeriodAUM# PosReturn (1yr)SPY (1yr)Alpha (1yr)Flow
2026-03-31$277M31+26.62%+17.59%+9.03%-0.04B
2025-12-31$219M34+2.27%+17.72%-15.45%-0.01B
2025-09-30$233M37+22.67%+17.52%+5.16%+0.02B
2025-06-30$223M23+49.99%+14.94%+35.04%+0.00B
2025-03-31$236M24+83.82%+8.30%+75.52%-0.01B
2024-12-31$215M26+66.17%+24.89%+41.29%+0.01B
2024-09-30$180M26+50.79%+36.04%+14.75%+0.00B
2024-06-30$149M27+23.40%+24.49%-1.09%-0.02B
2024-03-31$144M27+9.51%+29.62%-20.11%+0.03B
2023-12-31$108M26+4.09%+26.18%-22.09%-0.04B
2023-09-30$141M25+18.83%+21.57%-2.73%+0.01B
2023-06-30$135M27+18.89%+19.42%-0.54%-0.01B
2023-03-31$142M23+2.00%-7.82%+9.82%-0.03B
2022-12-31$172M26+20.77%+7.56%+13.20%+0.01B
2022-09-30$137M26-2.14%-4.93%+2.78%+0.01B
2022-06-30$128M27-12.58%-16.11%+3.53%+0.01B