MAD RIVER INVESTORS Long-Term Concentrated

Location: Boston, MA

CIK: 0001384484 · Show all filings

Period: Q3 2026 (← Previous)

Filing Date: Oct 27, 2026

Total Value: $246M (99.8% shares, 0.2% debt)

Holdings (31)

New Positions (2)

Increased Positions (8)

Exited Positions (1)

Unchanged Positions (16)

TPL TEXAS PACIFIC LAND CORPORATI 37.8%
Value $92.79M Shares 284,771 Share Price $325.83 Est. Cost/Share $253.85 Unrealized @ Report Date +28.4%
HE HAWAIIAN ELEC INDS INC MTN B 4.8%
Value $11.79M Shares 1,319,050 Share Price $8.94 Est. Cost/Share $10.29 Unrealized @ Report Date -13.1%
WBI WATERBRIDGE INFRASTRUCTURE L 3.1%
Value $7.557M Shares 268,751 Share Price $28.12 Est. Cost/Share $23.46 Unrealized @ Report Date +19.9%
BTC GRAYSCALE BITCOIN MINI TR ET 1.2%
Value $3.012M Shares 81,517 Share Price $36.95 Est. Cost/Share $37.30 Unrealized @ Report Date -0.9%
LB LANDBRIDGE COMPANY LLC 8.8%
Value $21.65M Shares 266,705 Share Price $81.17 Est. Cost/Share $36.56 Unrealized @ Report Date +122.0%
PANW PALO ALTO NETWORKS INC 0.9%
Value $2.179M Shares 5,484 Share Price $397.31 Est. Cost/Share $191.42 Unrealized @ Report Date +107.6%
HE HAWAIIAN ELEC INDS INC MTN B 0.2%
Value $436K Shares 48,800 Share Price $8.94 Est. Cost/Share $10.29 Unrealized @ Report Date -13.1%
CBOE CBOE GLOBAL MKTS INC 0.7%
Value $1.839M Shares 6,680 Share Price $275.28 Est. Cost/Share $121.44 Unrealized @ Report Date +126.7%
CINF CINCINNATI FINL CORP 0.2%
Value $574K Shares 3,600 Share Price $159.37 Est. Cost/Share $150.23 Unrealized @ Report Date +6.1%
UNH UNITEDHEALTH GROUP INC 0.3%
Value $624K Shares 1,700 Share Price $367.08 Est. Cost/Share $298.94 Unrealized @ Report Date +22.8%
ORCL ORACLE CORP 0.4%
Value $1.105M Shares 8,050 Share Price $137.30 Est. Cost/Share $254.17 Unrealized @ Report Date -46.0%
CSCO CISCO SYS INC 0.3%
Value $646K Shares 6,000 Share Price $107.63 Est. Cost/Share $67.38 Unrealized @ Report Date +59.7%
AMZN AMAZON COM INC 0.3%
Value $847K Shares 3,400 Share Price $249.15 Est. Cost/Share $226.42 Unrealized @ Report Date +10.0%
RLI RLI CORP 0.1%
Value $332K Shares 6,000 Share Price $55.31 Est. Cost/Share $42.27 Unrealized @ Report Date +30.9%
JNJ JOHNSON & JOHNSON 0.1%
Value $318K Shares 1,200 Share Price $264.74 Est. Cost/Share $169.51 Unrealized @ Report Date +56.2%
ETN EATON CORP PLC 0.2%
Value $516K Shares 1,200 Share Price $429.71 Est. Cost/Share $363.27 Unrealized @ Report Date +18.3%