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Mad River Investors Portfolio holdings
AUM
$268M
1-Year Est. Return
31.54%
This Fund
S&P 500
This Quarter
Est. Return
-1.69%
1 Year Est. Return
+31.54%
3 Year Est. Return
+225.37%
5 Year Est. Return
+261.39%
10 Year Est. Return
+1,619.55%
AUM
$268M
AUM Growth
-$9.76M
(-3.5%)
Cap. Flow
+$1.22M
Cap. Flow
% of AUM
0.45%
Top 10 Holdings %
Top 10 Hldgs %
91.25%
Holding
33
New
1
Increased
10
Reduced
9
Closed
3
Avg Time Held Equity + Options
14.4
quarters
Top 10 Avg Time Held Equity + Options
16.8
quarters
Top 20 Avg Time Held Equity + Options
15.1
quarters
Avg Time Held Equity only
14.8
quarters
Top 10 Avg Time Held Equity only
16.8
quarters
Top 20 Avg Time Held Equity only
15.1
quarters
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Miami International Holdings
MIAX
|
+$9.29M |
| 2 |
LandBridge Co
LB
|
+$108K |
| 3 |
Fermi Inc
FRMI
|
+$104K |
| 4 |
Texas Pacific Land
TPL
|
+$85.1K |
| 5 |
Hawaiian Electric Industries
HE
|
+$68.4K |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Wheaton Precious Metals
WPM
|
+$4.31M |
| 2 |
Carnival Corporation Ltd
CCL
|
+$1.66M |
| 3 |
Vanguard Morningstar Total Stock Market ETF
VTI
|
+$715K |
| 4 |
Royal Gold
RGLD
|
+$627K |
| 5 |
JPMorgan Chase
JPM
|
+$417K |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Energy | 67.31% |
| 2 | Miscellaneous | 9.43% |
| 3 | Materials | 7.16% |
| 4 | Utilities | 6.67% |
| 5 | Financials | 5.47% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | Held Since | |
|---|---|---|---|---|---|---|---|
26
RLI Corp
RLI
$5.24B
| $354K | 0.13% |
6,000
| – | – |
2016 Q3
39 quarters
|
|
27
Berkshire Hathaway Class B
BRK.B
$1.11T
| $313K | 0.12% |
625
-200
| -24% | -$96.2K |
2015 Q4
42 quarters
|
|
28
Johnson & Johnson
JNJ
$599B
| $305K | 0.11% |
1,200
| – | – |
2025 Q3
3 quarters
|
|
29
CACI
CACI
$13.5B
| $211K | 0.08% |
455
-350
| -43% | -$179K |
2018 Q2
32 quarters
|
|
|
30
Fermi Inc
FRMI
$2.39B
| $151K | 0.06% |
+16,500
| New | +$104K |
2026 Q2
0 quarters
|
|
|
31
JPMorgan Chase
JPM
$881B
| – | – |
-1,417
| Closed | -$417K | – |
|
|
32
Royal Gold
RGLD
$19.8B
| – | – |
-2,463
| Closed | -$627K | – |
|
33
Vanguard Dividend Appreciation ETF
VIG
$112B
| – | – |
-1,000
| Closed | -$215K | – |
|
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Mad River Investors's Q2 2026 Portfolio in Review
As of Q2 2026, Mad River Investors held 33 positions worth $268M, down 3.5% from $278M the previous quarter. Its ten largest holdings account for 91% of the portfolio.
Mad River Investors's Q2 2026 filing shows 1 new, 10 increased, 9 reduced and 3 closed positions. Its largest new stake was Fermi Inc: 16,500 shares worth $151K. The largest sale was Wheaton Precious Metals, an estimated $4.31M.
By sector, the portfolio is most concentrated in Energy at 67% of assets, up from 66% a quarter earlier, followed by Miscellaneous and Materials.
- Mad River Investors's largest Q2 2026 buy was Fermi Inc: 16,500 shares worth $151K.
- Mad River Investors added most to Miami International Holdings in Q2 2026, an estimated $9.29M increase.
- Mad River Investors's biggest Q2 2026 reduction was Wheaton Precious Metals, cutting an estimated $4.31M.
- Mad River Investors fully exited Royal Gold in Q2 2026, selling an estimated $627K.
- Mad River Investors's ten largest holdings make up 91% of its $268M portfolio in Q2 2026.
- Mad River Investors opened 1 new position and closed 3 in Q2 2026.
- Mad River Investors's portfolio value fell 3.5% quarter-over-quarter to $268M.
Based on Mad River Investors's 13F filing for Q2 2026, filed 3 Aug 2026.