StockDriftsStockDriftsTop 28 Mad River Investors Holdings
| Stock | Company | % Port. | Shares | Value | Activity | Ownership | Avg. Cost | Date |
|---|---|---|---|---|---|---|---|---|
| TPL | TEXAS PACIFIC LAND CORPORATI | 46.69% | 285.3K | $124.9M | +0.07%(+210) | $22.66(+1455.63%) | 2026-06-30 | |
| PBT | PERMIAN BASIN RTY TR | 9.41% | 1.01M | $25.2M | +0.20%(+2.01K) | $12.21(+171.35%) | 2026-06-30 | |
| LB | LANDBRIDGE COMPANY LLC | 7.94% | 268.0K | $21.2M | +0.59%(+1.57K) | $34.32(+143.08%) | 2026-06-30 | |
| HE | HAWAIIAN ELEC INDS INC MTN B | 6.69% | 1.32M | $17.9M | +0.36%(+4.80K) | $10.44(+13.15%) | 2026-06-30 | |
| GBTC | GRAYSCALE BITCOIN TRUST ETF | 6.13% | 360.1K | $16.4M | +0.00%(+0) | $45.25(+9.72%) | 2026-06-30 | |
| MIAX | MIAMI INTL HLDGS INC | 4.02% | 289.0K | $10.7M | +255.69%(+207.75K) | $38.19(+12.19%) | 2026-06-30 | |
| WBI | WATERBRIDGE INFRASTRUCTURE L | 3.43% | 267.8K | $9.2M | -1.14%(-3.10K) | $25.08(+29.73%) | 2026-06-30 | |
| MSB | MESABI TR | 3.06% | 323.7K | $8.2M | +0.68%(+2.19K) | $22.93(+3.11%) | 2026-06-30 | |
| WPM | WHEATON PRECIOUS METALS CORP | 2.36% | 56.2K | $6.3M | -37.08%(-33.10K) | $22.80(+490.78%) | 2026-06-30 | |
| FNV | FRANCO NEV CORP | 1.75% | 22.5K | $4.7M | -4.60%(-1.08K) | $87.13(+178.91%) | 2026-06-30 |
| Performance Metric | 3-Year Annualized | 3-Year Cumulative | 5-Year Annualized | 5-Year Cumulative |
|---|---|---|---|---|
| Top 20 Holdings Weighted | +26.76% | +103.66% | +13.88% | +91.50% |
| Top 20 Holdings Unweighted | +15.79% | +55.24% | +10.65% | +65.84% |
Mad River Investors reports $268.11M in US-listed equity holdings across 29 positions in its most recent 13F filing. Its largest disclosed positions are TPL (46.7%), PBT (9.4%) and LB (7.9%). The top 20 holdings account for 97.77% of reported assets. Its disclosed equity book has returned +103.66% on a three-year cumulative basis. Figures reflect the Q2 2026 filing.
Portfolio changes
Every reported change this quarter, grouped by direction. The signal is in the rotation, not any single trade.
Sign up free to track Mad River Investors, compare funds side by side, and get alerts the moment positions change.
Holdings on this page are parsed from Mad River Investors’s Form 13F filings with the U.S. Securities and Exchange Commission (CIK 1384484). View Mad River Investors’s 13F filings on SEC