Mason Hawkins - Longleaf Partners Portfolio Performance Analysis (Q2 2026)
Investment performance metrics based on historical 13F filings data.
Data Coverage: June 2013 to June 2026 • Initial Portfolio Value: $0.01B
Performance calculated from first filing in our database. This may not represent the investor's entire career.
Portfolio Growth (Since First Filing)
+1.85B
+9,999%+
Winning Positions
+50.38%
66 wins / 131 positions
Average Gain (Winners)
$28.45M
+9,999%+ avg per position
Active Positions
44
54 losing positions
Portfolio Value Over Time
Total Positions Tracked
131
All holdings over time
Win/Loss Ratio
1.22
66 gains / 54 losses
Active vs. Exited
44 / 87
Current positions / Exited
Position Performance
Performance calculated from first appearance in 13F filings. Initial values represent position value when first tracked, not actual purchase prices.
| Symbol | Company | Sector | Entry | Status | Initial Value | Current Value | Gain/Loss | Return % |
|---|---|---|---|---|---|---|---|---|
| RYN | Rayonier Inc. REIT | Real Estate | Dec 2013 | ACTIVE | $3.90K | $201.98M | $201.97M | +9,999%+ |
| MAT | Mattel, Inc. | Consumer Cyclical | Sep 2017 | ACTIVE | $171.71K | $171.04M | $170.87M | +9,999%+ |
| CNX | CNX Resources Corporation | Energy | Dec 2017 | ACTIVE | $729.50K | $158.22M | $157.49M | +9,999%+ |
| IAC | IAC Inc. | Communication Services | Sep 2021 | ACTIVE | $217.51K | $144.57M | $144.35M | +9,999%+ |
| PCH | PotlatchDeltic Corporation - Co | Real Estate | Dec 2018 | EXITED | $146.47K | $125.82M | $125.68M | +9,999%+ |
| LUMN | Lumen Technologies, Inc. | Communication Services | Mar 2021 | EXITED | $829.22K | $85.04M | $84.21M | +9,999%+ |
| ABT | Abbott Laboratories | Healthcare | Jun 2013 | ACTIVE | $502.91K | $76.29M | $75.79M | +9,999%+ |
| ACI | Albertsons Companies, Inc. | Consumer Defensive | Sep 2024 | ACTIVE | $51.24M | $116.85M | $65.61M | +128.04% |
| FDX | FedEx Corporation | Industrials | Jun 2013 | ACTIVE | $1.60M | $61.01M | $59.41M | +3709.66% |
| WMG | Warner Music Group Corp. | Communication Services | Sep 2022 | EXITED | $78.18K | $57.15M | $57.07M | +9,999%+ |
Important Note: Data Limitations
These metrics are based on 13F filing data which has significant limitations:
- Quarterly Snapshots Only: 13F filings show positions at quarter-end, not actual transaction prices
- No Transaction Prices: We cannot determine actual buy/sell prices, only end-of-quarter values
- Performance Estimates: Gains/losses are calculated from first appearance to last update using quarterly values
- Missing Data: Intra-quarter trades, dividends, corporate actions, and exact timing are not captured
- Educational Only: These metrics are estimates for understanding general investment patterns, not actual realized returns
Use these metrics for informational and educational purposes only. They represent broad trends, not precise investment performance.