Guy Spier - Aquamarine Capital Portfolio Performance Analysis (Q2 2022)
Investment performance metrics based on historical 13F filings data.
Data Coverage: December 2014 to June 2022 • Initial Portfolio Value: $0.00B
Performance calculated from first filing in our database. This may not represent the investor's entire career.
Portfolio Growth (Since First Filing)
+0.00B
+85.28%
Winning Positions
+64.71%
11 wins / 17 positions
Average Gain (Winners)
$6.74K
+99.43% avg per position
Active Positions
12
5 losing positions
Portfolio Value Over Time
Total Positions Tracked
17
All holdings over time
Win/Loss Ratio
2.20
11 gains / 5 losses
Active vs. Exited
12 / 5
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 % |
|---|---|---|---|---|---|---|---|---|
| BRK-B | Berkshire Hathaway Inc. New | Financial Services | Dec 2014 | ACTIVE | $21.11K | $38.39K | $17.28K | +81.83% |
| MA | Mastercard Incorporated | Financial Services | Dec 2014 | ACTIVE | $5.67K | $20.74K | $15.08K | +266.16% |
| BAC | Bank of America Corporation | Financial Services | Dec 2014 | ACTIVE | $10.55K | $23.90K | $13.35K | +126.46% |
| RACE | Ferrari | N/A | Mar 2016 | ACTIVE | $8.31K | $14.69K | $6.39K | +76.89% |
| MU | Micron Technology, Inc. | Technology | Sep 2019 | ACTIVE | $5.14K | $11.06K | $5.91K | +115.01% |
| BRK-A | Berkshire Hathaway Inc. | Financial Services | Dec 2014 | ACTIVE | $6.78K | $12.27K | $5.49K | +80.96% |
| MCO | Moody's Corporation | Financial Services | Mar 2016 | ACTIVE | $2.41K | $7.34K | $4.93K | +204.18% |
| AXP | American Express Company | Financial Services | Dec 2014 | ACTIVE | $25.35K | $29.11K | $3.76K | +14.85% |
| C | Citigroup, Inc. | Financial Services | Dec 2014 | EXITED | $5.74K | $7.09K | $1.36K | +23.68% |
| GOOGL | Alphabet Inc. | Communication Services | Jun 2020 | ACTIVE | $1.13K | $1.74K | $609.00 | +53.70% |
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.