Thomas Russo - Gardner Russo & Quinn Investment Strategy (Jun 30, 2025)


As of Jun 30, 2025, the Gardner Russo & Quinn portfolio managed by Thomas Russo demonstrates a sophisticated investment approach with 70 positions and an average holding period of 1458 quarters. The strategy focuses on Basic Materials, Communication Services, Consumer Cyclical, Consumer Defensive, Energy, Financial Services, Healthcare, Industrials, Real Estate, Technology sectors with a typical position size of 3.1% of the portfolio.


The portfolio's risk management approach includes a maximum position size of 3.13% and sector diversification of 10%, exemplified by the case study of Berkshire Hathaway Inc Cl A (BRK-A). This strategic framework provides insights into Thomas Russo's investment philosophy, risk management practices, and long-term value creation approach.

Investment Strategy Metrics

Key metrics revealing investment style, risk management, and performance characteristics

MetricValueCategoryDescription
Holding Period4.0 yearsStyleAverage duration positions are maintained
Position Count70StyleNumber of active positions in portfolio
Position Size3.1%RiskTypical allocation per position
Win Rate46.8%PerformancePercentage of profitable positions
Average Return916.5%PerformanceMean return across positions
Sharpe Ratio0.11PerformanceReturn per unit of risk taken

Investment Case Study: Berkshire Hathaway Inc Cl A (BRK-A)

6/30/2013 - 11/9/2025

Performance Metrics

Total Return: 110,573.91%

Holding Period: 4515 days

Max Position Size: $1,413,463,100.00

Position Weight: 10.93%

Key Events

6/30/2013: ENTRY(4,891.00 shares) @ $168.60
9/30/2013: INCREASE(62.00 shares) @ $170.41
12/31/2013: INCREASE(125.00 shares) @ $177.90
3/31/2014: INCREASE(31.00 shares) @ $187.35
6/30/2014: DECREASE(-37.00 shares) @ $189.91
9/30/2014: INCREASE(10.00 shares) @ $206.90
12/31/2014: DECREASE(-22.00 shares) @ $226.00
3/31/2015: INCREASE(4.00 shares) @ $217.50
6/30/2015: INCREASE(38.00 shares) @ $204.85
9/30/2015: DECREASE(-67.00 shares) @ $195.24
12/31/2015: INCREASE(20.00 shares) @ $197.80
3/31/2016: DECREASE(-42.00 shares) @ $213.45
6/30/2016: DECREASE(-14.00 shares) @ $216.97
9/30/2016: DECREASE(-15.00 shares) @ $216.22
12/31/2016: DECREASE(-72.00 shares) @ $244.12
3/31/2017: DECREASE(-30.00 shares) @ $249.85
6/30/2017: DECREASE(-48.00 shares) @ $254.70
9/30/2017: DECREASE(-19.00 shares) @ $274.74
12/31/2017: DECREASE(-135.00 shares) @ $297.60
3/31/2018: DECREASE(-14.00 shares) @ $299.10
6/30/2018: DECREASE(-45.00 shares) @ $282.04
9/30/2018: DECREASE(-66.00 shares) @ $320.00
12/31/2018: DECREASE(-138.00 shares) @ $306.00
3/31/2019: DECREASE(-319.00 shares) @ $301.21
6/30/2019: DECREASE(-96.00 shares) @ $318.35
9/30/2019: DECREASE(-76.00 shares) @ $311.83
12/31/2019: DECREASE(-76.00 shares) @ $339.59
3/31/2020: DECREASE(-73.00 shares) @ $272.00
6/30/2020: DECREASE(-164.00 shares) @ $267.30
9/30/2020: DECREASE(-50.00 shares) @ $320.00
12/31/2020: DECREASE(-144.00 shares) @ $347.81
3/31/2021: DECREASE(-164.00 shares) @ $385.70
6/30/2021: DECREASE(-110.00 shares) @ $418.60
9/30/2021: DECREASE(-101.00 shares) @ $411.38
12/31/2021: DECREASE(-68.00 shares) @ $450.66
3/31/2022: DECREASE(-177.00 shares) @ $528.92
6/30/2022: DECREASE(-47.00 shares) @ $408.95
9/30/2022: DECREASE(-42.00 shares) @ $406.47
12/31/2022: DECREASE(-110.00 shares) @ $468,710.96
3/31/2023: DECREASE(-21.00 shares) @ $465,600.00
6/30/2023: DECREASE(-49.00 shares) @ $517,810.00
9/30/2023: DECREASE(-48.00 shares) @ $531,477.00
12/31/2023: DECREASE(-65.00 shares) @ $542,625.03
3/31/2024: DECREASE(-285.00 shares) @ $634,440.00
6/30/2024: DECREASE(-18.00 shares) @ $612,241.00
9/30/2024: DECREASE(-69.00 shares) @ $691,180.00
12/31/2024: DECREASE(-176.00 shares) @ $680,920.00
3/31/2025: DECREASE(-212.00 shares) @ $798,441.60
6/30/2025: DECREASE(-33.00 shares) @ $728,800.00

Investment Thesis

Entry Context: Initial position established based on fundamental analysis

Sector Conditions: Favorable market conditions in the sector

Risk Factors:
  • Market volatility
  • Sector-specific risks

Key Learnings

  • Position sizing is critical for portfolio management
  • Important to monitor sector exposure

Sector Allocations