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BERKSHIRE HATHAWAY INC

What you'd have made by mirroring BERKSHIRE HATHAWAY INC's public 13F filings, starting with $10,000 on Aug 15, 2013 and rebalancing at every disclosure through Jun 2, 2026.

52 filings replayed118 of 149 CUSIPs mapped to tickers129 closed trades29 still open
Benchmark
SPYIWMQQQEFAAGG
US Aggregate Bond — Investment-grade bonds

Equity curve

$10,000 mirrored · vs AGG
$10k$15k$20k$25k$30k$35k2015201720192021202320252026
Mirror portfolio$10k in AGG
Mirror — final
$33.37K
AGG — final
$13.08K
Mirror return
+233.7%
Excess return vs AGG
+202.9%

Risk profile

Weekly mirror returns vs AGG · rf ≈ 4%
Sharpe
0.32
Max drawdown
-35.8%
Beta vs AGG
0.59
Information ratio
0.43
CAGR
+9.9%
Volatility (ann.)
18.1%
Sortino
0.30
α (Jensen, ann.)
+7.0%
Tracking error
18.0%
Upside capture
57%
Downside capture
-29%
Window
12.8y

Drawdown

Underwater curve — distance below running peak
-30%-20%-10%0%-35.8%2015201720192021202320252026

Largest drawdown: -35.8% from 2020-02-13 to 2020-03-19 · recovered 2020-12-24.

Style decomposition

R² 54% · 668 weekly obs

Multivariate regression of weekly mirror excess return on five style factors built from the benchmark ETFs: SPY (market), IWM−SPY (size), QQQ−SPY (growth), EFA−SPY (international), AGG−SPY (bonds). The intercept is the “true alpha” after stripping these passive tilts. ✓ marks loadings whose |t-stat| ≥ 2 (≈ 95% confidence the loading is non-zero).

Market (β)
+0.81✓
Size tilt
+0.05
Growth tilt
-0.31✓
International tilt
+0.12✓
Bond tilt
-0.10
α (style-adjusted)
-0.0%
R²
54%
α t-stat
-0.01
Observations
668

Rolling 1y alpha

Trailing 52w mirror return − AGG return
-50%0%+50%avg +7.9%now +19.7%201520162017201820192020202120222023202420252026

Whether the headline alpha was earned recently or decades ago. Bands above the zero line are quarters where the mirror beat AGG on a trailing-year basis; bands below are quarters where it lost ground. A flat positive line = steady outperformance; a curve that crosses often = regime-dependent strategy.

Realized P&L · closed trades

Cumulative profit from positions opened and later sold
$0$1.0k$2.0k$3.0kPG +$703WFC +$565C +$265V +$230201520162017201820192020202120222023202420252026
Realized P&L
+$3.2K
Closed trades
129
Win rate
40%
Avg return / closed
+27.7%

Biggest closed trades

IssuerEntryExitHeldReturnP&L
PROCTER & GAMBLE CO
PG
Q3 2013Q4 202342Q+154%+$6.26B
WELLS FARGO & CO NEW
WFC
Q3 2013Q2 202236Q+26%+$5.03B
CITIGROUP INC
C
Q2 2022Q2 202512Q+80%+$2.36B
VISA INC
V
Q3 2013Q2 202652Q+720%+$2.05B
WAL MART STORES INC
WMT
Q3 2013Q4 201821Q+55%+$2.03B
JPMORGAN CHASE & CO
JPM
Q4 2018Q1 20219Q+45%+$1.81B
MASTERCARD INC
MA
Q3 2013Q2 202652Q+763%+$1.77B
AMAZON COM INC
AMZN
Q2 2019Q2 202628Q+182%+$1.57B
COSTCO WHSL CORP NEW
COST
Q3 2013Q4 202029Q+294%+$1.41B
ABBVIE INC
ABBV
Q4 2020Q2 20226Q+69%+$1.28B

Every trade · entry date × return

Bubble = position size at entry
-50%-25%0%+25%+50%+100%+200%+500%AAPL · +1373%MA · +763%V · +720%2015201720192021202320252026
PositiveNegativeStill open (marked to market)
Best closed pick
MA +763%
Worst closed pick
AAL -68%
Total trades
158
Open trades
29