Insurance Cash Flow and Diversified Industrial Holdings

Short-term divergence: 1M–6M absolute returns were slightly negative (-2.52% to -2.09%) but BRK-B outperformed XLF by +1.62%–+7.91%, indicating relative resilience in the latest quarter. Intermediate weakness: 1Y performance was weakest (‑7.58% abs, ‑7.56% vs XLF), and the 2Y and 3Y periods showed positive absolute gains (17.05% and 59.41%) while lagging the sector modestly (s.a ‑3.05% and ‑0.76%). Standout: the 5Y horizon is the clearest outperformance — +92.67% absolute with +35.46% vs the sector, making the 5-year window the strongest contributor to long-term relative alpha.

BRK-B's annualized volatility of 19.25% exceeds the S&P 500's 17.82% by 1.43 percentage points (≈8.0% higher). The downside deviation of 14.3% is lower than total volatility by 4.95 percentage points (≈25.7% of total vol), suggesting that negative-tail dispersion is smaller than overall volatility would imply. The largest historical stress episode in the sample is a max drawdown of -29.57% from peak on 2020-01-17 to trough on 2020-03-23 (≈66 calendar days), with recovery to the prior peak on 2020-11-16 (≈238 days from trough; total peak→recovery ≈304 days). Current short- and medium-term volatility (60d = 17.48%, 252d = 18.48%) are both below the long-term average (19.25%), indicating recent calm relative to the longer-term sample. For investors, this profile implies modestly higher day-to-day variability than the S&P 500, but a downside behavior (14.3% downside deviation and a one-time max drawdown near -30%) that is contained in duration (full recovery in ~10 months) and not excessively fatter-tailed relative to its total volatility.

Trailing beta 0.816 = market-like (near defensive). Upside beta 0.869 vs downside beta 0.837 shows a modest upside bias: BRK-B captures ~86.9% of S&P upside and ~83.7% of S&P downside, a 3.2 percentage-point asymmetry that slightly favors upside. Market R² = 0.57 (correlation 0.755) implies 57.0% systematic risk and 43.0% idiosyncratic risk—meaning nearly half of return variance is stock-specific and can be diversified away in a broad market portfolio. Sector analysis: sector beta 0.75 with sector R² = 0.726 and sector correlation 0.852 indicates BRK-B’s returns are more closely explained by Financials in variance terms (72.6% explained) but BRK-B is less sensitive per unit sector move than per unit market move. In decomposition terms BRK-B takes slightly more risk from general market moves (beta 0.816) than from sector-specific shocks (beta 0.75), while still carrying substantial company-specific risk that active allocation or security selection can address.

Sharpe 0.462 means Berkshire generated modest excess return per unit of total volatility above the 3.64% risk-free rate. Sortino 0.623 > Sharpe (about 35% higher) indicates downside volatility is lower than total volatility, suggesting returns have been skewed toward positive or small negative moves rather than frequent moderate downside noise. Calmar 0.424 is low: using the Treynor-implied annualized return as a reference (see below) implies a large realized max drawdown relative to annual return. Information Ratio 0.029 is well below the 0.5 threshold for consistent active alpha, so performance has not demonstrated persistent benchmark-beating returns after adjusting for tracking error. Treynor 10.914 implies strong excess return per unit market beta; if beta ≈ 1.0 then Rp ≈ 3.64% + 10.914% = 14.55% annualized, and with Calmar = Return / MaxDrawdown, that implies an implied max drawdown ≈ 34.3%. Caveat: the implied annual return and inferred drawdown scale with the actual market beta (Rp = 3.64% + 10.914% * beta).

BRK-B posts reliable positive returns in bull environments and stronger participation when bull regimes are volatile: 1.52% average per month in Bull-LowVol (60 months) and 2.18% per month in Bull-HighVol (36 months). That 2.18% monthly in Bull-HighVol implies materially higher annualized upside (~29.5% vs ~19.8%). In declines the stock shows defensive behavior: average monthly return in Bear-HighVol is -0.63% (32 months), substantially milder than the -2.29% average in Bear-LowVol (5 months). The small sample for Bear-LowVol (5 months) reduces confidence in that specific estimate. The capture metrics quantify this defensiveness: upside capture of 86.8% and downside capture of 72.0% (capture ratio 1.21) mean BRK-B captures 86.8% of market gains and only 72.0% of market losses — it participates less than the market in both directions but skews favorably toward retaining more of the upside per unit of downside (capture ratio >1). In the current regime (Bear-HighVol), expect modest negative performance (historical average -0.63% monthly, ~-7.3% annualized) and meaningfully less downside than the S&P 500 given the 72.0% downside capture.

• Defensive beta profile: Trailing beta 0.816 versus S&P 500 (1.0), sector beta 0.75 — lower systematic exposure than the market and sector.
• Favorable capture asymmetry: Upside capture 86.8% vs downside capture 72.0% (capture ratio = 1.21) — participates less in rallies but also limits downside, useful for downside risk control.
• Reasonable downside-adjusted performance: Sortino ratio 0.623 indicates better performance after adjusting for downside volatility, despite a lower Sharpe (0.462).
• Moderate absolute volatility: Annualized volatility 19.25% — below many cyclical financials and large-cap stocks in stress periods, offering a tempered risk profile for equity exposure.

Lower-beta Financials stock with modest risk-adjusted returns (Sharpe 0.462, Sortino 0.623), meaningful negative alpha versus the S&P (-26.96% 1Y) and a sizable max drawdown (-29.57%).

Strength: Downside control and lower systematic exposure (downside capture 72.0%, beta 0.816).

Concern: Material benchmark underperformance: 1Y alpha vs S&P -26.96% and 1Y return -7.58%.

1. BRK-B is a lower-beta, defensive Financials holding: beta 0.816 vs S&P and sector beta 0.75 provide reduced market sensitivity.
2. Performance asymmetry is favorable for downside protection: captures 72.0% of market declines while capturing 86.8% of gains (capture ratio = 1.21).
3. Investors should note significant benchmark underperformance over the last year: alpha vs S&P -26.96% and sector alpha -7.56%.
4. Risk-adjusted metrics are modest: Sharpe 0.462 (below 1.0 target) but Sortino 0.623 indicates relatively stronger downside-adjusted returns.
5. Maximum drawdown of -29.57% highlights potential for deep interim losses despite lower beta — position sizing and drawdown tolerance remain important.