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Finaxion Research · Wyckoff: buying the accumulation · single stocks · Recomputed 2026-09-10

Does Wyckoff: buying the accumulation work on BRK-B?

Wyckoff: buying the accumulation does not beat buy-and-hold on BRK-B: -6.9 points a year over 30 years.

Total return
206.5%
Buy and hold
×22
CAGR
3.8%
Sharpe
0.04
Max drawdown
-52.4%
Trades
139
Out of sample
overfit
Years
30
1×10×22×1997200020032006200920122015201820212024
StrategyBRK-B

Findings

  1. Wyckoff: buying the accumulation does not beat buy-and-hold on BRK-B: -6.9 points a year over 30 years.
  2. Against the S&P 500 over the same window: -6.6 points a year.
  3. Total return +206.5% versus ×22 for buy-and-hold, with 139 trades.
  4. The result does not hold out of sample: it is overfit.
  5. Maximum drawdown -52.4%.
  6. It beats in neither half of the history (split at 2011).
  7. It ranks #124 of 227 markets for this strategy by annual excess over the S&P 500.

Findings derived from the full panel. Each carries its number and its denominator; the computations are reproducible with artifact 11e887f77aa5.

Exactly what was tested

Mechanical approximation: 20-bar range with an 8-bar test window; active accumulation state → long; state lost → flat.

How to read it

The verdict compares the strategy with buying and holding BRK-B over the same window, with round-trip costs per asset class. “Out of sample” is walk-forward: the rule is fit on one stretch and judged on the next. A result that beats in the full sample but not out of it is overfit. Full methodology in the protocol. How we test.

Open this backtest with its trades   Trades (CSV)

Every strategy on BRK-B → · Full page for Wyckoff: buying the accumulation →

How to cite

Finaxion Research (2026). Does Wyckoff: buying the accumulation work on BRK-B?. Daily backtest 1962-01-01–2026-08-31, artifact 11e887f77aa5. https://finaxion.app/en/research/wyckoff-accumulation/brk-b

Not a recommendation. Past performance does not guarantee future results.