COMBO-01 · SPY

Bollinger-Keltner Squeeze · Strategy evidence

Inspect the inputs, parameters and accounting behind a published result.

Run referencef9499e41f047

Last included price bar2026-11-10

Bundle generated (UTC)2026-11-11 10:55 UTC

Accounting modelSynthetic daily target allocations · v3

Replay the recorded returns and equity with the files below. Recreating strategy decisions needs the original matching inputs; fresh price downloads may differ. These are simulated allocations, not broker fills.

Downloads

Downloads load and verify compressed objects only when selected. Negative weights represent short exposure; no code is executed in your browser.

1. Download a complete bundle

Download the Python tool above and run this command. It checks shared objects and creates replay.zip; no repository clone is needed.

python e0543584b55263609cc8fd38cd032cb8432af6c2b48da3f53599e6e68c922f59.py https://quantarenas.com/data/evidence/runs/f9499e41f0475afdd5f4582461bb0dc42c2269dc5f27abbacf296d39570b2a05/manifest.json --bundle replay.zip

2. Replay the arithmetic

Extract replay.zip and run from its folder with Python. This verifies recorded weights, contributions and equity using only the standard library; it does not recalculate strategy decisions.

python scripts/replay_evidence.py data/evidence/runs/f9499e41f0475afdd5f4582461bb0dc42c2269dc5f27abbacf296d39570b2a05/manifest.json

3. Obtain and compare inputs

In the extracted bundle, use the recorded Python version and install the pinned dependencies. This command downloads provider inputs privately and reports inputHashMatches. Only a matching hash supports exact recomputation; revised provider data may not match. You may instead supply an original matching snapshot as private-input.json.

python -m pip install -r requirements-lock.txt
python scripts/recompute_evidence.py data/evidence/runs/f9499e41f0475afdd5f4582461bb0dc42c2269dc5f27abbacf296d39570b2a05/manifest.json --fetch-input private-input.json

4. Recompute the original strategy

With the exact original input snapshot and recorded dependencies, run the archived strategy and walk-forward selection. Original provider inputs are not public. Revised downloads fail the input-hash match and cannot establish exact reproduction.

python scripts/recompute_evidence.py data/evidence/runs/f9499e41f0475afdd5f4582461bb0dc42c2269dc5f27abbacf296d39570b2a05/manifest.json --input private-input.json

Accounting assumptions

Each day's return uses the preceding day's target allocation. The new target is decided at the current close. This is a synthetic close-based model, not a measured execution price.

Cash residual: 1 - sum(weights); residual may exceed one or be negative for shorts/leverage.
Decision: Target weights use bars through close t; previous targets earn (t-1,t].
Trading costs (bp): 0
Execution assumption: Synthetic daily target allocations, not broker orders or fills; financing/borrow costs omitted.
Synthetic rebalance turnover: Sum(abs(target[t] - target[t-1]*(1+assetReturn[t])/(1+grossReturn[t]))); one-way risky notional at close t after returns, divided by pre-trade equity.
Return interval: Sum of previous target weight times each asset close-to-close return; cash return is zero.
Target weight change: Sum(abs(target[t] - target[t-1])); changes in rule targets only.
Walk-forward transition: Candidate retains its own hypothetical state; first test return uses previous published target.

Parameters used

{
  "active": {
    "bb_period": 16,
    "bb_std": 2.0,
    "max_hold": 20,
    "momentum_period": 12,
    "squeeze_lookback": 50,
    "squeeze_percentile": 25
  },
  "defaults": {
    "bb_period": 20,
    "bb_std": 2.0,
    "max_hold": 20,
    "momentum_period": 12,
    "squeeze_lookback": 50,
    "squeeze_percentile": 25
  }
}

Walk-forward selections

Default/pre-walk-forward history is not out-of-sample evidence. Each fold records its training and test boundaries; the selected candidate retains its own hypothetical state.

1 · 2013-01-04T00:00:00 → 2013-07-03T00:00:00

{
  "config": {
    "bb_period": 20,
    "bb_std": 2.0,
    "max_hold": 20,
    "momentum_period": 12,
    "squeeze_lookback": 60,
    "squeeze_percentile": 25
  },
  "isSharpe": 0.44975644066138165,
  "run": 7,
  "testEnd": "2013-07-03T00:00:00",
  "testStart": "2013-01-04T00:00:00",
  "trainEnd": "2013-01-03T00:00:00",
  "trainStart": "2010-01-04T00:00:00"
}

2 · 2013-07-05T00:00:00 → 2014-01-03T00:00:00

{
  "config": {
    "bb_period": 20,
    "bb_std": 2.0,
    "max_hold": 20,
    "momentum_period": 12,
    "squeeze_lookback": 60,
    "squeeze_percentile": 25
  },
  "isSharpe": 0.45330106257570557,
  "run": 7,
  "testEnd": "2014-01-03T00:00:00",
  "testStart": "2013-07-05T00:00:00",
  "trainEnd": "2013-07-03T00:00:00",
  "trainStart": "2010-07-06T00:00:00"
}

3 · 2014-01-06T00:00:00 → 2014-07-03T00:00:00

{
  "config": {
    "bb_period": 20,
    "bb_std": 2.0,
    "max_hold": 20,
    "momentum_period": 12,
    "squeeze_lookback": 60,
    "squeeze_percentile": 25
  },
  "isSharpe": 0.32103662898184815,
  "run": 7,
  "testEnd": "2014-07-03T00:00:00",
  "testStart": "2014-01-06T00:00:00",
  "trainEnd": "2014-01-03T00:00:00",
  "trainStart": "2011-01-06T00:00:00"
}

4 · 2014-07-07T00:00:00 → 2015-01-07T00:00:00

{
  "config": {
    "bb_period": 20,
    "bb_std": 2.0,
    "max_hold": 20,
    "momentum_period": 12,
    "squeeze_lookback": 60,
    "squeeze_percentile": 25
  },
  "isSharpe": 0.7294197488693582,
  "run": 7,
  "testEnd": "2015-01-07T00:00:00",
  "testStart": "2014-07-07T00:00:00",
  "trainEnd": "2014-07-03T00:00:00",
  "trainStart": "2011-07-07T00:00:00"
}

5 · 2015-01-08T00:00:00 → 2015-07-08T00:00:00

{
  "config": {
    "bb_period": 16,
    "bb_std": 2.0,
    "max_hold": 20,
    "momentum_period": 12,
    "squeeze_lookback": 40,
    "squeeze_percentile": 25
  },
  "isSharpe": 0.999817829104796,
  "run": 0,
  "testEnd": "2015-07-08T00:00:00",
  "testStart": "2015-01-08T00:00:00",
  "trainEnd": "2015-01-07T00:00:00",
  "trainStart": "2012-01-09T00:00:00"
}

6 · 2015-07-09T00:00:00 → 2016-01-08T00:00:00

{
  "config": {
    "bb_period": 16,
    "bb_std": 2.0,
    "max_hold": 20,
    "momentum_period": 12,
    "squeeze_lookback": 40,
    "squeeze_percentile": 25
  },
  "isSharpe": 0.7107240523500759,
  "run": 0,
  "testEnd": "2016-01-08T00:00:00",
  "testStart": "2015-07-09T00:00:00",
  "trainEnd": "2015-07-08T00:00:00",
  "trainStart": "2012-07-09T00:00:00"
}

7 · 2016-01-11T00:00:00 → 2016-07-11T00:00:00

{
  "config": {
    "bb_period": 16,
    "bb_std": 2.0,
    "max_hold": 20,
    "momentum_period": 12,
    "squeeze_lookback": 40,
    "squeeze_percentile": 25
  },
  "isSharpe": 0.7592019764446463,
  "run": 0,
  "testEnd": "2016-07-11T00:00:00",
  "testStart": "2016-01-11T00:00:00",
  "trainEnd": "2016-01-08T00:00:00",
  "trainStart": "2013-01-11T00:00:00"
}

8 · 2016-07-12T00:00:00 → 2017-01-12T00:00:00

{
  "config": {
    "bb_period": 20,
    "bb_std": 2.0,
    "max_hold": 20,
    "momentum_period": 12,
    "squeeze_lookback": 50,
    "squeeze_percentile": 25
  },
  "isSharpe": 0.707668532896856,
  "run": 4,
  "testEnd": "2017-01-12T00:00:00",
  "testStart": "2016-07-12T00:00:00",
  "trainEnd": "2016-07-11T00:00:00",
  "trainStart": "2013-07-12T00:00:00"
}

9 · 2017-01-13T00:00:00 → 2017-07-13T00:00:00

{
  "config": {
    "bb_period": 24,
    "bb_std": 2.0,
    "max_hold": 20,
    "momentum_period": 12,
    "squeeze_lookback": 60,
    "squeeze_percentile": 25
  },
  "isSharpe": 0.4868403449412541,
  "run": 8,
  "testEnd": "2017-07-13T00:00:00",
  "testStart": "2017-01-13T00:00:00",
  "trainEnd": "2017-01-12T00:00:00",
  "trainStart": "2014-01-13T00:00:00"
}

10 · 2017-07-14T00:00:00 → 2018-01-12T00:00:00

{
  "config": {
    "bb_period": 20,
    "bb_std": 2.0,
    "max_hold": 20,
    "momentum_period": 12,
    "squeeze_lookback": 50,
    "squeeze_percentile": 25
  },
  "isSharpe": 0.6444010309723339,
  "run": 4,
  "testEnd": "2018-01-12T00:00:00",
  "testStart": "2017-07-14T00:00:00",
  "trainEnd": "2017-07-13T00:00:00",
  "trainStart": "2014-07-14T00:00:00"
}

11 · 2018-01-16T00:00:00 → 2018-07-16T00:00:00

{
  "config": {
    "bb_period": 20,
    "bb_std": 2.0,
    "max_hold": 20,
    "momentum_period": 12,
    "squeeze_lookback": 50,
    "squeeze_percentile": 25
  },
  "isSharpe": 0.7825911562998664,
  "run": 4,
  "testEnd": "2018-07-16T00:00:00",
  "testStart": "2018-01-16T00:00:00",
  "trainEnd": "2018-01-12T00:00:00",
  "trainStart": "2015-01-16T00:00:00"
}

12 · 2018-07-17T00:00:00 → 2019-01-17T00:00:00

{
  "config": {
    "bb_period": 20,
    "bb_std": 2.0,
    "max_hold": 20,
    "momentum_period": 12,
    "squeeze_lookback": 50,
    "squeeze_percentile": 25
  },
  "isSharpe": 0.6263860838896952,
  "run": 4,
  "testEnd": "2019-01-17T00:00:00",
  "testStart": "2018-07-17T00:00:00",
  "trainEnd": "2018-07-16T00:00:00",
  "trainStart": "2015-07-17T00:00:00"
}

13 · 2019-01-18T00:00:00 → 2019-07-18T00:00:00

{
  "config": {
    "bb_period": 20,
    "bb_std": 2.0,
    "max_hold": 20,
    "momentum_period": 12,
    "squeeze_lookback": 60,
    "squeeze_percentile": 25
  },
  "isSharpe": 0.7132902147594599,
  "run": 7,
  "testEnd": "2019-07-18T00:00:00",
  "testStart": "2019-01-18T00:00:00",
  "trainEnd": "2019-01-17T00:00:00",
  "trainStart": "2016-01-19T00:00:00"
}

14 · 2019-07-19T00:00:00 → 2020-01-17T00:00:00

{
  "config": {
    "bb_period": 24,
    "bb_std": 2.0,
    "max_hold": 20,
    "momentum_period": 12,
    "squeeze_lookback": 50,
    "squeeze_percentile": 25
  },
  "isSharpe": 0.6466248044032864,
  "run": 5,
  "testEnd": "2020-01-17T00:00:00",
  "testStart": "2019-07-19T00:00:00",
  "trainEnd": "2019-07-18T00:00:00",
  "trainStart": "2016-07-19T00:00:00"
}

15 · 2020-01-21T00:00:00 → 2020-07-21T00:00:00

{
  "config": {
    "bb_period": 24,
    "bb_std": 2.0,
    "max_hold": 20,
    "momentum_period": 12,
    "squeeze_lookback": 50,
    "squeeze_percentile": 25
  },
  "isSharpe": 1.001464366811498,
  "run": 5,
  "testEnd": "2020-07-21T00:00:00",
  "testStart": "2020-01-21T00:00:00",
  "trainEnd": "2020-01-17T00:00:00",
  "trainStart": "2017-01-23T00:00:00"
}

16 · 2020-07-22T00:00:00 → 2021-01-22T00:00:00

{
  "config": {
    "bb_period": 20,
    "bb_std": 2.0,
    "max_hold": 20,
    "momentum_period": 12,
    "squeeze_lookback": 60,
    "squeeze_percentile": 25
  },
  "isSharpe": 0.6498271970451153,
  "run": 7,
  "testEnd": "2021-01-22T00:00:00",
  "testStart": "2020-07-22T00:00:00",
  "trainEnd": "2020-07-21T00:00:00",
  "trainStart": "2017-07-24T00:00:00"
}

17 · 2021-01-25T00:00:00 → 2021-07-23T00:00:00

{
  "config": {
    "bb_period": 20,
    "bb_std": 2.0,
    "max_hold": 20,
    "momentum_period": 12,
    "squeeze_lookback": 60,
    "squeeze_percentile": 25
  },
  "isSharpe": 0.6215627525286108,
  "run": 7,
  "testEnd": "2021-07-23T00:00:00",
  "testStart": "2021-01-25T00:00:00",
  "trainEnd": "2021-01-22T00:00:00",
  "trainStart": "2018-01-25T00:00:00"
}

18 · 2021-07-26T00:00:00 → 2022-01-26T00:00:00

{
  "config": {
    "bb_period": 20,
    "bb_std": 2.0,
    "max_hold": 20,
    "momentum_period": 12,
    "squeeze_lookback": 60,
    "squeeze_percentile": 25
  },
  "isSharpe": 0.7276443172980541,
  "run": 7,
  "testEnd": "2022-01-26T00:00:00",
  "testStart": "2021-07-26T00:00:00",
  "trainEnd": "2021-07-23T00:00:00",
  "trainStart": "2018-07-26T00:00:00"
}

19 · 2022-01-27T00:00:00 → 2022-07-27T00:00:00

{
  "config": {
    "bb_period": 20,
    "bb_std": 2.0,
    "max_hold": 20,
    "momentum_period": 12,
    "squeeze_lookback": 60,
    "squeeze_percentile": 25
  },
  "isSharpe": 0.6942362980498321,
  "run": 7,
  "testEnd": "2022-07-27T00:00:00",
  "testStart": "2022-01-27T00:00:00",
  "trainEnd": "2022-01-26T00:00:00",
  "trainStart": "2019-01-28T00:00:00"
}

20 · 2022-07-28T00:00:00 → 2023-01-27T00:00:00

{
  "config": {
    "bb_period": 20,
    "bb_std": 2.0,
    "max_hold": 20,
    "momentum_period": 12,
    "squeeze_lookback": 40,
    "squeeze_percentile": 25
  },
  "isSharpe": 0.4788736722033365,
  "run": 1,
  "testEnd": "2023-01-27T00:00:00",
  "testStart": "2022-07-28T00:00:00",
  "trainEnd": "2022-07-27T00:00:00",
  "trainStart": "2019-07-29T00:00:00"
}

21 · 2023-01-30T00:00:00 → 2023-07-28T00:00:00

{
  "config": {
    "bb_period": 16,
    "bb_std": 2.0,
    "max_hold": 20,
    "momentum_period": 12,
    "squeeze_lookback": 40,
    "squeeze_percentile": 25
  },
  "isSharpe": -0.29724994868578253,
  "run": 0,
  "testEnd": "2023-07-28T00:00:00",
  "testStart": "2023-01-30T00:00:00",
  "trainEnd": "2023-01-27T00:00:00",
  "trainStart": "2020-01-30T00:00:00"
}

22 · 2023-07-31T00:00:00 → 2024-01-31T00:00:00

{
  "config": {
    "bb_period": 16,
    "bb_std": 2.0,
    "max_hold": 20,
    "momentum_period": 12,
    "squeeze_lookback": 40,
    "squeeze_percentile": 25
  },
  "isSharpe": -0.04138446471836797,
  "run": 0,
  "testEnd": "2024-01-31T00:00:00",
  "testStart": "2023-07-31T00:00:00",
  "trainEnd": "2023-07-28T00:00:00",
  "trainStart": "2020-07-31T00:00:00"
}

23 · 2024-02-01T00:00:00 → 2024-08-01T00:00:00

{
  "config": {
    "bb_period": 16,
    "bb_std": 2.0,
    "max_hold": 20,
    "momentum_period": 12,
    "squeeze_lookback": 40,
    "squeeze_percentile": 25
  },
  "isSharpe": -0.09723595905980115,
  "run": 0,
  "testEnd": "2024-08-01T00:00:00",
  "testStart": "2024-02-01T00:00:00",
  "trainEnd": "2024-01-31T00:00:00",
  "trainStart": "2021-02-01T00:00:00"
}

24 · 2024-08-02T00:00:00 → 2025-01-31T00:00:00

{
  "config": {
    "bb_period": 16,
    "bb_std": 2.0,
    "max_hold": 20,
    "momentum_period": 12,
    "squeeze_lookback": 40,
    "squeeze_percentile": 25
  },
  "isSharpe": -0.2124049755544185,
  "run": 0,
  "testEnd": "2025-01-31T00:00:00",
  "testStart": "2024-08-02T00:00:00",
  "trainEnd": "2024-08-01T00:00:00",
  "trainStart": "2021-08-02T00:00:00"
}

25 · 2025-02-03T00:00:00 → 2025-08-01T00:00:00

{
  "config": {
    "bb_period": 16,
    "bb_std": 2.0,
    "max_hold": 20,
    "momentum_period": 12,
    "squeeze_lookback": 40,
    "squeeze_percentile": 25
  },
  "isSharpe": -0.15820155412422754,
  "run": 0,
  "testEnd": "2025-08-01T00:00:00",
  "testStart": "2025-02-03T00:00:00",
  "trainEnd": "2025-01-31T00:00:00",
  "trainStart": "2022-02-03T00:00:00"
}

26 · 2025-08-04T00:00:00 → 2026-02-04T00:00:00

{
  "config": {
    "bb_period": 16,
    "bb_std": 2.0,
    "max_hold": 20,
    "momentum_period": 12,
    "squeeze_lookback": 60,
    "squeeze_percentile": 25
  },
  "isSharpe": 0.2295928954622946,
  "run": 6,
  "testEnd": "2026-02-04T00:00:00",
  "testStart": "2025-08-04T00:00:00",
  "trainEnd": "2025-08-01T00:00:00",
  "trainStart": "2022-08-04T00:00:00"
}

27 · 2026-02-05T00:00:00 → 2026-08-05T00:00:00

{
  "config": {
    "bb_period": 16,
    "bb_std": 2.0,
    "max_hold": 20,
    "momentum_period": 12,
    "squeeze_lookback": 60,
    "squeeze_percentile": 25
  },
  "isSharpe": 0.5210377076407142,
  "run": 6,
  "testEnd": "2026-08-05T00:00:00",
  "testStart": "2026-02-05T00:00:00",
  "trainEnd": "2026-02-04T00:00:00",
  "trainStart": "2023-02-06T00:00:00"
}

28 · 2026-08-06T00:00:00 → 2026-11-10T00:00:00

{
  "config": {
    "bb_period": 16,
    "bb_std": 2.0,
    "max_hold": 20,
    "momentum_period": 12,
    "squeeze_lookback": 50,
    "squeeze_percentile": 25
  },
  "isSharpe": 0.7913572457562704,
  "run": 3,
  "testEnd": "2026-11-10T00:00:00",
  "testStart": "2026-08-06T00:00:00",
  "trainEnd": "2026-08-05T00:00:00",
  "trainStart": "2023-08-07T00:00:00"
}

Run summary

Price observations	4240
Ending equity	1.10339
Total return	10.34%
Days with target changes	260
Cumulative target change	26000.00%
Cumulative synthetic rebalance turnover	26000.00%
Target gross exposure	0.00%
Target net exposure	0.00%
Target cash residual	100.00%
Effective gross exposure	0.00%
Effective net exposure	0.00%
Effective cash residual	100.00%

Latest asset weights

Market	Target	Effective
SPY	0.00%	0.00%

Target change measures changes in rule weights. Synthetic rebalance turnover also accounts for weight drift after returns; even unchanged targets can require rebalancing. Cash is the signed residual after net exposure.

Accounting changes on identical inputs

{
  "changedReturnDays": 2,
  "correctedTerminalEquity": 1.103391129697458,
  "legacyTerminalEquity": 1.1253448095505827,
  "maximumDailyReturnDelta": 0.012542314447365976,
  "model": "coherent-lagged-target-v2",
  "terminalEquityDelta": -0.021953679853124797
}

Full run identity and technical record

{
  "inputHash": "88bde742cfb27ffcc612439c8e267028d5cf5a9a66771d65927b86949dca809c",
  "ruleVersion": null,
  "sameInputAccountingCorrection": {
    "changedReturnDays": 2,
    "correctedTerminalEquity": 1.103391129697458,
    "legacyTerminalEquity": 1.1253448095505827,
    "maximumDailyReturnDelta": 0.012542314447365976,
    "model": "coherent-lagged-target-v2",
    "terminalEquityDelta": -0.021953679853124797
  },
  "sourceHashes": {
    "scripts/build_data.py": "e3dcc988d80a46f7f5a24396bb4ffcac240da8e1249de18a5a282eacccc52320",
    "scripts/enrich_metrics.py": "05611fa9c6de11c261f631cdd8a3314212e7c567f24878a396d057d88752051c",
    "scripts/evidence_v2.py": "c4c6523dbbb9513464dca25150f42cbaac7cbfd71bd8afdc855659b2c763d72e",
    "scripts/performance_io.py": "42282ff10697ceb56dc7ca2edf79538c2e1e8344da8e6d69ceac4d16ba5c668a",
    "scripts/recompute_evidence.py": "a7f59004cb7c356940ee3748439024cd83cac434acb90c0bead2ae19f81be127",
    "scripts/replay_evidence.py": "4e04d937c19b9040da6dc9c3c80ac22181b45ffba0131f3a63a4def95865fad6",
    "scripts/requirements.txt": "7424048072a2cf3d8c3b4e4f37a5b36c1e7ff3732d893c43295d17d85c5f97d1",
    "scripts/strategies/bb_kc_squeeze.py": "cdabc2ffcb4094b3d2f173e34ce44be119345c67368bd71e46e66174827d7e10",
    "scripts/strategy_evidence.py": "a3a93d62a84298470af3eb8e7d74e9f0ca0d29cf672d1d2d5449b41904e3d58c"
  },
  "runId": "f9499e41f0475afdd5f4582461bb0dc42c2269dc5f27abbacf296d39570b2a05",
  "generatedAt": "2026-11-11T10:55:31.449953+00:00",
  "executionModel": {
    "cash": "1 - sum(weights); residual may exceed one or be negative for shorts/leverage.",
    "decision": "Target weights use bars through close t; previous targets earn (t-1,t].",
    "feesBasisPoints": 0,
    "fills": "Synthetic daily target allocations, not broker orders or fills; financing/borrow costs omitted.",
    "id": "synthetic-daily-target-v3",
    "rebalanceTurnover": "Sum(abs(target[t] - target[t-1]*(1+assetReturn[t])/(1+grossReturn[t]))); one-way risky notional at close t after returns, divided by pre-trade equity.",
    "return": "Sum of previous target weight times each asset close-to-close return; cash return is zero.",
    "targetChange": "Sum(abs(target[t] - target[t-1])); changes in rule targets only.",
    "wfo": "Candidate retains its own hypothetical state; first test return uses previous published target."
  }
}

Downloads

1. Download a complete bundle

2. Replay the arithmetic

3. Obtain and compare inputs

4. Recompute the original strategy

Parameters used

Walk-forward selections

Run summary

Latest asset weights

Accounting changes on identical inputs

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