Arsenal BTC v2: The Engine Got an Upgrade

A few days ago in Issue #50 I told you I was running an extended parameter sweep specifically to find a more aggressive Arsenal BTC variant.

The sweep ran. 282 million total parameter combinations evaluated.

The new engine is forward-tested, validated, and live.

Arsenal BTC v2 is now the engine on the dashboard, in the signals, and in my personal portfolio.

Important first point: your current position doesn’t change. Both engines are sitting at 50% LONG as of this writing. No rebalance needed today. Same allocation, better engine going forward.

Let me show you the numbers.

Arsenal v2 adds nearly 7 percentage points of annual return and improves Sharpe and Sortino.

It does accept a wider full-period drawdown (-34.5% vs -27.4%), but as you’ll see in a sec, that drawdown lives in the older data and isn’t representative of the regime we’re trading in now.

2023+ Window: The One That Matters

The 10-year backtest is dominated by older data that doesn’t reflect how BTC trades today.

Read that again because it’s extremely important.

I can summarize it in a single sentence: Bitcoin will never have 10,000%+ moves ever again like it did in the first two cycles.

The window I actually care about is post-FTX, post-cycle-top.. 2023 onward, 3.32 years:

This is where it gets interesting. Arsenal v2 ties the old engine on tightest drawdown (-18.7%) but delivers 64% more total return.

In the regime that’s actually happening, it’s not a tradeoff. It’s a clean upgrade.

Last 12 Months

Most recent year only (2025-04 → 2026-04). This window includes the December crash and the tariff-driven selloff in March:

• Arsenal v1: +10.5%, max drawdown -7.2%

• Arsenal v2: +23.2%, max drawdown -9.6%

• Buy & Hold BTC: -17.0%, max drawdown -49.7%

Arsenal v2 doubled the old engine’s return over the past year while giving back only 2.4 percentage points of additional max drawdown. Both engines stomped buy and hold, which lost 17% over the same period.

Forward Tested. The Engine Survives.

Backtests are easy. Forward tests are where engines die. I ran the full battery against Arsenal v2: out-of-sample 60/40 split, 2,000-sim Monte Carlo bootstrap, BTC-specific crisis stress test (Mt.Gox, ICO bust, COVID, Luna, FTX, SVB, Aug 2024 yen carry, Tariff 2025), and parameter sensitivity sweep.

Arsenal v2 passed 4 of 5 strict criteria.

The one “fail” is a Sharpe-degradation threshold that every BTC engine I’ve tested has failed in the post-2022 era. It’s a regime story.. the existing Arsenal v1 fails the same criterion. Not a v2-specific overfit, just BTC behaving differently since the FTX bottom.

The number that matters most.. the out-of-sample test Sharpe (data the optimizer never saw).. Arsenal v2 scored 1.548 versus Arsenal v1’s 1.187. That’s a 30% improvement on the only metric that speaks to forward performance.

Monte Carlo gave the cleanest signal: Arsenal v2’s actual Sharpe (2.326) sits essentially on top of the bootstrap median (2.270). The realized performance isn’t a lucky path. Robustness confirmed.

What To Expect Going Forward

Arsenal v2 is a more responsive engine. The tradeoff is in trading frequency:

• Arsenal v1: roughly 7 position changes per year. About one every 7 weeks.

• Arsenal v2: roughly 20 position changes per year. About one every 2-3 weeks.

That sounds chaotic, but the actual data over the last 12 months tells a different story:

• 49% of two-week windows had zero position changes

• 80% of two-week windows had 0 or 1 changes

• Worst-case windows: 3 changes in 14 days, and only 4% of windows hit that

• 5 of the past 12 months had zero or one change (April, June, July, August, November)

• Active months coincide with real BTC events: December crash, March tariff selloff, September chop

Arsenal v2 isn’t constantly flipping. It’s mostly quiet, with active stretches that line up with actual market volatility. When the market is genuinely turbulent, expect more frequent updates from me. When it’s calm, the engine sits and so do we.

Today’s Position: 50% LONG

Both engines agree. No rebalance needed today. Going forward, all flash alerts, weekly issues, and dashboard signals will route through Arsenal v2.

"The first soap was made from heroes' ashes, like the first monkey shot into space. Without pain, without sacrifice, we would have nothing."

The math is the math. The engine got better. We’re rolling forward.

Next sweep target: $ETH.

— Durden out.

✊🧼

Postscript: I’m getting very close with launching the new members area where paid subscribers will have direct access to every engine. Stay tuned for updates.

Disclaimer: This content is for educational and informational purposes only. It does not constitute financial advice, investment advice, or a recommendation to buy or sell any asset. Trading equities and futures involves substantial risk of loss, including the potential for loss exceeding your initial investment.

Past performance, whether backtested or live, does not guarantee future results. Backtested performance has inherent limitations: it is designed with the benefit of hindsight, does not reflect actual trading, and does not account for all factors that may affect real-world execution.

The author is not a licensed financial advisor. Always do your own research and consult a qualified financial professional before making investment decisions. You are solely responsible for your own trading decisions.