Dev Blog

Daily analyst notes on our AI strategies, the market, and sector trends.

• Strategy

  channel-pullback: A Trend-Following Dip-Buyer That Falls Short of the Validation Bar

  Jul 21, 2026 · The live channel-pullback strategy posted a modest +7.62% backtest return on a low 39% win rate, but our walk-forward validation flagged it as failing despite three of four folds being positive. Recent live activity has been quiet and roughly flat around a $10K book.

• Strategy

  Donchian Breakout: A Trend-Follower Stuck at the Gate

  Jul 21, 2026 · The donchian-breakout strategy posts a modest 6.95% backtest return but fails our validation gate, and its live paper account has stalled — six straight scheduled runs executed zero trades while rejecting every candidate.

• Strategy

  bollinger-reversion: A Textbook Mean-Reversion Strategy That Stumbles Out-of-Sample

  Jul 21, 2026 · The live bollinger-reversion strategy shows a respectable 17.55% full-sample backtest and a 64% win rate, but failed cross-validation as its edge decays fold-over-fold and out-of-sample returns collapse to near zero.

• Strategy

  Dual-Momentum Goes Quiet: Strong Backtest, Shaky Validation

  Jul 21, 2026 · The dual-momentum strategy posts a healthy 23.5% backtest return but fails out-of-sample validation and has sat entirely in cash for over a week. We weigh its trend-following thesis against thin win rates, heavy turnover, and one ugly drawdown fold.

• Strategy

  News-Sentiment Strategy: A Cautious Signal in Search of a Sample

  Jul 21, 2026 · Headmars' live news-sentiment strategy shows tight risk control and one promising out-of-sample fold, but its validation gate failed and the trade sample is too thin to trust yet.

• Strategy

  Mean-Reversion Goes Live — But the Validation Ledger Says Wait

  Jul 21, 2026 · The RSI-driven mean-reversion strategy posted a 14.73% backtest return with a 70.6% win rate, yet it failed walk-forward validation and has sat idle through July. Strong in-sample, shaky out-of-sample — a textbook reason to keep position sizes small.

• Strategy

  momentum-code: Strong Backtest, Stalled Live Book, Failed Validation Gate

  Jul 21, 2026 · The momentum-code strategy posts a 19.76% backtest return with four positive walk-forward folds, yet its validation gate still fails and its live paper book has gone quiet, rejecting every trade for a week straight.

• Strategy

  RSI Snap-Back: A Patient Mean-Reversion Bot Currently Sitting on Its Hands

  Jul 21, 2026 · RSI Snap-Back backtests to a respectable 20.95% total return but carries a 23.73% drawdown and no out-of-sample validation. Its live book has been fully in cash across its last six scheduled runs.

• Sector

  Mapping the Tracked Universe: Where the 1,700 Live

  Jul 21, 2026 · Technology dominates the Headmars tracked universe by sheer company count, but the sector's aggregate market-cap figures diverge so sharply from headcount that composition — not the raw totals — is the story worth watching.

• Market News

  AI Infrastructure Steals the Show as Earnings Season Looms

  Jul 21, 2026 · A quiet, neutral-leaning news day for the megacaps was punctuated by IREN's $2.8B AI cloud deal and a broad chip-stock recovery, with Alphabet, Microsoft and Apple all circling the AI infrastructure trade ahead of Q2 earnings.

• Sector

  Reading the Tracked Universe: Where the 1,674 Companies Cluster

  Jul 20, 2026 · A look at the 1,674 companies in Headmars' tracked universe shows Technology, Industrials, and Healthcare accounting for two-thirds of all listings, while the raw market-cap totals betray obvious cross-listing noise. Breadth, not the headwater dollar figures, is the cleaner signal.

• Market News

  AI Rotation Rattles the Tape as Earnings Week Looms

  Jul 20, 2026 · Neutral coverage dominated a jittery news day, with roughly two bullish headlines for every bearish one, as a chip-sector selloff and Apple's climb back to the top valuation spot competed with looming Big Tech earnings. GOOGL drew the heaviest news flow ahead of next week's Alphabet report.

• Sector

  Inside the Tracked Universe: A Tech-Heavy Map With a Long International Tail

  Jul 19, 2026 · Across the 1,653 companies Headmars tracks, Technology alone accounts for nearly a third of names, while the sector cap totals reveal cross-listing noise investors should treat with care.

• Market News

  AI Rotation Rattles Big Tech as Sentiment Tilts Cautious

  Jul 19, 2026 · A quiet-looking tape masks a sharp AI-driven rotation, with bearish headlines edging out bullish ones and the story centering on GOOGL, AAPL, and MSFT. Apple's climb back to the top valuation spot stands out against warnings of a cooling chip trade.

• Strategy

  Channel-Pullback: A Trend-Follower That Wins Small, Loses Rarely, and Fails Its Own Validation Gate

  Jul 18, 2026 · The live channel-pullback strategy has returned 7.62% in backtest with a modest 0.4 Sharpe, but its walk-forward validation did not pass — driven by one badly negative fold and a low deflated Sharpe ratio.

• Strategy

  Donchian Breakout: Strong Out-of-Sample, But the Validation Gate Says Wait

  Jul 18, 2026 · The donchian-breakout strategy pairs a classic trend-following thesis with encouraging recent out-of-sample folds, yet it failed our validation gate on a weak deflated Sharpe and has gone quiet, logging only rejected orders for a week.

• Strategy

  Bollinger-Reversion: Strong Backtest, Fading Out-of-Sample Edge

  Jul 18, 2026 · The bollinger-reversion strategy posted a respectable 17.55% backtest return with a 64% win rate, but walk-forward validation failed as its edge decayed sharply across folds and live paper trading has stalled.

• Strategy

  Dual-Momentum Goes to Cash: A Strong Backtest That Hasn't Cleared Validation

  Jul 18, 2026 · The dual-momentum strategy posts a healthy 23.5% backtest return but fails our out-of-sample validation gate, and it currently sits entirely in cash after six consecutive no-trade runs.

• Strategy

  news-sentiment: A Cautious Signal That Rarely Fires

  Jul 18, 2026 · The live "news-sentiment" strategy posts a near-flat 0.19% backtest return on just two trades, and it fails cross-validation with only one of four folds active. Its low drawdown is real, but so is the risk that the edge is a single-window fluke.

• Strategy

  Mean-Reversion: Strong Backtest, Failing Out-of-Sample Grade

  Jul 18, 2026 · The RSI-based mean-reversion strategy posted a 14.73% backtest return with a 70.59% win rate, but formal walk-forward validation failed and its most recent out-of-sample fold went negative. Live paper trading has stalled with no executed trades since late May.

• Strategy

  momentum-code: Strong Backtest, Stalled Live, Failed Validation Gate

  Jul 18, 2026 · The momentum-code strategy shows a solid 19.76% backtest with four positive validation folds, yet it failed its overall validation gate and has gone quiet in live paper trading, rejecting every scheduled order for over a week.

• Strategy

  RSI Snap-Back: A Disciplined Mean-Reversion Bet That's Currently Sitting on Its Hands

  Jul 18, 2026 · RSI Snap-Back is a live mean-reversion strategy on the Mag-7 that has backtested to a 20.95% total return with a healthy 66.67% win rate — but a below-1 Sharpe, a 23.73% drawdown, and six straight days of zero trades all deserve scrutiny.

• Sector

  Inside the Tracked Universe: Tech Leads by Count, but the Cap Column Tells a Messier Story

  Jul 18, 2026 · A structural look at the 1,644 companies Headmars tracks across eight sectors, where Technology dominates by headcount while the market-cap totals reveal cross-listing noise worth watching.

• Market News

  Daily Roundup: AI Narratives Dominate a Mostly-Neutral Tape

  Jul 18, 2026 · Friday's news flow leaned heavily neutral, with a slim bullish tilt, as AI-driven valuation shifts around Apple, Alphabet, and Microsoft crowded out most other themes. Chip-sector jitters and a fresh "DeepSeek moment" added a note of caution beneath the calm.

• Strategy

  Channel-Pullback: A Mean-Reversion Bet That Passes the Eye Test but Fails the Stats Test

  Jul 17, 2026 · The live channel-pullback strategy has posted a modest 7.62% backtest return by buying dips in uptrends, but its low win rate and a failed walk-forward validation flag real overfitting and regime risk.

• Strategy

  Donchian Breakout: Strong Out-of-Sample Folds, but Validation Says Not Yet

  Jul 17, 2026 · The donchian-breakout trend-follower posts a modest 6.95% backtest return with resilient recent folds, yet fails our robustness gate and has gone quiet in live trading. It's a promising idea that hasn't earned deployment confidence.

• Strategy

  Bollinger-Reversion: A Textbook In-Sample Winner That Validation Won't Clear

  Jul 17, 2026 · The bollinger-reversion strategy posts a respectable 17.55% backtest return with a 63.89% win rate, but walk-forward validation fails and out-of-sample performance decays to near-flat. Live paper equity now sits below its starting stake.

• Strategy

  Dual-Momentum: Strong Backtest, Failed Validation, and a Portfolio Sitting in Cash

  Jul 17, 2026 · Dual-momentum posted a 23.5% backtest return but failed our walk-forward validation gate, and the live sleeve has traded nothing for a week — parked entirely in cash.

• Strategy

  News-Sentiment: A Disciplined Signal That Rarely Pulls the Trigger

  Jul 17, 2026 · The live news-sentiment strategy is up a slim 0.19% with only two backtest trades, and while its risk profile is tidy, validation failed on the fold-consistency test.

• Strategy

  Mean-Reversion: Strong In-Sample, Shaky Out-of-Sample

  Jul 17, 2026 · The live RSI-based mean-reversion strategy posts a 14.73% backtest return with a 70.59% win rate, but formal validation failed and the most recent out-of-sample fold turned negative. It has also gone quiet, firing no trades for six straight scheduled runs.

• Strategy

  momentum-code: Strong Backtest, Stalled Live Book, Failed Validation Gate

  Jul 17, 2026 · The momentum-code strategy posts a solid 19.76% backtest return with four positive out-of-sample folds, yet its validation gate failed on a low deflated Sharpe and its live paper book has gone six sessions without executing a trade. A watch-list name, not a conviction buy.

• Strategy

  RSI Snap-Back: A Disciplined Mean-Reversion Bet That's Currently Sitting on Its Hands

  Jul 17, 2026 · RSI Snap-Back posts a respectable 20.95% backtested return on Mag-7 mean reversion, but a null validation record and six straight no-trade sessions temper the enthusiasm.

• Sector

  Mapping the Tracked Universe: Where the 1,633 Companies Cluster

  Jul 17, 2026 · A count-based tour of the eight sectors on the Headmars platform shows Technology, Industrials, and Healthcare accounting for the bulk of tracked names. It also flags why the raw market-cap totals deserve a skeptical eye.

• Market News

  Daily Roundup: A Korea Rout Rattles Futures While AI Names Split the Tape

  Jul 17, 2026 · A sharp sell-off in South Korea and revived AI-spending worries dragged futures lower, even as Alphabet and Microsoft drew constructive headlines. Sentiment across the day's coverage skewed cautiously positive, with neutral commentary dominating the flow.

• Strategy

  channel-pullback: A Trend-Following Bet That Backtests Better Than It Validates

  Jul 16, 2026 · The live channel-pullback strategy has returned 7.62% in backtest with a modest 0.40 Sharpe, but failed out-of-sample validation as one bad fold and a low deflated Sharpe expose fragility beneath the headline number.

• Strategy

  Donchian Breakout: A Textbook Trend-Follower Stuck in Neutral

  Jul 16, 2026 · The 20-day breakout strategy shows encouraging out-of-sample folds but a low Sharpe, a deep drawdown, and a failed validation gate — and it hasn't executed a live trade in over a month.

• Strategy

  Bollinger-Reversion: A Textbook Backtest That Won't Reproduce Live

  Jul 16, 2026 · The mean-reversion strategy posts a 17.55% full-sample backtest return but fails validation, with out-of-sample performance decaying to near-zero. Live, it has gone quiet — no executed trades in over a month and equity slightly underwater.

• Strategy

  Dual-Momentum Goes Quiet: Strong Headline Returns, a Failed Validation Gate, and a Portfolio in Cash

  Jul 16, 2026 · The live dual-momentum strategy posts a respectable 23.5% backtest return but fails its own validation gate and has sat entirely in cash through mid-July. We weigh its trend-following thesis against a punishing rough fold and a low win rate.

• Strategy

  News-Sentiment: A Promising Thesis Still Waiting for Its Sample Size

  Jul 16, 2026 · The news-sentiment strategy is live but has traded only twice in a 451-day backtest, and it failed walk-forward validation with just one of four folds active. Its thin, one-window track record makes a nominal 0.19% return impossible to trust yet.

• Strategy

  Mean-Reversion Goes Live — But Walk-Forward Validation Says Not So Fast

  Jul 16, 2026 · The RSI-based mean-reversion strategy posts a respectable 14.73% backtest return and a 70.59% win rate, yet its walk-forward validation fails on out-of-sample data, flashing a clear overfitting warning. It is currently live but idle, holding cash while it waits for oversold signals.

• Strategy

  momentum-code: Strong Walk-Forward, But the Gate Says Wait

  Jul 16, 2026 · The live momentum strategy shows a clean 4-of-4 positive walk-forward and a 19.76% backtest, yet its validation gate failed and it has been cash-constrained for two weeks. A promising signal held back by capital and a low deflated Sharpe.

• Strategy

  RSI Snap-Back: A Disciplined Mean-Reversion Bet on the Mag-7, Currently Idle

  Jul 16, 2026 · The RSI Snap-Back strategy posts a solid 20.95% backtested return with a two-thirds win rate, but a steep 23.73% drawdown, an empty live book, and the absence of out-of-sample validation temper the enthusiasm.

• Sector

  Mapping the Tracked Universe: Technology Leads a Long, Diversifying Tail

  Jul 16, 2026 · Across roughly 1,400 tracked companies, Technology, Industrials, and Healthcare account for more than three-quarters of the names — but the composition, and some noisy market-cap figures, reward a closer look. Company counts tell a clearer story than the headline dollar totals.

• Market News

  Daily Roundup, July 16: Big Tech Headlines Skew Bullish Beneath a Sea of Neutral

  Jul 16, 2026 · A quiet-looking tape hides a constructive tilt: bullish headlines outnumbered bearish ones by more than three to one across GOOGL, MSFT, and AAPL, even as the majority of coverage stayed neutral. Alphabet's $80B equity plan and Microsoft's enterprise-AI push led the flow.

• Strategy

  Channel-Pullback: A Mean-Reversion Bet That Backtests Fine but Fails Validation

  Jul 15, 2026 · The channel-pullback strategy posts a modest 7.62% backtest return with a low 0.4 Sharpe, and despite three of four positive folds it fails out-of-sample validation on a deflated Sharpe of just 0.196. It remains live but should be treated as a candidate, not a graduate.

• Strategy

  Donchian Breakout: A Live Trend-Follower That Hasn't Cleared Validation

  Jul 15, 2026 · The donchian-breakout strategy posts a modest 6.95% backtest return with a weak 0.34 Sharpe, and although three of four walk-forward folds were positive, it failed our deflated-Sharpe gate. Live, it has gone quiet — a week of scheduled runs with zero executions.

• Strategy

  bollinger-reversion: A Textbook Mean-Reversion Strategy That Stalls Out of Sample

  Jul 15, 2026 · The bollinger-reversion strategy posts a respectable 17.55% backtest return but fails validation as its edge decays fold-over-fold, and it has gone quiet in live trading.

• Strategy

  Dual-Momentum: Strong on Aggregate, Shaky Under Cross-Validation

  Jul 15, 2026 · The live dual-momentum strategy posts a 23.5% backtest return but fails formal validation, and it has sat entirely in cash for its last six scheduled runs.

• Strategy

  News-Sentiment: A Live Strategy That Barely Trades — And That's the Story

  Jul 15, 2026 · The news-sentiment strategy is live but has fired only two backtested trades for a near-flat 0.19% return, and its walk-forward validation failed with just one of four folds active. Its caution is a feature, but the thin trade count leaves its edge statistically unproven.

• Strategy

  Mean-Reversion in Review: A Strong Backtest That Walk-Forward Validation Won't Sign Off On

  Jul 15, 2026 · The RSI-driven mean-reversion strategy posts a 14.73% backtest return and a 70.6% win rate, but failed out-of-sample validation as its most recent fold turned negative. It has sat idle in live paper trading since late May, waiting for oversold conditions that haven't arrived.