Daily Alpha Brief — 2026-10-21 — SIDEWAYS regime across majors

Bayesian crypto brief for 2026-10-21: SIDEWAYS regime, strategy performance, weight shifts, and quant-vs-crowd sentiment across 9 symbols.

TL;DR

• Dominant regime: SIDEWAYS (2 bullish / 1 bearish of 9 symbols).
• Top signal: post_shock_reversal on WIF raised 0.359 (0.16 → 0.52).
• Shadow portfolio: $720 (-28.01%), 0 open, 35% win rate.

Shadow portfolio value since inception (dashed line = $1,000 starting capital).

Current Bayesian reliability weights, averaged across the universe.

Detected regime per symbol (EMA200 + ADX); % = lead-strategy conviction.

🌐 Market Indices

Crowd reads neutral at 51/100; BTC dominance 60.1% signals balanced.

🌐 Market Overview

Economic (FRED):

Stablecoin dominance 9.1% (risk-on); yield curve regime Flat.

Funding Rates (contrarian — heavy positive = crowded longs to fade):

Economic Calendar: Next FOMC: in 7 days | Next CPI: in 23 days | position-size modifier 1.00×.

📊 Regime Analysis

Regime per symbol from EMA200 + ADX on daily candles, with the fusion signal.

The book is broadly bullish: 2 BULL / 1 BEAR of 9 symbols.

🔗 Correlation Signals

Stable pairs (r > 0.70): SOL/XRP: r=0.95 ✅ | SOL/SUI: r=0.93 ✅ | WIF/SUI: r=0.92 ✅ | ETH/SOL: r=0.92 ✅ | DOGE/WIF: r=0.92 ✅ | SOL/WIF: r=0.91 ✅

Index signals: BTC dominance NEUTRAL → no rotation; Fear & Greed contrarian NONE.

⚙️ Strategy Performance

Aggregate 7-day performance per strategy (replayed across the universe). Edge = win-rate × avg P&L per trade — the table is sorted by it.

All P&L figures normalized to a 100 USDT position size for comparability (not summed across symbols).

🧠 Bayesian Weight Shifts

WIF/USDT (SIDEWAYS):

Volume_spike is the dominant signal here with 71 trades over 7d, a 30% win-rate (borderline rule 2 but Sharpe of 8.12 and +586 pnl are strongly positive), and receives a small additional SIDEWAYS regime bump to 0.65. Bollinger and walk_forward_ema each had only 1 trade on 7d with sharply negative Sharpes (-7.22) and negative pnl, triggering rule 3 cuts; however, thin data (rule 1) limits the move to modest reductions. Post_shock_reversal has only 2 trades on 7d so rule 1 applies, keeping it near its current weight despite the single-trade outlier metrics. Sentiment_strategy is nudged down slightly given weak confluence (50%) and near-zero composite across both windows, while rsi_macd, ema_cross, tsmom, correlation_strategy, and macro_strategy all have zero trades and are held at or near their current weights per rule 1.

DOGE/USDT (BEAR):

rsi_macd, ema_cross, tsmom, correlation_strategy, and macro_strategy all have zero trades across both windows, so rule 1 applies and weights are held near current with only a minimal BEAR-regime nudge downward for the momentum strategies. Bollinger has only 1 trade but it posted a deeply negative Sharpe (-7.22) and loss, so I trimmed it slightly per rule 3 despite thin data. volume_spike has 53 7d trades but a 23% win-rate (rule 2 persistent underperformance), so I cut it from 0.338 toward 0.28 despite its misleadingly high 24h Sharpe being driven by very few candles. walk_forward_ema has only 2 7d trades (rule 1 low-sample guard), so despite stellar metrics I hold it near current rather than chase noise, trimming slightly because BEAR regime conflicts with its thin-sample 100% win signals. post_shock_reversal stays close to current at 0.33 — its 7d win-rate of 32% is weak and just above the rule-2 cut threshold, and while its Sharpe looks high the pnl is modest relative to its mean-reversion nature in a BEAR regime; sentiment_strategy is cut from 0.583 toward 0.52 because coverage is only 3 sources, confluence is just 33%, and the near-zero composite offers no directional signal, warranting a move back toward neutral.

XRP/USDT (SIDEWAYS):

rsi_macd, ema_cross, tsmom, correlation_strategy, and macro_strategy all have zero trades in both windows, so rule 1 holds them near current weights with no meaningful adjustment. Bollinger had only 1 trade with a sharply negative Sharpe (-7.22) and loss, so I trimmed it slightly per rule 3 despite SIDEWAYS favouring it — thin data caps the move to within ~0.05. volume_spike has sufficient 7d sample (58 trades) but a dismal 22% win-rate triggering rule 2 (persistent underperformance), so I cut it materially from 0.496 to 0.380; the ugly 24h metrics (-4.34 Sharpe, 18% win) reinforce this despite the positive 7d Sharpe being inflated by fat-tail skew. post_shock_reversal’s 7d picture (26% win, negative Sharpe, negative pnl across 27 trades) overrides the impressive 24h spike per rule 2/3, so I reduced it from 0.350 to 0.290; walk_forward_ema has only 1 winning trade so rule 1 limits any uplift to a token +0.005. sentiment_strategy shows stable 3-source coverage with 67% confluence at near-neutral composite, which is adequate but not strong, so a small downward drift from 0.635 to 0.620 is appropriate.

📡 Signal Outlook

💼 Shadow Portfolio

$1,000 USDT paper portfolio, 1% risk/trade, MEXC fees modelled. No real capital is deployed.

📡 Discourse Radar

Crowd-vs-quant sentiment from CryptoCompare news, crypto RSS, the macro feeds (FT / Fed / CNBC), and the Fear & Greed index. (Reddit retired — Responsible Builder Policy restrictions, 2026.)

• Fear & Greed: +0.50 (bullish crowd).
• Macro signal (FT/Fed/CNBC): -0.02 (neutral) — “IMF warns bond yields could see a ‘disorderly’ spike as debt, inflation risks worsen”.

Most-talked alt: DOGE/USDT at +0.81 (bullish crowd lean).

📰 Today’s Key Reads

Curated from 3 sources monitored today:

🟢 Swiss regulator FINMA approves country’s first spot bitcoin ETF for retail investors — theblock — Score: +0.42

🟢 AnchorWatch Trust Company launches bitcoin custody service with up to $370 million in insurance per client — theblock — Score: +0.34

⚠️ CME plans tungsten futures as demand for weapons rises — ft_markets — Score: -0.16

⚠️ Iran war tilts balance of global oil power towards Americas — ft_markets — Score: -0.15

⚠️ Williams says Fed may not have to hike rates in 2027, at odds with traders — cnbc_finance — Score: +0.14

Academic Footnote

Borgards (2021) — momentum and the cross-section of crypto returns.

Disclaimer

This is algorithmic analysis only, not financial advice.