Daily Alpha Brief — 2026-10-31 — BEAR regime across majors

Bayesian crypto brief for 2026-10-31: BEAR regime, strategy performance, weight shifts, and quant-vs-crowd sentiment across 9 symbols.

TL;DR

• Dominant regime: BEAR (0 bullish / 5 bearish of 9 symbols).
• Top signal: walk_forward_ema on SOL cut 0.228 (0.77 → 0.54).
• Shadow portfolio: $721 (-27.93%), 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 fear at 36/100; BTC dominance 59.7% signals balanced.

🌐 Market Overview

Economic (FRED):

Stablecoin dominance 9.6% (risk-on); yield curve regime Flat.

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

Economic Calendar: Next FOMC: in 39 days | Next CPI: in 13 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 bearish: 0 BULL / 5 BEAR of 9 symbols.

🔗 Correlation Signals

Stable pairs (r > 0.70): DOGE/SUI: r=0.94 ✅ | SUI/AVAX: r=0.92 ✅ | BTC/SOL: r=0.91 ✅ | ETH/DOGE: r=0.91 ✅ | BTC/ETH: r=0.91 ✅ | SOL/DOGE: 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

SOL/USDT (BEAR):

In a BEAR regime the momentum strategies are favoured: ema_cross (7d 38% win but Sharpe 10.06, pnl +299) and walk_forward_ema (7d Sharpe 9.48, pnl +266) show strong positive risk-adjusted returns so both receive modest upward nudges toward their rule-4/regime ceiling, while the anomalously extreme intraday Sharpe values are treated with caution as noise. Bollinger (7d 29% win, Sharpe -3.59, pnl -117) and volume_spike (7d 29% win, Sharpe -2.85, pnl -125) both breach rule 2 with persistent sub-30% win rates and negative Sharpe, triggering cuts; bollinger additionally suffers the classic band-walk problem in a trending BEAR market. rsi_macd has a peculiarly high 7d Sharpe (5.74) with only 37% win-rate, suggesting a skewed return profile rather than consistent edge, so it is held near neutral with a small regime-aligned dip. tsmom has zero trades (rule 1 low-sample guard) and is held at its current weight; post_shock_reversal has adequate 7d trades but is a mean-reversion strategy in a BEAR trend so it is held steady with no boost; sentiment is near-neutral composite with moderate confluence so it drifts only marginally upward; correlation and macro both have zero trades and are held at current weights per rule 1.

ETH/USDT (BEAR):

volume_spike is the clearest cut: 30% 7d win-rate with a deeply negative Sharpe (-3.21) and -151 pnl triggers rule 2/3 hard, so it is cut to 0.15; tsmom has only 1 7d trade but that trade posted -44.59 pnl and a -9.88 Sharpe, so rule 1 caps the move but the strongly negative signal still warrants holding near its floor (0.20). ema_cross and walk_forward_ema both show impressive Sharpe figures (11.82 and 8.45) with positive pnl and ~47-50% win-rates in a BEAR regime where momentum strategies are directionally aligned, so both earn modest upward nudges tempered by the <55% win-rate ceiling on rule 4; rsi_macd similarly has a strong Sharpe (3.88) on 8 trades and gets a small lift. bollinger and post_shock_reversal remain near or slightly below current weights — bollinger’s 35% win-rate and thin pnl in a trending BEAR market reflects the band-walk risk, while post_shock_reversal’s near-zero pnl and a 30% win-rate keep it modestly de-risked; sentiment shows weak confluence (33% 24h, 67% 7d) with a near-neutral composite (+0.01), so it is trimmed slightly from its above-neutral current weight, and correlation_strategy/macro_strategy have zero trades and no signal, so they are held within ±0.01 of current per rule 1.

XRP/USDT (SIDEWAYS):

Volume_spike has severe 7d underperformance (18% win rate, Sharpe -7.00, -231.65 pnl across 40 trades), triggering rules 2 and 3 for a meaningful cut from 0.305 to 0.15; this directly conflicts with the SIDEWAYS regime bump that would normally apply, so the data wins per rule 6. Walk_forward_ema has only 2 7d trades but both show deeply negative Sharpe (-4.95) and negative pnl, so under rule 1 I keep the move modest but still trim it slightly from 0.253 to 0.20. Post_shock_reversal has only 2 7d trades (rule 1 low-sample guard), so despite the attractive Sharpe of 2.74 I hold it near its current weight at 0.14. Sentiment_strategy has reasonable 7d coverage (3 sources, 67% confluence) and a mildly positive composite, justifying a small hold near its current elevated weight at 0.52; all other zero-trade strategies are held at their current weights as there is no data to justify movement.

📡 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 (bearish crowd).
• Macro signal (FT/Fed/CNBC): +0.02 (neutral) — “Federal Reserve Board finalizes changes to enhance the transparency and public accountability of its”.

Most-talked alt: WIF/USDT at -0.50 (bearish crowd lean).

📰 Today’s Key Reads

Curated from 3 sources monitored today:

🔴 Bitcoin slides below $77,000, BNB drops amid Binance hack — theblock — Score: -0.61

🔴 XRP Ledger developers tighten the rules for who can hold ‘restricted’ tokens — coindesk — Score: -0.58

🔴 $6 billion Binance hack sends bitcoin, ether tumbling; Standard Chartered expects more pain — coindesk — Score: -0.56

🟢 Moody’s assigns investment-grade ratings to Ripple’s RLUSD stablecoin — theblock — Score: +0.28

⚠️ Williams says Fed may not have to hike rates in 2027, at odds with traders — cnbc_finance — Score: +0.09

Academic Footnote

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

Disclaimer

This is algorithmic analysis only, not financial advice.