Daily Alpha Brief — 2026-10-20 — SIDEWAYS regime across majors

Bayesian crypto brief for 2026-10-20: SIDEWAYS regime, strategy performance, weight shifts, and quant-vs-crowd sentiment across 9 symbols.

TL;DR

• Dominant regime: SIDEWAYS (3 bullish / 3 bearish of 9 symbols).
• Top signal: walk_forward_ema on SOL cut 0.438 (0.84 → 0.41).
• Shadow portfolio: $718 (-28.16%), 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 49/100; BTC dominance 60.2% signals balanced.

🌐 Market Overview

Economic (FRED):

Stablecoin dominance 9.3% (risk-on); yield curve regime Flat.

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

Economic Calendar: Next FOMC: in 8 days | Next CPI: in 24 days | position-size modifier 1.00×.

📊 Regime Analysis

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

The book is mixed: 3 BULL / 3 BEAR of 9 symbols.

🔗 Correlation Signals

Stable pairs (r > 0.70): SOL/XRP: r=0.94 ✅ | WIF/SUI: r=0.93 ✅ | SOL/SUI: r=0.92 ✅ | SOL/WIF: r=0.91 ✅ | DOGE/SUI: r=0.91 ✅ | SOL/BNB: 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 (BULL):

ema_cross and walk_forward_ema are both severely underperforming in a BULL regime — ema_cross has 29% 7d win-rate and -1.75 Sharpe while walk_forward_ema mirrors it at 30% win/-1.43 Sharpe with negative pnl, contradicting the regime prior (rule 6), so both are cut sharply from their inflated current weights. volume_spike also fires rule 2/3 (30% 7d win, -1.76 Sharpe, -116 pnl) and is cut to 0.20. bollinger is the surprise standout with an extraordinary 7d Sharpe of 8.69 and +451 pnl despite a modest 38% win-rate (large winners), warranting a meaningful raise from 0.33 even though mean-reversion is structurally disfavoured in a BULL; rsi_macd’s 7d Sharpe of 1.63 with positive pnl earns a moderate lift, but its poor 24h and sub-40% win-rate cap the raise. post_shock_reversal is cut slightly from its already-low weight due to negative 7d Sharpe and pnl despite a strong 24h (too few days to override the weekly); sentiment is nudged down from 0.60 given near-zero composite and only 33% 24h confluence, while correlation and macro hold near their current weights on zero-trade thin data (rule 1).

AVAX/USDT (SIDEWAYS):

In a SIDEWAYS regime, bollinger is the standout with 7d Sharpe of 6.81 and +437.91 pnl despite a modest 39% win-rate (elevated Sharpe driven by skewed returns), earning a raise per rules 3-4 and regime alignment; volume_spike similarly posts strong 7d Sharpe (6.74) and +536.90 pnl and gets a SIDEWAYS bump, but its catastrophic 24h Sharpe (-24.29) and 18% win-rate signal a very recent breakdown, so the raise is tempered. ema_cross and walk_forward_ema both show 7d win-rate of 24% with deeply negative Sharpe (-7.82) and large negative pnl (-331.69), triggering rule 2 cuts toward the low range; rsi_macd and post_shock_reversal also show persistent sub-30% win-rates with negative Sharpe and pnl, warranting meaningful reductions per rules 2-3, with post_shock_reversal cut hardest given both 24h and 7d losses. tsmom has zero trades (rule 1, held near current); sentiment is held slightly below current due to near-zero composite, zero 7d confluence, and only 2 sources indicating weak signal; correlation_strategy and macro_strategy also have zero activity and are held near their current weights per rule 1.

BTC/USDT (SIDEWAYS):

SIDEWAYS regime with deeply negative Sharpe and sub-30% win-rates on 7d for rsi_macd (-9.28 Sharpe, 28% win) and tsmom (-0.81 Sharpe, 31% win) triggered rules 2-3 cuts for both momentum strategies; ema_cross has a negative 7d Sharpe and a very high current weight of 0.746 so it is cut sharply per rules 3 and 6 (data contradicts its elevated prior in a ranging market). walk_forward_ema is catastrophic (10% win, -7.69 Sharpe, -138.93 pnl on 7d) and is pushed toward the floor per rule 2. Bollinger is the regime-aligned winner with a positive Sharpe and pnl on both windows, earning a modest raise; volume_spike also has positive Sharpe/pnl on 7d and gets a small SIDEWAYS bump per rule 5; sentiment coverage is adequate with improving 7d confluence (67%) but near-neutral composite, so it is held near current; correlation_strategy and macro_strategy show no signal activity and are held near their current weights.

📡 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: +0.00 (neutral crowd).
• Macro signal (FT/Fed/CNBC): -0.04 (neutral) — “IMF warns bond yields could see a ‘disorderly’ spike as debt, inflation risks worsen”.

Most-talked alt: DOGE/USDT at +0.66 (bullish crowd lean).

📰 Today’s Key Reads

Curated from 4 sources monitored today:

🟢 DeFi Development boosts CHAD dividend to 14% amid push to grow Solana holdings — theblock — Score: +0.48

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

🔴 Wall Street freaked out Friday, but VIX and bitcoin trades say the fear may fade Monday. — coindesk — Score: -0.30

⚠️ Williams says Fed may not have to hike rates in 2027, at odds with traders — cnbc_finance — Score: +0.17

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

Academic Footnote

Care & Cumming (2024) — algorithmic trading and crypto market quality.

Disclaimer

This is algorithmic analysis only, not financial advice.