Daily Alpha Brief — 2026-10-25 — SIDEWAYS regime across majors

Bayesian crypto brief for 2026-10-25: 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: walk_forward_ema on WIF raised 0.269 (0.33 → 0.60).
• Shadow portfolio: $711 (-28.90%), 2 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 45/100; BTC dominance 60.1% signals balanced.

🌐 Market Overview

Economic (FRED):

Stablecoin dominance 9.4% (risk-on); yield curve regime Flat.

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

Economic Calendar: Next FOMC: in 3 days | Next CPI: in 19 days | position-size modifier 0.90×.

📊 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/DOGE: r=0.94 ✅ | SOL/DOGE: r=0.94 ✅ | DOGE/SUI: r=0.93 ✅ | SOL/SUI: r=0.93 ✅ | DOGE/SUI: r=0.93 ✅ | SOL/SUI: r=0.93 ✅

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):

Most strategies have zero trades in both windows, so rule 1 (low-sample guard) applies and their weights are held within ±0.05 of current; bollinger gets a small +0.02 nudge for SIDEWAYS regime alignment. volume_spike has 63 7d trades but only 27% win-rate and negative 24h metrics — rule 2 fires (7d win-rate < 30%), so I cut it from 0.590 toward 0.52 (a measured reduction given the contradictory positive 7d Sharpe of 2.94, which is likely distorted by outliers given the poor win-rate). walk_forward_ema shows strong 7d Sharpe (7.28) and positive pnl (238.78) across 9 trades — borderline rule 4 territory — so I raise it modestly to 0.40, tempered by the thin sample and the 24h single-trade outlier driving an unreliable Sharpe. post_shock_reversal has 7d Sharpe of -3.50 and negative pnl with only 4 trades, triggering rule 3 with a small cut to 0.14; sentiment_strategy is held near current given sparse coverage (2 sources) and weak 50% confluence.

BTC/USDT (SIDEWAYS):

ema_cross is the clearest cut: 7d win-rate of 23% with a deeply negative Sharpe of -9.65 and -180.88 pnl triggers rules 2-3 hard, and its momentum profile is misaligned with the SIDEWAYS regime, so it is reduced to near-floor. rsi_macd also has only 2 7d trades (rule 1 thin-data guard) but both wins are zero and Sharpe is -6.02, so a modest downward nudge from its already-low 0.20 is warranted within the +/-0.05 thin-data bound. bollinger is the natural SIDEWAYS beneficiary but its 7d win-rate of 28% with negative Sharpe (-1.21) and negative pnl contradicts the regime prior — rule 6 applies, so I trust the data and reduce it modestly rather than raise it. volume_spike is the standout price-strategy: 7d win 35%, Sharpe 1.99, pnl +64.35 with 63 trades is statistically meaningful and earns a raise per rule 4 partial criteria and the SIDEWAYS volume bump. post_shock_reversal shows a positive 7d Sharpe (3.53) and positive pnl (+126) with adequate trades, fitting the mean-reversion SIDEWAYS environment, so it receives a small raise. walk_forward_ema has only 4 7d trades with -4.82 Sharpe, triggering rule 1 (near-hold) plus a small downward nudge for the negative Sharpe. tsmom has zero trades across both windows, so it is held near its current weight with a marginal trim for momentum mis-alignment in SIDEWAYS. sentiment_strategy shows 0% confluence over 7d and a near-zero composite, indicating contradictory sources, so the weight is reduced from 0.464 per the low-confluence guidance. correlation_strategy and macro_strategy are both inactive (zero trades/signals both windows) and are held at their current weights with negligible adjustment.

SOL/USDT (BULL):

rsi_macd has a 7d win-rate of 33% and negative 7d Sharpe (-1.95) with negative pnl, so it is cut from 0.416 toward 0.30 per rules 2-3 despite the BULL regime (conflict rule 6: momentum losing money in a bull). bollinger shows a surprisingly positive 7d Sharpe (4.77) and pnl (+202) in a BULL regime — data wins over the regime prior — so it is held near current but trimmed slightly given the band-walk risk and the very poor 24h win-rate (14%) which raises short-term concern; net 0.50. ema_cross has a 7d win-rate of only 34% but a positive Sharpe (1.40) and positive pnl, so it earns a small BULL-regime nudge up from 0.357 to 0.40. volume_spike is the clearest standout with 38% win-rate but a strong 7d Sharpe (3.44) and solid pnl (+165), earning a modest raise to 0.60. tsmom and correlation_strategy have zero trades on both windows (rule 1: hold within ±0.05 of current). post_shock_reversal has a 7d win-rate of 31% with a positive Sharpe (2.45) but the mean-reversion style is contra-regime in a BULL and the sub-30% win-rate is borderline, so a small cut to 0.22 is applied. walk_forward_ema has positive 7d pnl and Sharpe (2.93) with 38% win-rate — not rule-4 threshold but decent — small trim for low win-rate, held near 0.46. sentiment_strategy shows weak 7d confluence (33%) and a near-zero composite, warranting a small downward nudge to 0.44. macro_strategy has no signal data; hold near current at 0.27 per rule 1.

📡 Signal Outlook

💼 Shadow Portfolio

Open positions:

$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): -0.05 (neutral) — “IMF warns bond yields could see a ‘disorderly’ spike as debt, inflation risks worsen”.

Most-talked alt: SOL/USDT at -0.39 (bearish crowd lean).

📰 Today’s Key Reads

Curated from 3 sources monitored today:

⚠️ Would you take out a mortgage backed by bitcoin? — ft_markets — Score: +0.54

🟢 Singapore, Malaysia and Thailand central banks expand cross-border stablecoin initiative involving Ripple, Visa and Mastercard — theblock — Score: +0.32

🟢 Franklin Templeton adds $150 million in fund shares to XRP Ledger, all in one wallet — coindesk — Score: +0.30

🔴 Crypto longs lose $404 million in four hours as bitcoin briefly slips below $80,000 — theblock — Score: -0.20

⚠️ Gold drops below $4,000 as ‘haven’ asset joins market sell-off — ft_markets — Score: -0.12

Academic Footnote

Miralles-Quirós (2022) — post-shock reversals in digital assets.

Disclaimer

This is algorithmic analysis only, not financial advice.