Daily Alpha Brief — 2026-07-19 — SIDEWAYS regime across majors

Bayesian crypto brief for 2026-07-19: SIDEWAYS regime, strategy performance, weight shifts, and quant-vs-crowd sentiment across 9 symbols.

TL;DR

• Dominant regime: SIDEWAYS (0 bullish / 1 bearish of 9 symbols).
• Top signal: post_shock_reversal on ETH cut 0.315 (0.53 → 0.21).
• Shadow portfolio: $749 (-25.14%), 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 fear at 35/100; BTC dominance 58.7% signals balanced.

🌐 Market Overview

Economic (FRED):

Stablecoin dominance 11.2% (risk-off, money fleeing crypto); yield curve regime Flat.

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

Economic Calendar: Next FOMC: in 10 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 broadly bearish: 0 BULL / 1 BEAR of 9 symbols.

🔗 Correlation Signals

Stable pairs (r > 0.70): SOL/DOGE: r=0.87 ✅ | BTC/SOL: r=0.86 ✅ | ETH/SOL: r=0.85 ✅ | SOL/XRP: r=0.85 ✅ | BTC/ETH: r=0.84 ✅ | XRP/DOGE: r=0.83 ✅

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

ETH/USDT (SIDEWAYS):

post_shock_reversal is the worst performer with 7d win-rate of 16% and deeply negative Sharpe (-11.68) and pnl (-465.97), so it is cut hard toward 0.10 per rules 2-3; tsmom similarly has 0% win-rate across 6 trades with Sharpe of -10.94 and large negative pnl, so it is also cut to 0.10. bollinger shows a poor 7d win-rate of 22% with a very negative 7d Sharpe (-5.14) despite the SIDEWAYS regime favouring it — data overrides regime alignment (rule 6), so it is reduced from 0.434 to 0.32. volume_spike is the only active price-based strategy with positive 7d pnl (+284.69) and decent Sharpe (6.64), earning a modest boost to 0.55, while rsi_macd, ema_cross, walk_forward_ema, correlation_strategy, and macro_strategy all have zero trades and are held near their current weights; sentiment_strategy shows consistent 3-source coverage with 67% confluence and mild positive composite, warranting a small hold near its current level at 0.62.

DOGE/USDT (BEAR):

rsi_macd, ema_cross, bollinger, walk_forward_ema, correlation_strategy, and macro_strategy all have zero trades across both windows, so rule 1 applies and weights are held at current. volume_spike has 52 7d trades with a strong Sharpe (4.25) and positive pnl (+137) but a low win-rate (27%), which is a classic high-magnitude-few-wins profile; it earns a modest raise for positive pnl and regime-neutral nature but the sub-30% win-rate prevents a full rule-4 boost. tsmom has only 3 7d trades with 0% win-rate and a deeply negative Sharpe (-6.20) and negative pnl, triggering rules 2-3 for a cut toward 0.12, compounded by poor BEAR-regime alignment for a momentum strategy that is actively losing. post_shock_reversal has a strong 7d Sharpe (7.78) and pnl (+241) on 32 trades but the 24h window shows deterioration (20% win, -5.30 Sharpe), so a moderate raise is warranted rather than a full rule-4 boost, and it aligns with the BEAR mean-reversion favour; sentiment_strategy holds near its current elevated weight on 3-source coverage and 67% confluence with slightly mildly positive composite, but the tepid signal warrants a small trim.

SOL/USDT (SIDEWAYS):

post_shock_reversal is the standout performer with 7d win=46%, Sharpe=9.26, pnl=+199 and is well-suited to a SIDEWAYS regime as a mean-reversion strategy, earning a meaningful raise from 0.228 to 0.35; volume_spike has 7d trades=50 with positive pnl (+84) and a high Sharpe despite the alarming 24h figures (which reflect a single bad day of 0% win on 9 trades), so it gets a cautious bump to 0.50 with the SIDEWAYS regime nudge. tsmom is cut to 0.10 on thin data (7d trades=2) with 0% win and deeply negative Sharpe (-5.21) and pnl (-57), consistent with momentum struggling in a ranging market. bollinger is held slightly below its current weight despite the SIDEWAYS regime favouring it, because its single 7d trade produced a -7.22 Sharpe and negative pnl — rule 1 (thin data) prevents a large move but rule 3 (negative Sharpe) justifies a small cut; rsi_macd, ema_cross, walk_forward_ema, correlation_strategy, and macro_strategy all have zero trades and are held near their current weights per rule 1, while sentiment_strategy retains its elevated weight given 3-source coverage and 67% confluence.

📡 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: -0.50 (bearish crowd).
• Macro signal (FT/Fed/CNBC): +0.13 (bullish) — “These underperforming trades could yield big returns over next six months”.

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

📰 Today’s Key Reads

Curated from 4 sources monitored today:

⚠️ These underperforming trades could yield big returns over next six months — cnbc_finance — Score: +0.25

🟢 JPMorgan says bitcoin outlook sees ‘encouraging sign’ as Strategy boosts cash reserves — theblock — Score: +0.22

⚪ AI frenzy losing steam leaves bitcoin less volatile than South Korean stocks — coindesk — Score: -0.19

⚪ This $28 million ether market bet aims to profit from pure market chaos — coindesk — Score: -0.15

⚠️ The London IPO market isn’t as bad as it looks — ft_markets — Score: +0.13

Academic Footnote

Wen et al. (2022) — overreaction and short-term reversal in crypto.

Disclaimer

This is algorithmic analysis only, not financial advice.