Thesis
The news-sentiment strategy runs a simple, intuitive premise: buy on positive recent news sentiment, exit on negative. It fishes in a 24-name large-cap pond spanning tech (AAPL, MSFT, GOOGL, NVDA), financials (JPM, BAC, V, MA), healthcare (JNJ, UNH, PFE, ABBV), and staples/industrials (PG, KO, WMT, COST, CAT, HON, XOM, CVX). The universe is liquid and defensive, which limits how badly a sentiment misread can hurt — but also caps the upside from any single euphoric headline.
Recent Activity
The strategy is live and its recent posture is notably passive. Across six scheduled runs from July 24 to July 31, every single one reported 0 executed, 0 rejected — no new signals cleared the bar. Cash has been pinned at $990.06 while total portfolio value drifted with the market, from $9,968.65 on July 24 up to $10,348.98 on July 30 and back to $10,274.88 on July 31. That movement is mark-to-market on existing holdings, not fresh conviction.
The last actual executions were a cluster of buys earlier in the summer: AAPL (6 sh @ $312.06) on May 31, MSFT (4 @ $428.23) on June 3, BAC (35 @ $55.93) on June 12, UNH (4 @ $402.85) on June 18, and GOOGL (5 @ $360.40) on July 1. Since then, nothing. The book is roughly 90% invested and sentiment hasn't flipped hard enough to trigger an exit.
Backtest & Validation
Here is where balance is required. The headline backtest looks calm to the point of inert: +0.19% total return over 451 days, a 0.1% CAGR, Sharpe of 0.74, and a trivial 0.05% max drawdown on just 2 trades. Turnover was 36.5% and fees a token $2. The low drawdown is genuinely attractive — this strategy did not blow up — but a 0.1% annualized return barely distinguishes it from cash.
Formal validation failed. The walk-forward split into four folds is the tell: folds 1, 2, and 3 produced zero trades and zero return — the model simply found nothing to do for most of the tested history. Only fold 4 (Dec 2025–May 2026) fired, delivering the entire 0.19% return and a 1.5 out-of-sample Sharpe from 2 trades. So one positive fold out of four, and the whole track record hangs on a two-trade sample.
The deflated statistics are mixed: a Probabilistic Sharpe Ratio of 0.923 is encouraging, but the Deflated Sharpe of 0.551 — after adjusting for 6 trials — sits right at the knife's edge. Win rate reads 0%, consistent with positions still being held open rather than closed at a profit.
Verdict
News-sentiment is safe but unproven. Its strengths are real: minimal drawdown, disciplined inactivity, and a clean out-of-sample fold. But the evidence base is dangerously thin — two backtest trades, three dead folds, and a failed validation gate. Before trusting it with size, we need more triggered signals across regimes. For now, treat it as a promising sketch, not a finished strategy.