Get the daily brief

Factor Watch distills each US session into one short email at the close: which S&P 500 factors moved more than their own history says they should, who leads the tape, and whether leadership just rotated — the same numbers as the live dashboard, in your inbox.

What’s inside every issue

• Unusual moves — any factor beyond 2σ of its trailing-year norm, flagged and sized
• The day’s factor chart, plus 20-day leadership and rotation flags (flips, quartile jumps)
• Breadth: share of the index above its 50- and 200-day averages
• The factor table — momentum, value, quality, size, low vol, high beta, dividend yield vs the S&P
• Rebalance days: what each factor book added and dropped, with turnover
• Basket movers with their theses, and the analyst-revisions read
• Seasonality context for the current month, when it matters

Subscribing also gets you the Saturday week-in-review — the week’s factor table, every rebalance, baskets, and the analyst tape day by day — and rare big-move alerts when a factor crosses 3σ intraday (at most one per session, muteable separately from the brief).

Delivery is double opt-in: you confirm by email before anything is sent, and every issue carries a one-click unsubscribe plus a manage link for your subscription. Construction rules for all of it are public on the methodology page. Prefer feeds? The same briefs are published to an RSS feed and the web archive.