A backtest can look flawless and still be untradeable. I've watched rules with clean equity curves that assumed every signal filled at the closing print fall apart the moment real…
You run a factor screen at the end of August, and the ten names at the top look familiar. You run it again four weeks later. The same companies are…
A backtest hands you a clean-looking number. The strategy's average edge is 0.4% a week, the confidence interval sits comfortably away from zero, and the significance test says a result…
Two accounts finish the year at the same value, built from the same set of returns. One you could have held without much stress. The other spent months trading below…
NTLA is back near the top of the trending lists this week, and every time a ticker like this reappears it is worth pulling the chart that made it interesting…
Pull up two market data feeds on the same stock at the same second and you'll often see them disagree. One shows 1,200 shares offered at 48.75. The other shows…
DSGX is back among the day's big gainers this week, helped by a higher analyst price target, so it's worth pulling up a much older chart. Back in late 1999,…
Two traders run what they call the same momentum screen on Monday morning. Both rank US equities by six-month price change, both take the top twenty, and both trust the…
An index future ticks higher on a burst of buying. A beat later, the best offer on one of its larger constituents lifts by a couple of cents, and the…
A company reports earnings after the close, the print lands a little ahead of estimates, and by the time the stock reopens it's trading four percent higher. Stare at that…