Lumentum

Not all insider buys are signal. Here's how to separate informed open-market purchases from option exercises, 10b5-1 noise, and reflexive CEO PR buys.

A practical framework for figuring out which companies can pass through input costs, where the lag shows up in margins, and how to read it in filings.

Pulled guidance isn't always a panic signal. Here's how to read withdrawn forecasts, separate prudence from distress, and position before the next print.

A practical framework for sum-of-the-parts analysis: how to size a conglomerate discount, separate real mispricings from structural ones, and avoid value traps.

A framework for reading pre-announcements before earnings: why positive ones tend to underwhelm, negative ones cluster, and silence is the most useful signal of all.

Goodwill writedowns aren't just accounting noise. They're a delayed confession that an acquisition failed — and they often signal more pain ahead.