Stock Dilution Tracker

Every ticker on a serious watchlist should be tagged with three fields: is an S-3 effective, what is the remaining shelf capacity, and who is the named sales agent. A stock with an empty shelf can't dilute today; a stock with $75M open on an ATM through Cantor can dilute at 9:30. This is the pre-work that turns dilution from a surprise into a scheduled event.

A low-float microcap up 40%+ over 1–5 sessions with an effective shelf is in the deal window. Investment banks pitch offerings into strength; management signs when the chart is loud enough. The trade is a starter short into the close of a screaming day, sized to survive a squeeze, exited on the 424B5 print or on a technical break. The edge is knowing the deal is more likely than the crowd thinks.

A 424B5 that prints in the after-market almost always produces a gap-down open the next session as the sales agent begins working supply. The trade is short the first bounce into the 5-minute opening range, cover into the first VWAP touch, and reassess. It is a mechanical, repeatable pattern with a defined risk (the pre-market high).

Once the ATM is visibly done — deal closes announced, volume decays, tape thins — the stock often bases and can be bought back. The tell is a company 8-K confirming completion of the offering, or a materially reduced Form 4 / Form 144 pattern from the sales agent. This is the least crowded side of the dilution trade and requires the most patience.

Shorting every microcap that rallies 30% is a broken system — plenty run without an effective shelf. Assuming a deal must price at a discount to the current bid ignores how ATMs mechanically work. Trading on a 'tip' about a pending offering is insider trading. Every playbook above starts and ends with what is on EDGAR.