Event-driven trading is built on a simple premise: stocks move on information asymmetry. The trader who knows a catalyst is coming — a PDUFA approval, a government contract award, an insider buying cluster — before the market prices it in captures most of the move. These are the tools that surface that information in real time.
Most retail trading strategies chase price action after the move has already begun. Event-driven trading is fundamentally different: you identify the specific information event that will drive a price move, position before it occurs, and exit when the information becomes widely known. The edge isn't analytical sophistication — it's information speed.
There are five major categories of market-moving events in small and mid-cap equities:
Every event-driven trader needs a forward-looking catalyst calendar maintained for every company in their universe. In biotech, that calendar is structured and predictable: PDUFA dates are set by the FDA 60 days after NDA/BLA acceptance; advisory committee meetings are scheduled weeks in advance; trial readouts are announced by protocol with estimated completion dates.
The traders who make the most money on biotech binary events are usually positioned 30–60 days before the market starts building in the catalyst premium. By the time PDUFA date is being discussed on Reddit, the easy money is already made.
Maintains the most comprehensive PDUFA date calendar for small and mid-cap biotech companies, with proprietary catalyst scoring that estimates binary outcome probabilities based on FDA precedent, clinical trial data, and company-specific factors. Covers IND filings, Phase 2/3 trial readouts, Breakthrough Therapy designations, and complete response letters — the full catalyst lifecycle from early-stage development through NDA decision.
For event-driven biotech traders: knowing the full catalyst calendar 90 days out gives you time to research the binary thesis thoroughly before the implied volatility premium prices in.
Access the Catalyst Calendar →SEC filings are public the moment EDGAR accepts them — but most traders don't see them for hours, days, or weeks. The reason: retail traders rely on news aggregators, financial media, and stock screeners that batch-process filings rather than monitoring them in real time. By the time a filing makes headlines, the price has already reacted.
The most critical filings for event-driven traders to monitor in real time:
Monitors EDGAR continuously and processes new filings the moment they're accepted — no batch delays. DilutionWatch scores each filing for dilution risk and delivers alerts to your watchlist tickers immediately. Tracks the full dilution lifecycle: shelf registration → prospectus supplement → ATM agreement → actual issuance, with running share count and dilution impact estimates at each stage.
Start Real-Time Filing Monitoring →Federal contract awards are publicly disclosed on SAM.gov and USASpending.gov the day they're awarded. For publicly traded defense contractors, government IT services companies, and federal healthcare services providers, contract awards — and especially IDIQ task order expansions — are direct revenue signals that often precede guidance revisions by months.
The event-driven opportunity in government contracting data comes from the gap between when a contract is awarded and when it shows up in a company's earnings call guidance. Companies often don't update guidance between quarters even when significant contracts have been awarded.
Monitors SAM.gov and USASpending.gov for contract awards, modifications, and IDIQ ceiling expansions for publicly traded companies. Filters by ticker, agency, contract type, and dollar threshold so you see only the awards that are material to your holdings. Delivers alerts when watched companies receive significant new awards or ceiling expansions before they appear in any earnings guidance.
Track Government Contracts →The most reliable leading indicators in event-driven trading are the disclosures that sophisticated investors are legally required to make. Congressional trading disclosures must be filed within 45 days of a trade. Form 4 insider transactions must be filed within 2 business days. These create a constant stream of disclosed positioning that precedes price moves.
Aggregates all mandatory smart-money disclosures — congressional trading, Form 4 insider buys/sells, 13F institutional positioning, unusual options sweeps, and dark pool prints — into a single real-time wire. The Whisper Index provides sentiment scoring across financial social media, identifying when retail conviction is building around specific event theses.
View Smart-Money Wire →TraderTools Pro bundles every tool in this guide — DilutionWatch, BiotechSigns, StonkWhisper, ChainSifter, and Contract Trader — at $99/mo locked permanently for Founding Members.
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