Learn
Desk-level explainers on options flow, dealer gamma, and volatility, written by a 10-year market desk veteran who trades these mechanics live. No hype, no trading-101, not advice.
Research standards
What separates accountable research from retail alerts.
- What a Real Audited Options Track Record Looks LikeWhat separates a verifiable options track record from a marketed one: public timestamps before each outcome, per-contract math, and results an outsider can reconstruct.
- Sell-Side vs Retail Trading Research: The Real DifferenceSell-side research is accountable, methodology-transparent analysis built for professionals. Retail trading research is engagement-driven alerts. The real difference is who is on the hook when the thesis is wrong.
Market mechanics
How dealer hedging and gamma actually move price.
- Gamma Flip: What It Is and Why Dealers Defend the LevelThe gamma flip, or zero-gamma level, is where dealer gamma changes sign and price behaviour inverts. How the level works and why a screenshot of it is not an edge.
- Dealer Hedging Explained: How Market-Maker Flows Move PriceHow market-maker delta hedging forces dealers to trade the underlying as spot moves, and why that rule-bound flow leaves a repeatable, readable footprint in the intraday tape.
- 0DTE Gamma: Why Same-Day Options Whip the Tape0DTE gamma is the dealer-hedging force behind violent same-day swings in index options. How concentrated same-day gamma whips the tape and then decays into the close.
- Gamma Exposure (GEX): How to Use It and Where It BreaksGamma exposure (GEX) explained by a sell-side desk: how a gamma map is built, the dealer-long-gamma assumption it rests on, and the failure modes where it breaks.
- Fixed-Strike Volatility: Reading the Vol Surface Like a DeskWhy a desk reads fixed-strike volatility, not just at-the-money or sticky-delta vol, to see dealer positioning. The vol surface, fixed vs floating strike, and what the moves mean.
Reading the flow
How to read options flow without getting faked out.
- Unusual Options Activity, Explained by a Desk That Trades ItA desk veteran's clean definition of unusual options activity, plus the taxonomy that matters: sweeps, blocks, and splits, and how a professional actually reads each one.
- Is Unusual Options Activity Reliable? An Honest AnswerA desk veteran's honest take on whether unusual options activity is reliable: why most retail feeds are noise and what actually separates signal from it.
- How to Read Options Flow Data Without Getting Faked OutHow to read options flow like a desk: opening versus closing, buyer versus seller, hedge versus directional, and the reads retail flow tools get wrong.
- Options Volume vs Open Interest: What Each Actually Tells YouOptions volume vs open interest, read by a sell-side desk: what each measures, why open interest reveals commitment while volume reveals churn, and how to use them together.
Risk
The discipline behind a survivable options book.