AI Gamma SPX Regime Status and Metrics by aigamma

AI Gamma SPX Regime Status and Metrics surfaces live SPX derivative metrics from aigamma.com in a 320-pixel popup and reflects the current dealer gamma regime on the toolbar icon at a glance. It is a companion surface to the full aigamma.com dashboard, intended for options traders, volatility analysts, and anyone tracking SPX derivatives positioning in real time.

Toolbar icon states:
- Green plus: POSITIVE gamma regime. Dealers are net long gamma. Market-maker delta-hedging flow is flow-dampening.
- Red minus: NEGATIVE gamma regime. Dealers are net short gamma. Market-maker delta-hedging flow is flow-amplifying.
- Neutral mark: outside US equity market hours or when the snapshot endpoint is unreachable.

Popup metrics:
- Catalyst banner. Dynamic banner that appears when high-impact macro events or Top-100 options-volume earnings releases fall within the next 72 hours. Red appears for catalysts within the next 24 hours, orange for catalysts 25 to 48 hours out, and yellow for catalysts 49 to 72 hours out. The banner does not render during quiet windows with no near-term catalysts.
- SPX Reference (15min delayed). SPX cash index reference price captured at the most recent intraday ingest instant.
- Overnight Align. Alignment score in [-3, +3] indicating whether the put wall, vol flip, and call wall each moved in the same direction against yesterday's close.
- Gamma Index. Bounded oscillator in [-10, +10] equal to 10 times the difference between ATM call and put GEX divided by their sum, indicating ATM book skew.
- Distance from Risk Off. SPX Reference minus Vol Flip. Positive means dealers are long gamma (dampening). Negative means dealers are short gamma (amplifying).
- Vol Flip. Strike where the signed dealer gamma profile crosses zero. Above this level is the positive-gamma regime. Below is the negative-gamma regime.
- Term Structure. Contango or backwardation label derived from the VIX term-structure slope. Contango is the empirically-typical state in calm regimes; backwardation signals urgent near-term volatility pricing.
- VRP. Volatility Risk Premium. 30-day constant-maturity IV minus 20-day Yang-Zhang realized volatility. End-of-day value; lags intraday spot by up to one trading day.
- IV Rank. Current 30-day constant-maturity IV percentile position in its trailing 252-trading-day window.
- Put Wall. Strike with the largest concentration of put-side open-interest gamma. Often acts as downside support.
- Call Wall. Strike with the largest concentration of call-side open-interest gamma. Often acts as upside resistance.
- ATM IV. At-the-money implied volatility on the nearest 30-DTE monthly SPX expiration, in annualized percent.
- P/C Volume. Total SPX put volume divided by total SPX call volume across all expirations for the session. Higher values indicate more defensive flow.
- P/C OI. Total SPX put open interest divided by total SPX call open interest across all expirations. Higher values indicate a more put-heavy positioning skew at the structural level.

All metrics include their day-over-day change in parentheses where applicable. The popup footer shows the timestamp of the most recent snapshot in the user's local time zone equivalent of US Eastern.

Update cadence:
The extension fetches a single JSON snapshot from https://aigamma.com/api/snapshot.json during US equity market hours, Monday through Friday 9:30 AM to 4:00 PM Eastern, with DST-aware scheduling. Outside market hours the background worker no-ops because the dealer positioning regime cannot change while the SPX options market is closed. Market data is delayed approximately 15 minutes from real-time.

Permissions posture:
The extension declares only the alarms permission, used by the background service worker to schedule the periodic snapshot fetch. It does not declare host_permissions, tabs, activeTab, storage, cookies, scripting, or webRequest. It has no content scripts and cannot read or modify any web page the user visits. It collects no personal information, stores no data locally or remotely, and includes no third-party SDKs, no usage analytics or telemetry, and no advertising identifiers. The full privacy policy is available at https://aigamma.com/extension-privacy.

License and source:
Free and open source under the MIT license. Source code and issue tracker are at https://github.com/aigamma/aigamma.com.

Disclaimer:
All metrics displayed in this extension are derived quantitative statistics computed from SPX options market data. They are presented as mathematics. Interpretation, application, and any investment decisions made in connection with them are entirely the responsibility of the user. Neither this extension nor aigamma.com makes any claim, forecast, recommendation, or prediction about future market direction, price levels, volatility, or the profitability of any trading strategy. Nothing displayed here constitutes investment advice, a recommendation to buy or sell any security, or a representation that any depicted level, metric, or regime will persist or recur. The extension is provided for informational and educational purposes only. Past market behavior does not guarantee future market behavior. Users are solely responsible for their own due diligence and for consulting qualified financial, tax, or legal professionals regarding their individual circumstances.