Strike Migration Tracker
Detect OI and flow migration intraday and map the next likely magnet zones
Flow CentroidMagnet RotationMigration Heatmap
Filter Stack
Symbol
NIFTY
Expiry
Date
ATM Anchor
Auto ATM
Follow latest spot
Strike Window
+/- 10 strikes
IV Shock
Live Snapshot Context
Spot-
Lot Size (Charm only)50
Snapshots0
Backtest
Live Updates
Desk Snapshot
Current Desk State
Monitoring
Waiting for enough live structure to classify state quality.
Data Quality
11
Fragile confidence
Snapshot Age
-
No timestamp available from the latest option-chain snapshot.
Snapshot Cadence
-
Median spacing between visible snapshots
Strike Coverage
0%
Selected strikes inside active chain
Key Levels Board And Change Tape
| Level | Value | Gap | Gap % | Interpretation | Action Cue |
|---|
Spot Change: -
Waiting for another snapshot to compute change.
No option-chain snapshots were available for the current selection.
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Understanding Strike Migration Tracker
This tool is built for one of the most practical intraday questions in options trading: is the structure staying where it opened, or is it migrating to new strikes? It tracks where modeled flow concentration and visible OI are moving through the session, then highlights likely new magnet zones. It is intentionally heuristic. There is no exchange-defined 'magnet' metric, so the value comes from watching concentration move rather than treating the number as a certainty.
Core Ideas
Magnet Shift
If the strongest flow concentration migrates toward spot, intraday decision points can shift much faster than static pre-open levels suggest.Centroid Tracking
Flow centroid and OI centroid separate where the inventory sits from where the pressure is actually building.Structure Migration
Fresh concentration changes often matter more than absolute OI when traders are rolling, closing, or chasing new strikes.How To Read The Charts
Migration Heatmap
What it shows: How strike-level flow share changes across intraday snapshots in the visible strike window.
How to use it: Look for concentration that persists and moves toward spot. Persistent migration is more actionable than one isolated bright square.
Watch for: A spike that appears in only one snapshot can be noise from a temporary trade or a stale IV input rather than a true structural migration.
Centroid and Magnet Drift
What it shows: The path of spot, the OI centroid, the flow centroid, and the current magnet strike through time.
How to use it: If the flow centroid leads the OI centroid, fresh risk is often moving before the slower open-interest picture fully reflects it.
Watch for: Spot can overshoot a magnet in fast markets. Use this chart as a structural map, not a pinning guarantee.
Latest Migration Table
What it shows: Which strikes gained or lost the most share and net flow in the latest visible transition.
How to use it: Focus on the top delta-share and delta-flow strikes near current spot. That is usually where the next tactical decision zone forms.
Watch for: A large migration at distant strikes can matter less than a smaller migration close to spot if the latter is more tradeable today.
Execution Playbook
Use migration after the open
The first useful read is usually whether new concentration is building back near spot or whether the opening structure is being abandoned.
Compare OI and flow centroids
If flow moves first while OI stays behind, the market may be repricing faster than static OI tables suggest. That often improves the value of intraday structure tools.
Treat magnets as battle zones
A migrating magnet is best used as a likely engagement area, not as a precise pin. Watch acceptance, tape quality, and volume around it.
Re-validate into expiry
Late-session or expiry rolls can shift the map quickly. A valid noon magnet can become irrelevant by the close if the chain rotates hard.
How Desks Use These Charts In Live Execution
Watch early-session migration
The first high-signal read is whether concentration rotates back near spot or remains anchored at opening extremes.
Compare flow and OI centroids
If flow centroid moves before OI centroid, fresh pressure is shifting faster than static inventory tables imply.
Treat magnet as zone, not pin
Use magnet as a likely engagement area. Demand acceptance and liquidity confirmation around the zone.
Re-validate into close/expiry
Late rolls can rotate magnets quickly. Noon structure is not guaranteed to hold into settlement windows.
Industry Display Patterns Used Here
Concentration Migration View
Intraday OI/flow tools typically use heatmaps for migration because persistence over multiple snapshots matters more than a single spike.
Centroid Overlay
Showing spot, flow centroid, and OI centroid in one plot helps separate fresh pressure from slower inventory movement.
Magnet Rotation Watch
Desk workflows track whether magnet zones rotate toward spot. Rapid rotation often signals that static pre-open levels are losing relevance.
Assumptions And Caveats
Research References
SSRN: Options Market Makers
Helpful for understanding why inventory rebalancing and market-maker positioning can matter for near-term price behavior.
SSRN: Option Expected Hedging Demand
Supports using option information to estimate where hedging demand can become more relevant to underlying price action.
Cboe: Evaluating the Market Impact of SPX 0DTE Options
A useful reminder that net positioning is what matters, which is exactly why migration should focus on structural concentration rather than gross volume alone.
Strategy intelligence
Continue your market analysis
Related strategy modules to validate the signal from another angle.
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