Definition. Options Net Premium Strike Heatmap visualizes the net cumulated premium flows of options traders across strike prices and time, offering insight into market positioning and sentiment.

Technical. Daily net premiums (premium paid as a buyer minus premium received as a seller) are aggregated across strike buckets and displayed as a heatmap overlaid with the underlying asset's spot price. Blue and green tones indicate net buying activity (net call buyers above spot, net put buyers below spot), red tones indicate net selling activity (net call sellers above spot, net put sellers below spot).

Interpretation. Examining the distribution of net premium across strikes can identify price levels that may act as magnets, resistance zones, or areas of heightened risk. Clusters of net call buying above the current spot may signal anticipated upside, whereas net selling at higher strikes may suggest perceived resistance.