Nydar's max pain widget calculates the strike price where the most options expire worthless — a key level for expiration-week trading
Nydar's Max Pain widget calculates the options max pain strike for any US-listed stock with active options. Nydar analyses open interest across every strike price for up to 8 upcoming expirations and finds the price at which the combined value of all outstanding calls and puts would be at its minimum — the point of maximum pain for option buyers. Nydar displays the max pain strike, total call and put open interest, the put/call ratio, and a pain-by-strike bar chart.
Market makers and institutional option sellers are generally on the other side of retail option trades. The max pain theory — which Nydar visualises through its pain-by-strike chart — suggests that because these sellers have a financial incentive to keep stock prices near the strike where the most options expire worthless, stock prices tend to gravitate towards max pain as expiration approaches. Ni, Pearson, and Poteshman (2005) provided the first rigorous academic evidence for this "option pinning" effect, finding statistically significant clustering of stock prices near strikes with heavy open interest on expiration Fridays.
Academic references: Ni, S.X., Pearson, N.D. & Poteshman, A.M. (2005). "Stock Price Clustering on Option Expiration Dates." Journal of Financial Economics, 78(1), 49-87. Goyal, A. & Saretto, A. (2009). "Cross-Section of Option Returns and Volatility." Journal of Financial Economics, 94(2), 310-326. Avellaneda, M. & Lipkin, M.D. (2003). "A Market-Induced Mechanism for Stock Pinning." Quantitative Finance, 3(6), 417-425.
For every strike price on an options chain, Nydar calculates the total dollar loss that option holders would suffer if the stock closed at that price on expiration day. Calls above the stock price expire worthless. Puts below it expire worthless. The strike where these combined losses are highest for option buyers — and lowest for option sellers — is the max pain strike.
Example: If a stock has heavy call open interest at $150 and heavy put open interest at $130, the max pain strike might land around $140. At $140, calls above $140 expire worthless and puts below $140 expire worthless, minimising the total payout from option sellers.
Nydar highlights this strike in violet on the bar chart and displays it prominently at the top of the widget.
The large violet number at the top of Nydar's widget. This is the strike price where total option pain is maximised. Compare it to the current stock price shown in Nydar's chart widget — if the stock is far above max pain, there's a gravitational pull downward as expiry approaches. If it's far below, there's a pull upward.
Shown next to the max pain strike in Nydar. Max pain is calculated per expiration — a stock might have a very different max pain for this Friday compared to next month. Use Nydar's dropdown to switch between up to 8 upcoming expirations.
Nydar's horizontal bar chart shows total pain value at each strike price, centred around the max pain strike. The violet bar marks the max pain strike itself. Longer bars mean more total option value would expire worthless at that price. This gives you a visual sense of how sharply pain concentrates at one price or spreads across multiple strikes.
Call OI
Total open interest across all call strikes for the selected expiration that Nydar displays. High call OI means traders are positioned for upside. This is the aggregate number of outstanding call contracts.
Put OI
Total open interest across all put strikes. High put OI means traders are positioned for downside or hedging existing long positions. Compare to call OI for a quick read on directional sentiment.
Put/Call Ratio
Put OI divided by call OI. Above 1.0 (shown in red) means more bearish positioning. Below 1.0 (shown in green) means more bullish positioning. Extreme values in either direction can signal overcrowded trades.
Compare current price to max pain
If the stock is trading significantly above the max pain strike that Nydar calculates, consider that there is a gravitational pull lower as expiration approaches. If below, the pull is upward. The closer to expiration, the stronger this tendency becomes.
Check the put/call ratio for context
A high put/call ratio in Nydar alongside a max pain strike well above the current price can signal that fear is overdone and the stock may bounce toward max pain. The reverse — low put/call ratio with Nydar's max pain below the current price — suggests overconfidence.
Use the pain chart to identify support and resistance
Strikes with high pain values in Nydar's bar chart act as magnets. If several adjacent strikes show large bars, that zone becomes a likely range where the stock might consolidate near expiry. Isolated spikes at a single strike suggest a sharper pin.
Check multiple expirations
The nearest expiration in Nydar has the strongest gravitational effect because those options are about to settle. But looking at monthly expirations in Nydar reveals where larger institutional hedges are concentrated, which can influence price action over longer periods.
Max pain is a tendency, not a rule. Strong catalysts — earnings reports, FDA decisions, macro data releases — can push a stock well past the max pain strike that Nydar calculates. Never assume the stock must converge to max pain.
Open interest shifts throughout the week. Traders open and close positions constantly. Nydar's max pain strike on Monday may be different by Thursday as new positions are established. Refresh Nydar's widget regularly to see the latest calculation.
The gravitational effect is strongest near expiry. Max pain is most relevant in the 2-3 days before expiration when delta hedging and gamma exposure intensify. A week before expiry, the stock can trade anywhere — max pain becomes a useful reference point only as the clock runs down.
Low open interest reduces reliability. For stocks with thin options markets (low OI across strikes), Nydar's max pain calculations are less meaningful because the gravitational force is weaker. The effect is strongest on heavily-optioned large-cap names.
Nydar sources options chain data including strikes, open interest, and expiration dates from exchange-reported options feeds. Nydar calculates pain values by summing the dollar loss for all call and put holders at each strike if the stock were to expire at that price.
Nydar's data is available for US-listed equities with active options markets. Crypto pairs and symbols without listed options will default to AAPL.
| Feature | Max Pain | GEX | Options Chain | Options Flow |
|---|---|---|---|---|
| Primary Focus | Expiry price magnet | Dealer gamma hedging | Full options data | Unusual options activity |
| Key Output | Max pain strike price | Net gamma exposure ($) | Strikes, OI, greeks | Large order alerts |
| Time Relevance | Strongest at expiry | Intraday to weekly | Current snapshot | Real-time trades |
| Academic Basis | Option pinning (Ni et al.) | Delta hedging theory | Black-Scholes model | Information asymmetry |
| Best Used For | Expiration week targets | Volatility regime | Position research | Smart money tracking |
| Visualisation | Pain-by-strike bars | Gamma profile chart | Strike-level table | Trade-by-trade feed |
| Cross-Reference With | GEX, Options Chain | Max Pain, Chart | Max Pain, GEX | Max Pain, Chart |
Last reviewed: March 2026