WhaleQuant.io

MRK Options Chain — Open Interest, Implied Volatility, Max Pain & Gamma Exposure

Analyze the complete MRK options chain including strike-level open interest, real-time implied volatility (IV), max pain levels, gamma exposure, dealer positioning, and options flow trends. This dashboard provides data-driven insights for traders building directional or hedging strategies around MRK.

Latest Data: 2025-12-23 (EDT)
Max Pain Price
105
Exp: 2025-12-26
Gamma Flip
95.02
Gamma Flip (≈60 days)
Put/Call OI Ratio
0.451
Shows put vs call positioning
IV Skew
-0.91
Put–call IV difference
Max Pain Price Volatility
σ = 5.71
medium volatility

Dealer–Gamma Regime

A combined view of MRK’s total gamma exposure (GEX) and Dealer Position Index (DPI). This helps identify whether dealer hedging flows support mean reversion or trend continuation in the current options market.

Overall Market Regime
Mean Reversion Zone
Long Gamma · Strong Net Long Options · Low Volatility
Low Volatility Mean Reversion Bias DPI Trend: neutral

Gamma Exposure
Total GEX
121.75M
Gamma Regime
Long Gamma
Flip Threshold: 96

In a long gamma regime, dealers hedge against price moves, strengthening mean reversion and suppressing volatility.

Dealer Position Index (DPI)
Current DPI
0.881
Dealer Positioning
Strong Net Long Options
Trend Label: neutral

A Strong Net Long Options profile indicates how dealers hedge daily flows, influencing whether trends extend or revert.


Market Behavior (Gamma Flip–Based)

Price moves are likely to stay range-bound.

The short-term gamma flip is near 95.95 , with intermediate positioning around 95.02 . The mid-term gamma flip remains near 93.74.


Combined Interpretation

With Long Gamma and a neutral DPI trend , the current setup favors Mean Reversion Zone .

Dealer hedging flows interact with gamma positioning to form short-term volatility regimes. Stronger directional movement is more likely when gamma is short or unstable.

Volatility Environment
Low Volatility
Trend vs Mean Reversion
Mean Reversion Bias
Dealer Hedging Behavior
Strong Net Long Options

Options-Based Market Outlook & Short-Term Sentiment for MRK • As of 2025-12-23
Neutral Outlook (Confidence: 85%)

The options structure reflects a high-confidence neutral environment. Dealer positioning and volatility suppression suggest a stable range-bound setup rather than a directional move. A strong confidence score reflects high directional consensus—or, in the case of neutral bias, a stable volatility regime.


Put-Side Positioning Insight
On the put side, the bearish positioning looks mainly like hedging. This reflects caution and short-term protection rather than a true bearish call. Confidence: 100%


Key Price Levels: Support, Resistance & Pivot for MRK
The support levels for MRK are at 104.51, 103.72, and 101.85, while the resistance levels are at 105.57, 106.36, and 108.23. The pivot point, a key reference price for traders, is at 105.00.

Important intraday and swing-trading price levels derived from max pain, open interest distribution, and gamma positioning. These price levels are derived from Max Pain analysis, gamma exposure trends, and open interest dynamics, which are crucial factors for assessing market sentiment and potential price movements. Traders can use the support and resistance levels to identify key price zones for entry or exit points, while the pivot point serves as an important reference for gauging trend direction.


Option-Implied Price Range (DTE: 3)
Based on the latest options positioning (DTE 3), the ATM straddle implies a standardized 1.10% 1-day move.
The expected range for the next 3 days is 101.27 106.00 , corresponding to +0.92% / -3.59% .

Bullish flow suggests upside interest toward 106.27 (1.17% above spot).

Bearish positioning points to downside pressure toward 98.77 (5.97% below spot).

Options flow strength: 0.65 (0–1 scale).

ATM Strike: 105.00, Call: 0.81, Put: 1.19, Straddle Cost: 2.00.

Estimated using ATM implied volatility, OTM option flow, and dealer hedging conditions to capture the market-implied price range.

📘 Show Options Market Insight

1. Core Volatility Signal (1.10% Standardized 1-Day Move)

“The ATM straddle implies a standardized 1-day move of 1.10%.”

This means:

  • Implied volatility is within normal range.
  • Price movement expectations are typical for MRK.
  • The market is not signaling unusually high risk.

📌 Plain interpretation: Normal volatility — nothing unusual is being priced.

2. Expected Price Range (Next 3 Days)

The options market is pricing the following risk range:
101.27 – 106.00

Upper: +0.92%  •  Lower: -3.59%

🔻 Bearish Skew — downside risk exceeds upside potential.

3. Bullish Flow vs Bearish Flow

▶ Bullish Flow

Bullish flow is limited, with no strong upside clustering. Option markets show only mild or passive upside interest.

▶ Bearish Flow

Downside pressure clusters near 98.77 (5.97% below spot).
This is a downside “magnet zone” where put demand concentrates.

4. Flow Strength: 0.65

Flow strength is moderate to strong, suggesting that today's positioning carries informational value.

5. ATM Straddle Cost

The ATM straddle costs 2.00 (1.91% of spot).

Traders are pricing elevated volatility, likely due to upcoming catalysts or uncertainty.

🔥 Professional Summary

1️⃣ The options market assigns greater weight to downside risk.
2️⃣ Implied volatility is within normal range for near-term movement.
3️⃣ Put activity dominates — bearish positioning carries more weight.
4️⃣ FlowStrength 0.65 supports meaningful conviction behind today's positioning.

⭐ One-sentence takeaway: The options market is pricing elevated downside risk for MRK.

The insights are generated by an AI-driven options analysis model. We strongly recommend interpreting the data in the context of your own judgment and market understanding.

DPI Trend Index

Dealer Position Index (DPI) tracks how options dealers are positioned. Rising DPI → dealers long options (mean reversion). Falling DPI → dealers short options (trend amplification).
DPI does not predict direction. It only answers one question: once price moves, will the market reinforce that move? DPI reflects the direction and strength of dealer gamma exposure — not a bullish or bearish call.

Latest Trend Interpretation:

Neutral consolidation, trend and momentum are indistinct. From the current DPI structure, dealers appear largely neutral, suggesting limited willingness to reinforce directional price moves.

Gamma Exposure & Expiry Risk Zones

Gamma Exposure (GEX) defines how option dealer hedging interacts with price moves. Large expiries can sharply alter hedging pressure and trigger volatility shifts.

Market GEX vs Price History

Aggregate gamma exposure plotted with underlying price. Sharp GEX declines or flip-zone tests often precede increased volatility.

GEX Danger Zone Overview
Symbol: MRK • Snapshot: 2025-12-23
Total GEX: 121.75M (Regime: Long Gamma (Mean Reversion / Low Volatility), Flip = 116.79M)
Max Danger Expiry: 2026-01-16 (DTE=24)
Expiry GEX: 40.13M (Contribution=33.0%)
Post-Expiry GEX: 81.62M (Regime: Gamma Flip Zone (High Trend Probability))
⚠ This expiry is CRITICAL: removal may push GEX into Flip Zone or weaken gamma support sharply.
Expiry DTE GEX Contrib % Post-Expiry GEX Post Regime Tag
2026-01-16 24 40.13M 33.0% 81.62M Gamma Flip Zone (High Trend Probability) Critical
2026-04-17 115 18.81M 15.4% 102.94M Gamma Flip Zone (High Trend Probability) Critical
2025-12-26 3 16.07M 13.2% 105.68M Gamma Flip Zone (High Trend Probability) Critical
2026-03-20 87 11.4M 9.4% 110.35M Gamma Flip Zone (High Trend Probability) Critical
2026-02-20 59 7.35M 6.0% 114.4M Gamma Flip Zone (High Trend Probability) Critical
2026-06-18 177 6.54M 5.4% 115.21M Gamma Flip Zone (High Trend Probability) Critical
2027-01-15 388 5.08M 4.2% 116.67M Gamma Flip Zone (High Trend Probability) Critical
2026-01-02 10 4.83M 4.0% 116.92M Long Gamma (Mean Reversion / Low Volatility)
2026-09-18 269 3.86M 3.2% 117.89M Long Gamma (Mean Reversion / Low Volatility)
2027-06-17 541 1.71M 1.4% 120.04M Long Gamma (Mean Reversion / Low Volatility)
2026-01-09 17 1.5M 1.2% 120.25M Long Gamma (Mean Reversion / Low Volatility)
2026-12-18 360 1.31M 1.1% 120.44M Long Gamma (Mean Reversion / Low Volatility)
2026-01-23 31 1.29M 1.1% 120.46M Long Gamma (Mean Reversion / Low Volatility)
2027-12-17 724 749.83K 0.6% 121M Long Gamma (Mean Reversion / Low Volatility)
2028-01-21 759 462.74K 0.4% 121.29M Long Gamma (Mean Reversion / Low Volatility)
2026-07-17 206 381.62K 0.3% 121.37M Long Gamma (Mean Reversion / Low Volatility)
2026-01-30 38 281.34K 0.2% 121.47M Long Gamma (Mean Reversion / Low Volatility)

Vanna Exposure & Risk Zone

Vanna measures how delta changes when implied volatility shifts. Heavy negative Vanna clusters can amplify volatility during IV shocks.

Current Vanna Exposure Overview
Symbol: MRK • Snapshot: 2025-12-23
Total Vanna
-12.25M
Net delta–vol sensitivity
Vanna Regime
Negative Vanna (Trend Amplifying)
Sensitivity to IV shocks
Max Danger Expiry
2026-01-16 (DTE 24)
Contribution: 31.7%
Large negative Vanna clusters increase hedging pressure during volatility spikes, amplifying directional trends.
Vanna Danger Zone Details
Symbol: MRK • Snapshot: 2025-12-23
Total Vanna: -12.25M ( Negative Vanna )
Max Danger Expiry: 2026-01-16 (DTE=24)
Expiry Vanna: -3.88M (Contribution=31.7%)
Post-Expiry Vanna: -8.36M (More Negative — Trend Risk ↑)
Expiry DTE Vanna Contrib % Post-Expiry Post Regime Tag
2026-01-16 24 -3.88M 31.7% -8.36M More Negative (Trend Risk ↑)
2025-12-26 3 -2.18M 17.8% -10.07M More Negative (Trend Risk ↑)
2026-03-20 87 -1.47M 12.0% -10.78M More Negative (Trend Risk ↑)
2026-06-18 177 -1.08M 8.9% -11.16M More Negative (Trend Risk ↑)
2026-02-20 59 -704.36K 5.8% -11.54M More Negative (Trend Risk ↑)
2026-09-18 269 -671.66K 5.5% -11.57M More Negative (Trend Risk ↑)
2026-01-02 10 -488.99K 4.0% -11.76M More Negative (Trend Risk ↑)
2027-01-15 388 -408.14K 3.3% -11.84M More Negative (Trend Risk ↑)
2027-06-17 541 -368.2K 3.0% -11.88M More Negative (Trend Risk ↑)
2026-04-17 115 -264.85K 2.2% -11.98M More Negative (Trend Risk ↑)
2026-01-09 17 -223.25K 1.8% -12.02M More Negative (Trend Risk ↑)
2027-12-17 724 -199.21K 1.6% -12.05M More Negative (Trend Risk ↑)
2026-01-23 31 -131.66K 1.1% -12.11M More Negative (Trend Risk ↑)
2026-12-18 360 -75.1K 0.6% -12.17M More Negative (Trend Risk ↑)
2028-01-21 759 -57.77K 0.5% -12.19M More Negative (Trend Risk ↑)
2026-01-30 38 -30.43K 0.2% -12.22M More Negative (Trend Risk ↑)
2026-07-17 206 -9.17K 0.1% -12.24M More Negative (Trend Risk ↑)

Volatility Structure & Term Structure

Short-dated and medium-term implied volatility, term structure shape, downside skew, and realized volatility context.

ATM IV Term Structure Snapshot
Symbol: MRK • As of 2025-12-23
30D ATM IV
27.68%
Front-end implied volatility
90D ATM IV
30.71%
Medium-term volatility anchor
IV Ratio (90D / 30D)
1.11
Long-term vs short-term IV
Term Structure Regime
Contango (Long-term Elevated)
Slope: 3.03 pts (30D→90D).

Smile Slope (Put25 – Call25)
10.95%
Downside skew / crash premium
HV 21D vs IV
HV 21D: 29.90%
IV – HV: -2.22%
Options trade cheap vs realized volatility.
IV Percentile / Rank
Percentile: 31.6%
Rank: 0.0%
Relative to 1-year history.
IV Z-Score
-0.01
Deviation vs recent average

ATM IV Term Structure

30D · 90D

IV vs Realized Volatility

HV 21D vs 30D IV
A contango structure shows longer-term volatility is priced higher. Smile slope reflects downside protection demand, while IV percentile and rank show how current IV compares to its own history.

MRK Max Pain — Daily Levels, Trend, Volatility Pressure & Options Positioning

Daily Max Pain levels with trend shifts, volatility pressure and options positioning cycles.

Max Pain Price Trend Index

Latest Trend Interpretation

📈 Max Pain is rising, suggesting upward pressure from options positioning.

⬆️ Trend strength: Moderate upward.

🔼 Recent movement: Max Pain jumped significantly (Δ3.00), indicating stronger bullish appetite.

Trend Shifts

Green = Bullish • Dark Green = Strong Bullish • Gray = Neutral • Red = Bearish • Dark Red = Strong Bearish

Current OI Structure Reliability

OI Concentration / Pain Reliability · Dec 23 2025
Reliability: 38.2 (weak)
Max Pain @ 105.00 | Concentration=0.28 · Symmetry=0.52 · Sharpness=1.14
Reason
OI distribution is weak or irregular — Max Pain signal not reliable.
Advice
Avoid relying on Max Pain alone — options OI structure is not dominant.

Max Pain Price Mean Reversion

Latest Mean Reversion Status
Dec 23 2025
Neutral (Z = 0.01)
Price is near Max Pain, showing balanced options pressure.
Price vs Max Pain Distance
Show Mean Reversion History
Date Price Max Pain Distance Z-Score Signal
2025-12-23 105.04 105.00 0.04 0.01 neutral
2025-12-22 104.72 102.00 2.72 0.48 neutral
2025-12-19 101.09 97.00 4.09 0.72 neutral
2025-12-18 100.69 97.00 3.69 0.65 neutral
2025-12-17 99.18 97.00 2.18 0.38 neutral
2025-12-16 98.27 97.00 1.27 0.22 neutral
2025-12-15 100.26 97.00 3.26 0.57 neutral
2025-12-12 100.30 99.00 1.30 0.23 neutral
2025-12-11 99.01 99.00 0.01 0.00 neutral
2025-12-10 97.62 100.00 -2.38 -0.42 neutral
2025-12-09 96.89 100.00 -3.11 -0.54 neutral
2025-12-08 98.93 100.00 -1.07 -0.19 neutral
2025-12-05 99.72 99.00 0.72 0.13 neutral
2025-12-04 100.89 100.00 0.89 0.16 neutral
2025-12-03 102.27 99.00 3.27 0.57 neutral
2025-12-02 101.03 99.00 2.03 0.36 neutral
2025-12-01 101.83 99.00 2.83 0.50 neutral
2025-11-28 104.83 102.00 2.83 0.50 neutral
2025-11-26 104.63 102.00 2.63 0.46 neutral
2025-11-25 105.66 102.00 3.66 0.64 neutral
2025-11-24 100.40 98.00 2.40 0.42 neutral
2025-11-21 97.76 90.00 7.76 1.36 overbought
2025-11-20 94.97 90.00 4.97 0.87 neutral
2025-11-19 95.05 90.00 5.05 0.88 neutral
2025-11-18 96.43 90.00 6.43 1.13 overbought
2025-11-17 92.86 90.00 2.86 0.50 neutral
2025-11-14 92.92 92.00 0.92 0.16 neutral
2025-11-13 92.93 92.00 0.93 0.16 neutral
2025-11-12 91.45 91.00 0.45 0.08 neutral
2025-11-11 90.95 90.00 0.95 0.17 neutral
2025-11-07 86.28 88.00 -1.72 -0.30 neutral
2025-11-06 85.78 88.00 -2.22 -0.39 neutral
2025-11-05 84.39 88.00 -3.61 -0.63 neutral
2025-11-04 83.86 88.00 -4.14 -0.72 neutral
2025-11-03 82.49 89.00 -6.51 -1.14 oversold
2025-10-31 85.98 86.00 -0.02 -0.00 neutral
2025-10-30 86.28 85.00 1.28 0.22 neutral
2025-10-29 86.58 86.00 0.58 0.10 neutral
2025-10-28 87.03 86.00 1.03 0.18 neutral

Mean Reversion Backtest

Backtest Summary
Total Signals: 3 (Long: 1 · Short: 2)
1-Day Performance
Avg Return: 0.13%
Win Rate: 66.7%
3-Day Performance
Avg Return: -1.47%
Win Rate: 33.3%
Show Last 10 Trades
Date Signal Side Entry 1D Ret 3D Ret
2025-11-21 overbought short 97.76 -2.70% -7.03%
2025-11-18 overbought short 96.43 1.43% -1.38%
2025-11-03 oversold long 82.49 1.66% 3.99%

Historical Max Pain Effectiveness

Based on historical behavior (not current OI)
Insufficient Data
Not enough historical deviations to evaluate effectiveness.
Win Rate
1D: 66.7%
3D: 33.3%
Reversion Strength
0.37
Noise Score
0.67
Score (Win)
18.7 / 40
Score (Strength)
14.8 / 40
Score (Noise)
13.3 / 20
Historical Effectiveness Score: 46.8 (neutral)
Disclaimer

Our analysis incorporates options market microstructure, institutional flow patterns, gamma and vanna dynamics, and dealer hedging models. The analytics and insights provided on this page are generated from a multi-factor options microstructure model, supported by WhaleQuant’s AI forecasting framework. These results reflect structural dynamics such as dealer positioning, hedging flows, volatility regimes, open interest concentration, and term structure behavior.

The outputs shown—including bias assessments and confidence scores—represent directional tendencies based on option market structure and should not be interpreted as price predictions, probability forecasts, or investment advice. Market conditions can change rapidly, and all analyses are provided for informational purposes only.