Data through close

BSY max pain, gamma exposure (GEX) & options open interest

As of close · rank #1945 by open interest · snapshot page

BSY's nearest-expiration max pain is 35.00 for 2026-11-20, its GEX flip is 8.64, net GEX is 948,056, its put/call open-interest ratio is 0.14. These are whole-chain derived aggregates as of Oct 16, 2026 close.

BSY max pain and GEX snapshot

End-of-day snapshot for . Nearest-expiration max pain uses the expiry shown on its card; GEX uses the whole chain. Missing values are unavailable, not zero.

Nearest-expiration max pain
35.00
-1.0% from close
Expiry: 2026-11-20
GEX flip
8.64
-75.6% from close
Net GEX
948,056
9,196,396 per 100k OI
Call wall
40.00
+13.1% from close
Put wall
35.00
-1.0% from close
Put/call OI
0.14
1,238 puts / 9,071 calls

Prices are in US dollars per share. Net GEX is modeled dollar-delta change per $1 underlying move. Max pain minimizes aggregate intrinsic payout for that expiration; it is not a closing-price forecast. Signed GEX uses calls positive and puts negative, a model convention rather than observed dealer inventory. The flip is a confirmed zero crossing; walls locate side-specific concentrations, not guaranteed support or resistance.

Learn how to read the max pain payout example, GEX chart, gamma flip and walls, and open interest versus trading volume.

Close
35.37
prev 36.23
Gamma max
38.42
+8.6% from close
Delta neutral
27.56
-22.1% from close
Gamma neutral
8.64
-75.6% from close
Open interest
10,309
-7.8% vs prev
Contracts listed
64
43 calls · 32 puts

Advanced options analysis

Public aggregate analysis from the dated chain, normalized where possible for comparison across tickers. Catalyst intensity measures unusual pricing and activity; it does not identify an event, predict direction, or establish that an investment is attractive.

Catalyst intensity
–
cross-sectional score / 100
Directional score
–
IV rank
100.0
within trailing 52-week range
Front IV premium
0.0 pp
front minus back volatility difference
25Δ risk reversal
-4.6 pp
put IV minus call IV
IV butterfly
– pp
front-window smile convexity
Volume / open interest
0.02
200 contracts traded
Normalized net delta
0.246
option-holder convention
Modeled dealer delta
-0.246
opposite-side scenario
Vanna / 100k OI
5,407
volatility-sensitive delta
Charm / 100k OI
-69,481
time-decay-sensitive delta
IV surface range
95.8 pp
aggregate volatility dispersion

Download the dated aggregate analysis JSON .

BSY closed 8.6% below its gamma max of 38.42. It is 22.1% above the delta neutral price of 27.56. Total open interest is 10,309, -7.8% versus the previous session. What gamma max means · What delta neutral means

History

Full history since 2020: drag to pan, scroll to zoom, hover for values. Open full-screen chart

Analysis visualizations

Daily ticker aggregates through 2026-10-16. The max pain curve pools all listed expirations; individual contracts are outside the public dataset.

Aggregate IV history

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In today's screens

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Neighbours by open interest

Questions people ask about BSY

What is BSY's max pain for the nearest expiration?

As of Oct 16, 2026 close, nearest-expiration max pain is 35.00 for the 2026-11-20 expiration. It is a payout-minimizing strike for one expiration. An all-expiration pooled value is a different comparison, and neither establishes where the underlying will close. Max pain definition and worked payout example.

Our 2025 max-pain study compares historical Thursday levels with Friday underlying closes and an unchanged-price baseline. Its scope and results are separate from this current ticker snapshot.

What do BSY's gamma exposure and gamma flip show?

Signed net GEX is 948,056 as of Oct 16, 2026 close. The confirmed GEX flip is 8.64. These aggregate model outputs use calls positive and puts negative. Their sign does not identify dealers' actual positions or predict the next move. How to interpret GEX, gamma flip and walls.

Where is BSY's gamma max today?

As of Oct 16, 2026, the gamma max for BSY is 38.42, +8.6% from the 35.37 close. Gamma max is the underlying price at which the summed gamma of every open contract is largest; how it is computed and why it matters.

Is BSY above or below its delta neutral price?

BSY closed above delta neutral: 35.37 against a delta neutral price of 27.56. The delta neutral price is where the summed delta of the whole chain is zero; the definition.

How much open interest does BSY have?

10,309 contracts of open interest across 64 listed contracts on Oct 16, 2026, -7.8% versus the previous session. What open interest measures.

Levels are recomputed after every trading day from licensed end-of-day options data; only derived aggregates are published. Methodology · Data and licence · Not investment advice.