Data through close

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

As of close · rank #3576 by open interest · snapshot page

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SDY's nearest-expiration max pain is 146.00 for 2026-10-16, its GEX flip is 133.12, net GEX is 271,020, its put/call open-interest ratio is 0.35. These are whole-chain derived aggregates as of Oct 2, 2026 close.

Close
147.57
prev 147.49
Gamma max
154.01
+4.4% from close
Delta neutral
142.06
-3.7% from close
Gamma neutral
133.12
-9.8% from close
Open interest
1,188
+0.2% vs prev
Contracts listed
99
66 calls · 33 puts

Whole-chain analytics

Derived after the close from the same dated options chain. Signed gamma exposure uses calls positive and puts negative; it is a model convention, not observed dealer inventory.

Nearest max pain
146.00
-1.1% from close
2026-10-16
GEX flip
133.12
-9.8% from close
Net GEX
271,020
22,813,104 per 100k OI
Call wall
150.00
+1.6% from close
Put wall
146.00
-1.1% from close
Put/call OI
0.35
309 puts / 879 calls

Advanced options analysis

Complete derived 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
8.4
within trailing 52-week range
Front / back ATM IV
+16.7% / +14.8%
2.0 pp front premium
Expected move
+3.3%
14 DTE · one standard deviation
ATM straddle / spot
–
front-window midpoint premium
25Δ risk reversal
39.2 pp
put IV minus call IV
IV butterfly
– pp
front-window smile convexity
Volume / open interest
0.01
13 contracts traded
Normalized net delta
0.149
option-holder convention
Modeled dealer delta
-0.149
opposite-side scenario
Vanna / 100k OI
842
volatility-sensitive delta
Charm / 100k OI
-200,168
time-decay-sensitive delta
IV surface range
67.8 pp
published contour maximum minus minimum

Download the complete dated analysis JSON .

SDY closed 4.4% below its gamma max of 154.01. It is 3.7% above the delta neutral price of 142.06. Total open interest is 1,188, +0.2% 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

Derived from the 2026-10-02 options chain. Select an analysis to explore its chart.

Gamma walls

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In today's screens

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Neighbours by open interest

← MGTN (#3575) ZIP (#3577) →

Questions people ask about SDY

Where is SDY's gamma max today?

As of Oct 2, 2026, the gamma max for SDY is 154.01, +4.4% from the 147.57 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 SDY above or below its delta neutral price?

SDY closed above delta neutral: 147.57 against a delta neutral price of 142.06. The delta neutral price is where the summed delta of the whole chain is zero; the definition.

How much open interest does SDY have?

1,188 contracts of open interest across 99 listed contracts on Oct 2, 2026, +0.2% 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.