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S&P 500 Stock Market Gamma Trading Levels Based on Options Open Interest

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Market Analysis

Dec 20 2019

Nomuras Gamma Model 12/23/19

Two charts of SPX and SPY gamma: a time series ending at 42.4bn and a curve vs spot flipping at 3130.53.

We like to post Nomuras model snapshot here to compare against ours. Our volatility neutral indicator is lower, but the top matches. Some of this may be explained by Nomura combining SPY and SPX.

Written by SpotGamma · Categorized: Market Analysis · Tagged: gamma flip, market gamma, mcelligott, nomura

Dec 20 2019

Options Market Gamma Theory is All About Volume

Line chart comparing VIX and S&P e-mini futures illiquidity from 2008 to 2019 with green event markers.

Options market gamma numbers proliferate the market but its important to understand what exactly those numbers mean. Yes, positive gamma may indicate lower stock volatility. And when gamma flips from positive to negative that may indicate higher volatility. But the actual gamma number itself is an estimate of how much stock dealers will have to […]

Written by SpotGamma · Categorized: Market Analysis · Tagged: futures, gamma impact, hedging, illiquidity, volume

Dec 19 2019

BusinessInsider.com Talks Gamma

A good primer on market gamma from BI: So why do markets move at all if gamma is, like in this example, the big decelerator? Because it depends who owns it. Market makers use their gamma because they must. There is nothing worse than sitting on a position and bleeding white over time as your […]

Written by SpotGamma · Categorized: Market Analysis · Tagged: business insider, gamma, gamma flip, market makers

Dec 19 2019

Options Model Shows Shift Starting

Line chart of Call and Put from Dec 5-19 2019 with blue Calls high near 250k and orange Puts rising after Dec 13.

December is always a large options expiration as we have large open interest and a SPY dividend payment. Because of all of this the expiration has the potential to mark turning points in the market as large positions are closed, roll or expire. 3200 has been a key level the last week with major options […]

Written by SpotGamma · Categorized: Market Analysis · Tagged: december OPEX, gamma, open interest

Dec 16 2019

Why Dec ’19’s Large Open Interest Could Cause Volatility

Options chain for 20 DEC 19 with calls left and puts right showing open interest, volume and prices by strike.

December OPEX has a many strikes that have large open interest (OI). For calls there are many in the money strikes as you can see in the grid below with OI greater than 20k or 40k – the 3000k strike has 125k contracts. There is large size in puts as well, but these are currently […]

Written by SpotGamma · Categorized: Market Analysis · Tagged: delta hedging, gamma, open interest, options roll

Dec 11 2019

SPX Skew Nears All Time Highs

Scatterplot of SPX Index vs :95105SPX F Index with red trendline, histograms, and pre-Brexit and 2016 election labels.

As per Bloomberg, Skew (which measures the price of calls vs puts) can often spike when investors are concerned about market risk. Puts will be in higher demand than calls and this moves the skew measurement higher. Currently skew is very high due to a slew of events in the next week: FOMC, BREXIT vote, […]

Written by SpotGamma · Categorized: Market Analysis · Tagged: delta, gamma, gamma trap, skew, SPX, SPY

Dec 10 2019

Nomuras Pre-Event Gamma View

From heisenberg: Charlie McElligott, Nomura: “As VVIX & Skew went ‘bid’ BIG TIME yday, this indicates that the market is now once again beginning to price-in ‘tail’ scenarios”, “[That] offers attractive risk-reversal opportunities to play for an upside S&P breakout following a potential ‘hedge puke’”, he added, noting that in the event we do get […]

Written by SpotGamma · Categorized: Market Analysis · Tagged: deadline, gamma, mcgelligot, nomura, tariff

Dec 10 2019

SPX Long Gamma Backtest

Recently an interesting chart was posted on twitter with the backtest of the SPX vs a strategy of owning the SPX only when gamma was positive. This brings up a few interesting points about long gamma and what we think its viable for. Below this chart are some comments and notes regarding the value of […]

Written by SpotGamma · Categorized: Market Analysis · Tagged: gamma backtest, market gamma indicator, spx vs long gamma

Dec 09 2019

December 2019 Market Decline Review

Line chart of Nov-Dec 2019 prices annotated around 3150 gamma, dealer put hedging, and China tariff deadline.

Here is a chart outlining how we saw the selloff during the first week of December 2019. There was record high gamma going into the first week of December which indicates that call:put ratios were at extremes. After a few negative tweets about trade and a poor ISM number selling started, and put buyers stepped […]

Written by SpotGamma · Categorized: Market Analysis · Tagged: gamma, hedging, put buying

Dec 05 2019

SocGen Zero Gamma Chart History

Line chart of S&P500 spot and gamma transition level from Dec 2017 to 2019 noting negative gamma below 3086.

Here is a backtest of where SocGen calculates where positive gamma changes to negative gamma in the S&P500 (SPY). You can view our historical chart here. The concern is that a move through the zero gamma level may set a “gamma trap“. Our FAQ has more information: Zero Gamma Level: This is the estimated level […]

Written by SpotGamma · Categorized: Market Analysis · Tagged: chart, gamma trap, history, socgen, zero gamma

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