GAMMA & VOLATILITY$MUMicron Technology, Inc.Open ticker analysis →
Options positioning in Micron Technology is stacking up around the $915 strike into Oct 19, 4.1% above where the stock trades at $878.84. Net gamma reads negative, a setup where hedging can speed moves up instead of slowing them down.
What happened
Across 334 contracts in the Oct 19 expiration, the heaviest gamma sits at $915. Net gamma exposure across the chain comes to roughly $13.57M negative, with about $162.23M of premium traded.
This read uses the standard gamma-map convention, counting call open interest as positive gamma and put open interest as negative. Real dealer books can differ, so treat the sign as a guide to the setup rather than a certainty.
Why it matters
When net gamma is negative, hedging chases the move: market makers buy as the stock rises and sell as it falls. Breaks can travel further and faster than usual in that setup.
For scale, Micron Technology is a mega-cap semiconductors & related devices company valued near $1.05T, so it takes serious money to move the stock, which is what makes signals like this one worth tracking.
With 3 days left, this is expiration-week territory, when pinning pressure around big strikes is usually at its strongest.
Zooming out, $MU has been in a sharp slide, down 13.5% over the past 20 sessions, and it trades below its 20-day average of $1,032.86, near the bottom of that range between $858.00 and $1,108.55.
The numbers
| Stock price | $878.84 |
|---|---|
| Expiration | Oct 19 (3 days) |
| Peak gamma strike | $915 |
| Strike vs. stock | 4.1% above |
| Net gamma exposure | $13.57M (negative) |
| Premium traded | $162.23M |
| Contracts in chain | 334 |
| 40-session range | $858.00, $1,108.55 |
| 20-day average price | $1,032.86 |
| 20-session change | -13.5% |
Three ways this could play out
Bullish continuation
If $MU pushes through $1,108.55, the top of its recent range, it breaks away from the $915 cluster. With negative gamma, hedging can add fuel and extend the move.
Bearish rejection
If $MU drops under $858.00, the bottom of its recent range, the $915 cluster stops acting as support. Negative gamma means hedging sells into the drop and can speed it up.
Neutral stabilization
If $MU hovers near $915 into Oct 19, the cluster does its job and expiration-week pinning becomes the story.
What to watch next
- $915: the peak gamma strike and the most likely pin into expiration.
- Oct 19: expiration, when this positioning rolls off and the magnet effect ends.
- Whether net gamma flips sign as the stock moves. A flip from positive to negative often marks a volatility shift.
- $858.00 and $1,108.55: the edges of the recent trading range.
