ILMN
Illumina Inc.As of 2026-10-30 14:54 ET, ILMN net GEX is -$720K per 1% move; ILMN call wall is $290; put wall is $230.
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More ILMN options data
The price and the session change are a point-in-time snapshot taken at the time shown. The gamma levels run on a different clock: they are computed 2026-10-31 12:37 ET from the open interest carried on the option chain at that time and are not intraday values. Dealer positioning is an assumption, not an observable: open interest shows that a contract exists, never which side a dealer holds. How dealer gamma is computed.
As of 2026-10-31 12:37 ET, SquawkFlow published ILMN at $235.99 at the 4:00 PM ET close on 2026-10-30 (-18.64%), net dealer gamma of -$720K, a call wall at 290, a put wall at 230 and a zero-gamma flip at 230. The gamma figures are computed 2026-10-31 12:37 ET from the open interest carried on the option chain at that time; dealer positioning is an assumption, not an observable. Source: SquawkFlow, https://squawkflow.com/ticker/ILMN.
MARKET SNAPSHOT
| Call Wall | 290 |
| Put Wall | 230 |
| GEX Flip | 230 |
| Swing Line | 280 |
| Net GEX | -$720K |
Cached snapshot as of 2026-10-31 12:37 ET, live streaming data in the terminal.
ILMN DEALER GAMMA BY STRIKE
Part of the SquawkFlow GEX Calculator: gamma by strike for any US stock. Compare with SPX GEX.
Net gamma exposure at each strike near ILMN's spot price, signed from the dealer perspective, calls positive, puts negative. Green strikes are where hedging tends to dampen moves; red is where it tends to amplify them. Dealer positioning is an assumption rather than an observable, so treat these as a map of where hedging pressure concentrates, not a forecast.
Unit: USD of dealer gamma per 1 percent move in spot. A window of the ILMN option chain, not the whole book: the 30 strikes nearest spot out of 52 seen, 176 contract rows spanning 2 expirations. Gamma is taken as the chain publishes it per contract; nothing here is re-priced. Crossed with the open interest carried on that chain. These rows came from the last chain saved to disk, not from a fresh provider response, so the vintage is older than the calculation time.
New to these levels? Start with the call wall and put wall, or the zero gamma level where the sign of dealer hedging flips.
All captured expirations. Chain as of .
| Strike | Net GEX | Call GEX | Put GEX | Concentration |
|---|---|---|---|---|
| 350 | $28.3K | $28.4K | -$119 | |
| 340 | $25.9K | $25.9K | $0 | |
| 330 | $23.3K | $23.5K | -$159 | |
| 320 | $42.9K | $43.8K | -$889 | |
| 310 | $21.6K | $22.6K | -$1.0K | |
| 300 | -$126.0K | $95.6K | -$221.7K | |
| 290CALL WALL | $30.0K | $128.0K | -$97.9K | |
| 280 | $30.3K | $126.8K | -$96.5K | |
| 270 | -$122.5K | $65.1K | -$187.6K | |
| 260 | -$370.3K | $77.4K | -$447.7K | |
| 250 | -$133.4K | $87.4K | -$220.7K | |
| 240SPOT | -$176.1K | $122.4K | -$298.5K | |
| 230PUT WALLGEX FLIP | -$219.5K | $81.3K | -$300.8K | |
| 220 | $229.3K | $325.6K | -$96.3K | |
| 210 | $29.3K | $122.0K | -$92.7K | |
| 200 | -$14.1K | $37.2K | -$51.3K | |
| 195 | -$42.5K | $15.8K | -$58.3K | |
| 190 | $9.7K | $33.9K | -$24.2K | |
| 185 | $22.4K | $26.7K | -$4.3K | |
| 180 | -$929 | $5.3K | -$6.3K | |
| 175 | -$8.6K | $2.2K | -$10.8K | |
| 170 | -$430 | $4.6K | -$5.1K | |
| 165 | $1.0K | $1.9K | -$844 | |
| 160 | $2.3K | $4.7K | -$2.4K | |
| 155 | $1.6K | $3.4K | -$1.8K | |
| 150 | -$1.9K | $430 | -$2.3K | |
| 145 | -$940 | $1.5K | -$2.4K | |
| 140 | -$102 | $136 | -$238 | |
| 135 | -$850 | $283 | -$1.1K | |
| 130 | -$113 | $340 | -$453 |
These levels were captured October 31, 2026 from the open interest carried on the option chain. New levels post before each market open. Today's SPX gamma levels.
COMMON QUESTIONS
- What was the last ILMN price on this page?
- ILMN close, Oct 30: $235.99 (-18.64%), as of 2026-10-31 12:37 ET.
- What are the ILMN call wall and put wall?
- As of 2026-10-31 12:37 ET, the ILMN call wall was at 290 and the put wall at 230, computed 2026-10-31 12:37 ET from the open interest carried on the option chain at that time.
- What is ILMN net dealer gamma?
- As of 2026-10-31 12:37 ET, net dealer gamma for ILMN was -$720K, Negative gamma. Dealer positioning is an assumption, not an observable.
- Where is the ILMN gamma flip?
- As of 2026-10-31 12:37 ET, the ILMN zero-gamma flip was at 230, computed 2026-10-31 12:37 ET from the open interest carried on the option chain at that time.
- How often do these ILMN figures change?
- The price is a snapshot taken at the time shown. The gamma levels come from open interest that settles once per trading day, and the page refreshes at most once an hour.
ABOUT ILMN
Illumina provides DNA sequencing and array-based technologies. Its platforms serve genomic research, clinical diagnostics, and reproductive health applications.
WHY TRACK ILMN ON SQUAWKFLOW
ILMN options flow signals shifts in genomics spending and competitive dynamics. Unusual volume often precedes sequencing instrument launch cycles and large-scale population genomics contract awards.
ILMN IN 13F FILINGS
3 of the 8 managers in SquawkFlow's 13F cohort with a filing on record reported shares of ILMN (filed as Illumina Inc, classes Common Stock / COM) in their most recent Form 13F filing (newest: 2026-Q2, filed August 14, 2026). A 13F is filed up to 45 days after the quarter ends, so it is a dated snapshot, not a trade record.
- ARK Investment Management LLC reported 1,045,010 shares ($184M) at the end of 2026-Q2, filed August 14, 2026. 2026-Q2 filing
- Renaissance Technologies LLC reported 826,642 shares ($145M) at the end of 2026-Q2, filed August 13, 2026. 2026-Q2 filing
- Bridgewater Associates LP reported 12,586 shares ($2.2M) at the end of 2026-Q2, filed August 14, 2026. 2026-Q2 filing
Form 13F reports long positions in 13(f) securities held on the last day of the quarter. It excludes short positions, cash, and assets outside 13(f) scope. An absent security is not evidence of a sale. Matched on the issuer name and share class as filed. The cohort is a named set of managers, not every 13F filer. All cohort managers
ILMN DATA ON SQUAWKFLOW
Options Flow
ILMN options flow, unusual activity, and volume concentrations from the session chain
Latest Snapshot
Last ILMN price, change, volume, and the current dealer-gamma regime
GEX Dashboard
ILMN gamma exposure levels, call/put walls, and GEX flip
AI Narration
AI-powered analysis of ILMN market microstructure in real time
News Sentiment
ILMN news with AI sentiment scoring and impact analysis
Sector Context
Healthcare sector rotation and relative strength vs peers
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