DIA GEX Today — Gamma Flip & Key Levels
As of Fri 18 Sep 2026 close · all expirations
- Spot
- 516.10
- Gamma flip
- 517.460.3% above spot
- Regime
- Negative gamma
- Positive peak (P1)
- 525.00
- Negative peak (N1)
- 500.00
- Max pain
- 525.0025 Sep 2026 expiry
- Net GEX
- -38.9M
DIA is in negative gamma: the gamma flip at 517.46 is 0.3% above spot (516.10). Below the flip, dealers are short gamma and tend to amplify moves. The top positive gamma peak (P1) is at 525.00 (+1.7% from spot), where dealer hedging tends to stabilize price. The top negative gamma peak (N1) is at 500.00 (-3.1% from spot), a volatility trigger rather than support. The flip moved -0.5% since the previous snapshot (520.05 → 517.46).
DIA GEX levels — last 14 snapshots
| Snapshot | Spot | Gamma flip | P1 | N1 | Regime |
|---|---|---|---|---|---|
| 18 Sep 16:01 ET | 516.10 | 517.46 | 525.00 | 500.00 | Negative |
| 17 Sep 16:04 ET | 518.27 | 520.05 | 520.00 | 510.00 | Negative |
| 16 Sep 16:07 ET | 515.09 | 522.85 | 550.00 | 510.00 | Negative |
| 15 Sep 16:09 ET | 521.34 | 526.40 | 540.00 | 520.00 | Negative |
| 14 Sep 16:14 ET | 524.43 | 526.90 | 550.00 | 520.00 | Negative |
| 11 Sep 16:00 ET | 525.82 | 526.61 | 550.00 | 510.00 | Negative |
| 10 Sep 16:00 ET | 520.77 | 525.62 | 550.00 | 510.00 | Negative |
| 9 Sep 16:00 ET | 524.10 | 528.97 | 540.00 | 510.00 | Negative |
| 8 Sep 16:00 ET | 528.07 | 531.58 | 540.00 | 510.00 | Negative |
| 4 Sep 16:00 ET | 534.08 | 531.70 | 540.00 | 533.00 | Positive |
| 3 Sep 16:00 ET | 536.90 | 531.83 | 540.00 | 532.00 | Positive |
| 2 Sep 16:00 ET | 530.65 | 531.03 | 540.00 | 532.00 | Negative |
| 1 Sep 16:00 ET | 527.72 | 531.29 | 545.00 | 510.00 | Negative |
| 31 Aug 16:00 ET | 531.53 | 532.68 | 545.00 | 530.00 | Negative |
See DIA gamma exposure live
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About DIA options GEX
The SPDR Dow Jones Industrial Average ETF Trust, better known by its ticker DIA, tracks the thirty stocks of the Dow. Options on DIA can be exercised any time before expiry, and exercise delivers fund shares. The index behind it is unusual among major benchmarks because it is price-weighted: a stock with a high share price has more influence than a larger company whose shares trade lower.
The chart turns open interest on all DIA expirations into a single net GEX profile and marks the flip point, the top long-gamma strikes P1 and P2, the top short-gamma strikes N1 and N2, plus max pain.
Price weighting changes how DIA levels behave. A handful of expensive members can drive most of a day's move, so an earnings surprise or downgrade in one of them may push DIA through a positive-gamma peak that would hold against broad market drift. Before relying on a level, it helps to know which of the heaviest-priced names report soon. When DIA open interest is light, its profile has fewer dominant strikes and its flip can move further from one day to the next. Read it alongside DJX, the Dow index options: DJX is cash-settled and quoted on a scaled-down basis, and when both markets highlight the same area, that zone is better supported. For persistence, the GEX heatmap shows which DIA strikes have held over the past month.
DIA levels are computed from end-of-day open interest from the latest available report and appear after the US close, once per trading day.
FAQ
What is DIA?
DIA is the SPDR Dow Jones Industrial Average ETF Trust. It tracks the Dow, a price-weighted index of thirty large US companies, and its listed options are American-style contracts that settle in ETF shares.
Why does price weighting matter for DIA gamma?
The Dow weights its members by share price rather than company size, so a few high-priced stocks can move DIA more than larger companies with lower share prices. News in those names can carry DIA toward or away from its gamma levels.
How does DIA relate to DJX?
Both follow the Dow Jones Industrial Average. DIA options are written on the ETF and deliver shares, while DJX options are written on the index and settle in cash, so the two pages show separate pools of positioning.
How current are the DIA levels?
They reflect end-of-day open interest from the latest available report across all listed DIA expirations; a fresh set is posted each evening after the US session ends, so intraday positioning is not included.
Levels are derived from end-of-period options open interest and are published once a day. Educational information, not investment advice.