What is the SWX options turnover ratio?

As of May 28, 2026, SWX turnover ratio is 0.00 (0 contracts traded against 211 contracts outstanding). A turnover ratio below 0.5 is typical maintenance flow against existing positions.

Where is SWX open interest concentrated?

Gamma concentration is 0.24: open interest is more distributed across strikes, reducing any single-strike pinning force. The full per-strike open-interest distribution is visible in the chain view.

Why does volume-open-interest matter for SWX options?

Volume tells you what is being traded today; open interest tells you what was already there. The combination separates opening flow (today's volume building new positions) from closing flow (today's volume unwinding existing ones), and locates the strikes that carry hedging-driven support or resistance based on dealer-gamma concentration.

Southwest Gas Holdings, Inc. (SWX) Volume & Open Interest

Volume and open interest by strike show where trading activity and outstanding positions are concentrated. Clusters of OI often act as support and resistance levels.

Southwest Gas Holdings, Inc. (SWX) operates in the Utilities sector, specifically the Regulated Gas industry, with a market capitalization near $6.51B, listed on NYSE, employing roughly 11,122 people, carrying a beta of 0.62 to the broader market. Southwest Gas Holdings, Inc. Led by Karen S. Haller, public since 1972-06-01.

Snapshot as of May 28, 2026.

Spot Price: $86.93
Total Volume: 0
Total OI: 211
Call OI: 173
Put OI: 38
Gamma Concentration: 0.24

As of May 28, 2026, Southwest Gas Holdings, Inc. (SWX) has 0 contracts traded today against 211 contracts outstanding. Open interest breaks down as 173 calls and 38 puts. Turnover ratio is 0.00: typical maintenance flow relative to existing positions. Gamma concentration is 0.24: open interest is more distributed across strikes. Comparing today's volume to accumulated open interest reveals whether flow is opening new positions or closing existing ones, with heavy OI strikes often acting as support and resistance.

How SWX volume & open interest Data Feeds Strategy Selection

Strategy selection on Southwest Gas Holdings, Inc. options does not derive from any single metric in isolation. The volume & open interest view above sits inside a broader read: ATM IV currently sits at 429.7% and dealer gamma exposure is positive, so dealer hedging is mechanically mean-reverting. Combine the volume & open interest data here with the volatility-skew surface, dealer-gamma exposure, max-pain level, and upcoming-events calendar to build a positioning thesis. Risk-defined structures (credit spreads, debit spreads, iron condors) are usually safer than naked positions while the regime is uncertain; the data on this page anchors the inputs but does not by itself constitute a trade thesis.

How to read the SWX volume and OI data

The two-panel chart above splits Southwest Gas Holdings, Inc. contract activity into volume (daily flow) and open interest (cumulative inventory) per strike. The per-strike grid table beneath gives the precise numbers for the densest 30 strikes. Total call OI of 173 versus put OI of 38 gives a put/call OI ratio of 0.22 - structurally a slower-moving signal than the volume-based ratio.

SWX flow vs positioning

Volume tells you what flows happened today; OI tells you what positions accumulated. Both can move in opposite directions: rising volume with falling OI means contracts are being closed (covering); rising volume with rising OI means new positions are being opened. The combination matters more than either alone for reading sentiment. The per-strike grid distinguishes the strikes attracting flow today from the strikes carrying accumulated inventory - high volume at strikes that also carry high OI typically means rolling activity (closing front-month, opening longer-dated), high volume at low-OI strikes typically means fresh directional positioning. Combined with the current positive dealer-gamma regime, large OI clusters tend to act as price magnets through expiration cycles.

Using SWX OI/volume data alongside other surfaces

Per-strike OI is the input to dealer-gamma calculations: strikes with elevated call OI generate gamma walls that dealers must hedge into as spot approaches them. The gamma-exposure page combines this distribution with the dealers' assumed-long-gamma assumption to project hedge flow. Volume cross-checks recent positioning shifts in the chain that haven't yet shown up in cumulative OI. Pair both with the term-structure view on the volatility page to determine whether the activity is concentrated in near-dated event hedging or longer-dated structural positioning. Front-month expiration for SWX sits at 21 days, so near-dated volume currently dominates the flow reading.

Learn how volume and open interest is reported and how to read the data →

Frequently asked SWX volume & open interest questions

What is the SWX options turnover ratio?: As of May 28, 2026, SWX turnover ratio is 0.00 (0 contracts traded against 211 contracts outstanding). A turnover ratio below 0.5 is typical maintenance flow against existing positions.
Where is SWX open interest concentrated?: Gamma concentration is 0.24: open interest is more distributed across strikes, reducing any single-strike pinning force. The full per-strike open-interest distribution is visible in the chain view.
Why does volume-open-interest matter for SWX options?: Volume tells you what is being traded today; open interest tells you what was already there. The combination separates opening flow (today's volume building new positions) from closing flow (today's volume unwinding existing ones), and locates the strikes that carry hedging-driven support or resistance based on dealer-gamma concentration.