SWX · Southwest Gas Holdings, Inc. · Options Chain

Track SWX — free

$86.11 -0.79 (-0.91%)

S&P 400 member Russell 2000 member Rebalance outlook locked

Market Cap

$6.30B

72.45M

Options Chain

Underlying $86.11 · today Options Calculator

Pull option chains with greeks and open interest through the options chain API or MCP →

Positioning

Sep 18, 2026 · 7 days to expiry · 38 contracts · mixed daily-bar sessions · Aug 21, 2026–Sep 4, 2026; 36 unknown

Put / call OI

0.00

Call-heavy positioning

Open interest

as of Sep 9, 2026

Volume

—

dated and unknown daily-bar sessions

Max pain

$90.00

$3.89 above spot

ATM implied vol

43.1%

market's expected move

Open interest by strike

Calls Puts

100

105

110

115

120

125

130

135

140

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Sep 18 7d Oct 16 35d Jan 15 126d Apr 16 217d

Calls								Puts
OI	Vol	IV	Δ	Bid	Ask	Last	Strike	Last	Bid	Ask	Δ	IV	Vol	OI
—	—	—	—	$34.80	$38.50	—		—	$0.00	$4.90	—	—	—	—
Call · $50 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:58:48.599 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $50 Daily-bar session Unknown Quote as of 2026-09-11 19:59:33.939 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$29.80	$33.50	—		—	$0.00	$4.90	—	—	—	—
Call · $55 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:58:48.599 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $55 Daily-bar session Unknown Quote as of 2026-09-11 19:59:33.839 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$24.80	$28.50	—		—	$0.00	$4.90	—	—	—	—
Call · $60 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:58:49.349 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $60 Daily-bar session Unknown Quote as of 2026-09-11 19:59:33.702 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$19.80	$23.50	—		—	$0.00	$4.80	—	—	—	—
Call · $65 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:58:50.349 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $65 Daily-bar session Unknown Quote as of 2026-09-11 19:59:33.591 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$14.80	$18.50	—		—	$0.00	$4.80	—	—	—	—
Call · $70 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:58:50.349 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $70 Daily-bar session Unknown Quote as of 2026-09-11 19:59:33.479 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	81.9%	0.9	$9.80	$13.50	—		—	$0.00	$4.90	—	—	—	—
Call · $75 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:54.390 UTC Last — Breakeven — Implied vol 81.9% Delta 0.9 ≈90% ITM Gamma 0.018 Theta -0.129 Vega 0.021 Open interest — OI effective date — Model this call Put · $75 Daily-bar session Unknown Quote as of 2026-09-11 19:59:33.372 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	57.8%	0.834	$5.10	$8.50	—		—	$0.00	$2.35	—	—	—	—
Call · $80 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:55:05.604 UTC Last — Breakeven — Implied vol 57.8% Delta 0.834 ≈83% ITM Gamma 0.036 Theta -0.13 Vega 0.03 Open interest — OI effective date — Model this call Put · $80 Daily-bar session Unknown Quote as of 2026-09-11 19:59:33.255 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	43.1%	0.602	$0.55	$4.80	—		—	$0.00	$1.30	—	—	—	—
Call · $85 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:32.100 UTC Last — Breakeven — Implied vol 43.1% Delta 0.602 ≈60% ITM Gamma 0.075 Theta -0.147 Vega 0.046 Open interest — OI effective date — Model this call Put · $85 Daily-bar session Unknown Quote as of 2026-09-11 19:59:33.119 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
Underlying $86.11
5	6	—	—	$0.00	$4.80	$0.45		—	$1.55	$4.80	—	—	—	—
Call · $90 Daily-bar session Sep 4, 2026 Quote as of 2026-09-11 19:59:33.199 UTC Last $0.45 Breakeven $90.45 Implied vol — Delta — Gamma — Theta — Vega — Open interest 5 OI effective date Sep 9, 2026 Model this call Put · $90 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:33.218 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
34	2	52.6%	0.096	$0.05	$0.50	$0.40		—	$6.50	$9.70	—	—	—	—
Call · $95 Daily-bar session Aug 21, 2026 Quote as of 2026-09-11 19:59:33.303 UTC Last $0.40 Breakeven $95.40 Implied vol 52.6% Delta 0.096 ≈10% ITM Gamma 0.027 Theta -0.077 Vega 0.02 Open interest 34 OI effective date Sep 9, 2026 Model this call Put · $95 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:58:22.850 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.80	—		—	$11.50	$15.10	—	—	—	—
Call · $100 Daily-bar session Unknown Quote as of 2026-09-11 19:59:33.407 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $100 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:58:22.849 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$4.90	—		—	$16.50	$20.10	—	—	—	—
Call · $105 Daily-bar session Unknown Quote as of 2026-09-11 19:59:33.515 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $105 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:58:22.850 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$4.90	—		—	$21.50	$25.10	—	—	—	—
Call · $110 Daily-bar session Unknown Quote as of 2026-09-11 19:59:33.655 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $110 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:58:22.849 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$4.90	—		—	$26.50	$30.10	—	—	—	—
Call · $115 Daily-bar session Unknown Quote as of 2026-09-11 19:59:33.782 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $115 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:58:22.849 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$4.90	—		—	$31.50	$35.10	—	—	—	—
Call · $120 Daily-bar session Unknown Quote as of 2026-09-11 19:59:33.887 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $120 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:58:22.849 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$4.90	—		—	$36.50	$40.10	—	—	—	—
Call · $125 Daily-bar session Unknown Quote as of 2026-09-11 19:59:33.991 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $125 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:58:22.849 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$4.90	—		—	$41.50	$45.10	—	—	—	—
Call · $130 Daily-bar session Unknown Quote as of 2026-09-11 19:59:34.101 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $130 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:58:22.849 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$4.90	—		—	$46.50	$50.10	—	—	—	—
Call · $135 Daily-bar session Unknown Quote as of 2026-09-11 19:59:34.200 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $135 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:58:22.849 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$4.90	—		—	$51.50	$55.10	—	—	—	—
Call · $140 Daily-bar session Unknown Quote as of 2026-09-11 19:58:21.278 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $140 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:58:22.850 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put

About this data

Each contract's last price, day range and volume belong to the daily-bar session shown in its details; unknown means the source omitted that timestamp. Open interest has its own effective date shown separately; implied volatility and greeks are model values computed when fetched. This chain has mixed daily-bar sessions · Aug 21, 2026–Sep 4, 2026; 36 unknown. Positioning totals are shown only when every returned open-interest value has the same known effective date. Bid and ask are real-time consolidated OPRA readings.

In-the-money strikes are tinted, deepening toward the money, and the bar beside each open-interest figure scales to the heaviest strike shown. Max pain is the listed strike where the most open interest would expire worthless — a positioning reference, not a forecast.

Key facts CIK 1692115 CUSIP 844895102 13F (30d) 200 filings 197 filers Visit website Investor relations