LNT · Alliant Energy Corp

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$70.20 -0.46 (-0.65%) At close · Aug 5

Market Cap

$18.13B

258.28M

Options Chain

15-min delayed Underlying $70.20 · at close Aug 5, 2026 Options Calculator

Positioning

Aug 21, 2026 · 15 days to expiry · 26 contracts

Put / call OI

1.44

Put-heavy positioning

Open interest

359

contracts outstanding

Volume

traded today

Max pain

$75.00

$4.80 above spot

ATM implied vol

20.5%

market's expected move

Open interest by strike

Calls Puts

67.5

72.5

77.5

82.5

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 15d Sep 18 43d Oct 16 71d Jan 15 162d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
0	—	—	—	—		—	—	—	—	0
Call · $55 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $55 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
1	1	—	—	$10.95		$0.10	—	—	26	36
Call · $60 In the money Last $10.95 Breakeven $70.95 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this call Put · $60 Last $0.10 Breakeven $59.90 Implied vol — Delta — Gamma — Theta — Vega — Open interest 36 Model this put
0	—	32.2%	0.894	—		$0.20	-0.128	36.1%	2	32
Call · $65 In the money Last — Breakeven — Implied vol 32.2% Delta 0.894 ≈89% ITM Gamma 0.039 Theta -0.027 Vega 0.025 Open interest 0 Model this call Put · $65 Last $0.20 Breakeven $64.80 Implied vol 36.1% Delta -0.128 ≈13% ITM Gamma 0.041 Theta -0.036 Vega 0.037 Open interest 32 Model this put
1	1	26.6%	0.791	$6.35		$0.70	-0.298	42.9%	22	14
Call · $67.5 In the money Last $6.35 Breakeven $73.85 Implied vol 26.6% Delta 0.791 ≈79% ITM Gamma 0.075 Theta -0.036 Vega 0.038 Open interest 1 Model this call Put · $67.5 Last $0.70 Breakeven $66.80 Implied vol 42.9% Delta -0.298 ≈30% ITM Gamma 0.056 Theta -0.07 Vega 0.049 Open interest 14 Model this put
12	3	19%	0.573	$2.00		$0.70	-0.434	22.1%	1	40
Call · $70 In the money Last $2.00 Breakeven $72.00 Implied vol 19% Delta 0.573 ≈57% ITM Gamma 0.143 Theta -0.035 Vega 0.057 Open interest 12 Model this call Put · $70 Last $0.70 Breakeven $69.30 Implied vol 22.1% Delta -0.434 ≈43% ITM Gamma 0.123 Theta -0.041 Vega 0.057 Open interest 40 Model this put
Underlying $70.20
19	5	21.4%	0.266	$0.50		$1.70	-0.695	25.6%	5	38
Call · $72.5 Last $0.50 Breakeven $73.00 Implied vol 21.4% Delta 0.266 ≈27% ITM Gamma 0.106 Theta -0.033 Vega 0.051 Open interest 19 Model this call Put · $72.5 In the money Last $1.70 Breakeven $70.80 Implied vol 25.6% Delta -0.695 ≈70% ITM Gamma 0.095 Theta -0.042 Vega 0.051 Open interest 38 Model this put
61	1	26.6%	0.131	$0.10		$4.29	-0.796	34.8%	10	52
Call · $75 Last $0.10 Breakeven $75.10 Implied vol 26.6% Delta 0.131 ≈13% ITM Gamma 0.056 Theta -0.027 Vega 0.026 Open interest 61 Model this call Put · $75 In the money Last $4.29 Breakeven $70.71 Implied vol 34.8% Delta -0.796 ≈80% ITM Gamma 0.056 Theta -0.046 Vega 0.04 Open interest 52 Model this put
12	1	31.7%	0.074	$0.05		—	-0.906	34.2%	—	0
Call · $77.5 Last $0.05 Breakeven $77.55 Implied vol 31.7% Delta 0.074 ≈7% ITM Gamma 0.031 Theta -0.021 Vega 0.027 Open interest 12 Model this call Put · $77.5 In the money Last — Breakeven — Implied vol 34.2% Delta -0.906 ≈91% ITM Gamma 0.034 Theta -0.026 Vega 0.027 Open interest 0 Model this put
9	1	49.5%	0.117	$0.11		$5.46	-0.849	57%	2	0
Call · $80 Last $0.11 Breakeven $80.11 Implied vol 49.5% Delta 0.117 ≈12% ITM Gamma 0.027 Theta -0.045 Vega 0.027 Open interest 9 Model this call Put · $80 In the money Last $5.46 Breakeven $74.54 Implied vol 57% Delta -0.849 ≈85% ITM Gamma 0.029 Theta -0.063 Vega 0.041 Open interest 0 Model this put
26	2	63.1%	0.125	$0.75		$10.55	-0.864	65.7%	1	0
Call · $82.5 Last $0.75 Breakeven $83.25 Implied vol 63.1% Delta 0.125 ≈13% ITM Gamma 0.023 Theta -0.061 Vega 0.028 Open interest 26 Model this call Put · $82.5 In the money Last $10.55 Breakeven $71.95 Implied vol 65.7% Delta -0.864 ≈86% ITM Gamma 0.023 Theta -0.066 Vega 0.028 Open interest 0 Model this put
0	—	—	—	—		—	-0.876	73.7%	—	0
Call · $85 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $85 In the money Last — Breakeven — Implied vol 73.7% Delta -0.876 ≈88% ITM Gamma 0.019 Theta -0.069 Vega 0.028 Open interest 0 Model this put
0	—	—	—	—		—	-0.893	88.9%	—	0
Call · $90 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $90 In the money Last — Breakeven — Implied vol 88.9% Delta -0.893 ≈89% ITM Gamma 0.014 Theta -0.075 Vega 0.029 Open interest 0 Model this put
6	6	—	—	$0.25		—	-0.904	103.4%	—	0
Call · $95 Last $0.25 Breakeven $95.25 Implied vol — Delta — Gamma — Theta — Vega — Open interest 6 Model this call Put · $95 In the money Last — Breakeven — Implied vol 103.4% Delta -0.904 ≈90% ITM Gamma 0.011 Theta -0.081 Vega 0.029 Open interest 0 Model this put

About this data

Greeks, implied volatility, open interest and the last price come from the latest daily snapshot and are 15-minute delayed. Bid and ask are not included on this plan.

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 352541 CUSIP 018802108 13F (30d) 412 filings 384 filers Visit website Investor relations