ZG · Zillow Group, Inc.

Track ZG — free Ask ALVIS about ZG

$31.98 +1.30 (+4.22%)

Market Cap

$7.02B

228.80M

Options Chain

15-min delayed Underlying $31.98 · today Options Calculator

Positioning

Aug 21, 2026 · 25 days to expiry · 38 contracts

Put / call OI

1.04

Balanced positioning

Open interest

3,813

contracts outstanding

Volume

271

traded today

Max pain

$40.00

$8.03 above spot

ATM implied vol

77.9%

market's expected move

Open interest by strike

Calls Puts

22.5

100

105

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 25d Sep 18 53d Nov 20 116d Dec 18 144d Feb 19 207d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
0	—	156.2%	0.91	—		$0.13	-0.037	106.9%	2	23
Call · $20 In the money Last — Breakeven — Implied vol 156.2% Delta 0.91 ≈91% ITM Gamma 0.013 Theta -0.044 Vega 0.011 Open interest 0 Model this call Put · $20 Last $0.13 Breakeven $19.87 Implied vol 106.9% Delta -0.037 ≈4% ITM Gamma 0.009 Theta -0.014 Vega 0.007 Open interest 23 Model this put
0	—	134.8%	0.873	—		$0.18	-0.089	108.5%	4	82
Call · $22.5 In the money Last — Breakeven — Implied vol 134.8% Delta 0.873 ≈87% ITM Gamma 0.019 Theta -0.048 Vega 0.018 Open interest 0 Model this call Put · $22.5 Last $0.18 Breakeven $22.32 Implied vol 108.5% Delta -0.089 ≈9% ITM Gamma 0.018 Theta -0.029 Vega 0.012 Open interest 82 Model this put
1	1	112.4%	0.829	$6.10		$0.41	-0.131	89.5%	2	323
Call · $25 In the money Last $6.10 Breakeven $31.10 Implied vol 112.4% Delta 0.829 ≈83% ITM Gamma 0.028 Theta -0.05 Vega 0.019 Open interest 1 Model this call Put · $25 Last $0.41 Breakeven $24.59 Implied vol 89.5% Delta -0.131 ≈13% ITM Gamma 0.029 Theta -0.031 Vega 0.019 Open interest 323 Model this put
32	6	80.7%	0.639	$5.58		$2.75	-0.357	75%	2	440
Call · $30 In the money Last $5.58 Breakeven $35.58 Implied vol 80.7% Delta 0.639 ≈64% ITM Gamma 0.057 Theta -0.052 Vega 0.032 Open interest 32 Model this call Put · $30 Last $2.75 Breakeven $27.25 Implied vol 75% Delta -0.357 ≈36% ITM Gamma 0.061 Theta -0.045 Vega 0.032 Open interest 440 Model this put
Underlying $31.98
98	8	86.6%	0.37	$1.65		$4.08	-0.628	88.3%	10	689
Call · $35 Last $1.65 Breakeven $36.65 Implied vol 86.6% Delta 0.37 ≈37% ITM Gamma 0.053 Theta -0.056 Vega 0.03 Open interest 98 Model this call Put · $35 In the money Last $4.08 Breakeven $30.92 Implied vol 88.3% Delta -0.628 ≈63% ITM Gamma 0.053 Theta -0.054 Vega 0.03 Open interest 689 Model this put
380	61	82.7%	0.16	$0.64		$8.20	-1	0.2%	2	376
Call · $40 Last $0.64 Breakeven $40.64 Implied vol 82.7% Delta 0.16 ≈16% ITM Gamma 0.036 Theta -0.034 Vega 0.025 Open interest 380 Model this call Put · $40 In the money Last $8.20 Breakeven $31.80 Implied vol 0.2% Delta -1 ≈100% ITM Gamma 0 Theta 0 Vega 0 Open interest 376 Model this put
804	60	82.4%	0.063	$0.20		$13.35	—	—	1	14
Call · $45 Last $0.20 Breakeven $45.20 Implied vol 82.4% Delta 0.063 ≈6% ITM Gamma 0.018 Theta -0.017 Vega 0.01 Open interest 804 Model this call Put · $45 In the money Last $13.35 Breakeven $31.65 Implied vol — Delta — Gamma — Theta — Vega — Open interest 14 Model this put
323	41	117.4%	0.087	$0.05		$14.40	—	—	4	0
Call · $50 Last $0.05 Breakeven $50.05 Implied vol 117.4% Delta 0.087 ≈9% ITM Gamma 0.017 Theta -0.031 Vega 0.011 Open interest 323 Model this call Put · $50 In the money Last $14.40 Breakeven $35.60 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
64	4	133.6%	0.079	$0.10		$12.20	—	—	5	0
Call · $55 Last $0.10 Breakeven $55.10 Implied vol 133.6% Delta 0.079 ≈8% ITM Gamma 0.013 Theta -0.033 Vega 0.011 Open interest 64 Model this call Put · $55 In the money Last $12.20 Breakeven $42.80 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
13	1	144.1%	0.065	$0.60		—	—	—	—	0
Call · $60 Last $0.60 Breakeven $60.60 Implied vol 144.1% Delta 0.065 ≈6% ITM Gamma 0.011 Theta -0.03 Vega 0.012 Open interest 13 Model this call Put · $60 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
45	4	164.2%	0.071	$0.30		$9.00	—	—	2	0
Call · $65 Last $0.30 Breakeven $65.30 Implied vol 164.2% Delta 0.071 ≈7% ITM Gamma 0.01 Theta -0.037 Vega 0.012 Open interest 45 Model this call Put · $65 In the money Last $9.00 Breakeven $56.00 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
30	1	168.8%	0.054	$0.17		$27.80	—	—	1	0
Call · $70 Last $0.17 Breakeven $70.17 Implied vol 168.8% Delta 0.054 ≈5% ITM Gamma 0.008 Theta -0.031 Vega 0.012 Open interest 30 Model this call Put · $70 In the money Last $27.80 Breakeven $42.20 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
6	3	169.1%	0.04	$1.15		$12.43	—	—	1	0
Call · $75 Last $1.15 Breakeven $76.15 Implied vol 169.1% Delta 0.04 ≈4% ITM Gamma 0.006 Theta -0.024 Vega 0.006 Open interest 6 Model this call Put · $75 In the money Last $12.43 Breakeven $62.57 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
1	1	178.5%	0.039	$0.11		—	—	—	—	0
Call · $80 Last $0.11 Breakeven $80.11 Implied vol 178.5% Delta 0.039 ≈4% ITM Gamma 0.006 Theta -0.025 Vega 0.007 Open interest 1 Model this call Put · $80 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
27	27	—	—	$4.90		—	—	—	—	0
Call · $85 Last $4.90 Breakeven $89.90 Implied vol — Delta — Gamma — Theta — Vega — Open interest 27 Model this call Put · $85 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
12	5	—	—	$0.30		—	—	—	—	0
Call · $90 Last $0.30 Breakeven $90.30 Implied vol — Delta — Gamma — Theta — Vega — Open interest 12 Model this call Put · $90 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
8	1	—	—	$0.05		—	—	—	—	0
Call · $95 Last $0.05 Breakeven $95.05 Implied vol — Delta — Gamma — Theta — Vega — Open interest 8 Model this call Put · $95 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
10	10	—	—	$0.10		—	—	—	—	0
Call · $100 Last $0.10 Breakeven $100.10 Implied vol — Delta — Gamma — Theta — Vega — Open interest 10 Model this call Put · $100 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
12	1	—	—	$0.11		—	—	—	—	0
Call · $105 Last $0.11 Breakeven $105.11 Implied vol — Delta — Gamma — Theta — Vega — Open interest 12 Model this call Put · $105 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — 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 1617640 CUSIP 98954M101 13F (30d) 41 filings 41 filers Visit website Investor relations