Z · Zillow Group, Inc.

Track Z — free

$36.58 +2.01 (+5.80%) At close · Aug 19

Market Cap

$7.93B

224.87M

Options Chain

Underlying $36.58 · today Options Calculator

Positioning

Aug 21, 2026 · 1 days to expiry · 60 contracts · mixed snapshot sessions · Jan 13, 2026–Aug 19, 2026; 7 unknown

Put / call OI

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dated and unknown snapshot sessions

Open interest

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dated and unknown snapshot sessions

Volume

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dated and unknown snapshot sessions

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 1d Sep 18 29d Nov 20 92d Dec 18 120d Jan 15 148d Feb 19 183d Mar 19 211d Jun 17 301d Sep 17 393d Jan 21 519d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
10	3	406.2%	0.989	$16.70		$0.03	-0.016	435.8%	32	249
Call · $20 In the money Snapshot session Aug 19, 2026 Last $16.70 Breakeven $36.70 Implied vol 406.2% Delta 0.989 ≈99% ITM Gamma 0.003 Theta -0.087 Vega 0.001 Open interest 10 Model this call Put · $20 Snapshot session Aug 11, 2026 Last $0.03 Breakeven $19.97 Implied vol 435.8% Delta -0.016 ≈2% ITM Gamma 0.004 Theta -0.125 Vega 0.001 Open interest 249 Model this put
1	6	—	—	$9.15		$0.04	-0.024	381.9%	2	1.4k
Call · $22.5 In the money Snapshot session Aug 6, 2026 Last $9.15 Breakeven $31.65 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this call Put · $22.5 Snapshot session Aug 19, 2026 Last $0.04 Breakeven $22.46 Implied vol 381.9% Delta -0.024 ≈2% ITM Gamma 0.006 Theta -0.155 Vega 0.002 Open interest 1.4k Model this put
23	2	—	—	$8.09		$0.05	-0.029	307.5%	3	1.2k
Call · $25 In the money Snapshot session Jul 30, 2026 Last $8.09 Breakeven $33.09 Implied vol — Delta — Gamma — Theta — Vega — Open interest 23 Model this call Put · $25 Snapshot session Aug 19, 2026 Last $0.05 Breakeven $24.95 Implied vol 307.5% Delta -0.029 ≈3% ITM Gamma 0.008 Theta -0.146 Vega 0.002 Open interest 1.2k Model this put
113	5	—	—	$7.10		$0.03	-0.03	229.4%	1	2.9k
Call · $27.5 In the money Snapshot session Aug 18, 2026 Last $7.10 Breakeven $34.60 Implied vol — Delta — Gamma — Theta — Vega — Open interest 113 Model this call Put · $27.5 Snapshot session Aug 19, 2026 Last $0.03 Breakeven $27.47 Implied vol 229.4% Delta -0.03 ≈3% ITM Gamma 0.011 Theta -0.111 Vega 0.002 Open interest 2.9k Model this put
227	1	—	—	$7.10		$0.03	-0.04	168.7%	1	3.8k
Call · $30 In the money Snapshot session Aug 19, 2026 Last $7.10 Breakeven $37.10 Implied vol — Delta — Gamma — Theta — Vega — Open interest 227 Model this call Put · $30 Snapshot session Aug 19, 2026 Last $0.03 Breakeven $29.97 Implied vol 168.7% Delta -0.04 ≈4% ITM Gamma 0.019 Theta -0.102 Vega 0.002 Open interest 3.8k Model this put
1.1k	18	—	—	$4.10		$0.05	-0.089	132.3%	151	3.4k
Call · $32.5 In the money Snapshot session Aug 19, 2026 Last $4.10 Breakeven $36.60 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1.1k Model this call Put · $32.5 Snapshot session Aug 19, 2026 Last $0.05 Breakeven $32.45 Implied vol 132.3% Delta -0.089 ≈9% ITM Gamma 0.047 Theta -0.151 Vega 0.004 Open interest 3.4k Model this put
1.1k	176	53.4%	0.899	$1.74		$0.10	-0.142	64.4%	313	2.3k
Call · $35 In the money Snapshot session Aug 19, 2026 Last $1.74 Breakeven $36.74 Implied vol 53.4% Delta 0.899 ≈90% ITM Gamma 0.127 Theta -0.07 Vega 0.004 Open interest 1.1k Model this call Put · $35 Snapshot session Aug 19, 2026 Last $0.10 Breakeven $34.90 Implied vol 64.4% Delta -0.142 ≈14% ITM Gamma 0.135 Theta -0.103 Vega 0.007 Open interest 2.3k Model this put
Underlying $36.58
1k	499	55.7%	0.301	$0.28		$1.30	-0.658	70%	398	1.4k
Call · $37.5 Snapshot session Aug 19, 2026 Last $0.28 Breakeven $37.78 Implied vol 55.7% Delta 0.301 ≈30% ITM Gamma 0.242 Theta -0.14 Vega 0.009 Open interest 1k Model this call Put · $37.5 In the money Snapshot session Aug 19, 2026 Last $1.30 Breakeven $36.20 Implied vol 70% Delta -0.658 ≈66% ITM Gamma 0.205 Theta -0.183 Vega 0.009 Open interest 1.4k Model this put
1.4k	308	84.5%	0.077	$0.05		$2.97	-0.921	85.6%	13	326
Call · $40 Snapshot session Aug 19, 2026 Last $0.05 Breakeven $40.05 Implied vol 84.5% Delta 0.077 ≈8% ITM Gamma 0.066 Theta -0.088 Vega 0.005 Open interest 1.4k Model this call Put · $40 In the money Snapshot session Aug 19, 2026 Last $2.97 Breakeven $37.03 Implied vol 85.6% Delta -0.921 ≈92% ITM Gamma 0.068 Theta -0.088 Vega 0.005 Open interest 326 Model this put
1.7k	22	152.9%	0.096	$0.05		$8.25	-0.894	159.1%	1	3
Call · $42.5 Snapshot session Aug 17, 2026 Last $0.05 Breakeven $42.55 Implied vol 152.9% Delta 0.096 ≈10% ITM Gamma 0.043 Theta -0.186 Vega 0.005 Open interest 1.7k Model this call Put · $42.5 In the money Snapshot session Aug 13, 2026 Last $8.25 Breakeven $34.25 Implied vol 159.1% Delta -0.894 ≈89% ITM Gamma 0.045 Theta -0.204 Vega 0.005 Open interest 3 Model this put
2.8k	2	232.2%	0.123	$0.05		$10.50	—	—	300	31
Call · $45 Snapshot session Aug 19, 2026 Last $0.05 Breakeven $45.05 Implied vol 232.2% Delta 0.123 ≈12% ITM Gamma 0.034 Theta -0.338 Vega 0.005 Open interest 2.8k Model this call Put · $45 In the money Snapshot session Aug 17, 2026 Last $10.50 Breakeven $34.50 Implied vol — Delta — Gamma — Theta — Vega — Open interest 31 Model this put
835	1	242%	0.075	$0.04		$14.50	-0.872	294.3%	119	29
Call · $47.5 Snapshot session Aug 19, 2026 Last $0.04 Breakeven $47.54 Implied vol 242% Delta 0.075 ≈8% ITM Gamma 0.023 Theta -0.246 Vega 0.003 Open interest 835 Model this call Put · $47.5 In the money Snapshot session Aug 6, 2026 Last $14.50 Breakeven $33.00 Implied vol 294.3% Delta -0.872 ≈87% ITM Gamma 0.028 Theta -0.436 Vega 0.005 Open interest 29 Model this put
4.3k	1	243%	0.041	$0.02		$16.70	-0.974	218.2%	150	5
Call · $50 Snapshot session Aug 17, 2026 Last $0.02 Breakeven $50.02 Implied vol 243% Delta 0.041 ≈4% ITM Gamma 0.014 Theta -0.152 Vega 0.003 Open interest 4.3k Model this call Put · $50 In the money Snapshot session Aug 7, 2026 Last $16.70 Breakeven $33.30 Implied vol 218.2% Delta -0.974 ≈97% ITM Gamma 0.011 Theta -0.09 Vega 0.002 Open interest 5 Model this put
757	2	258.6%	0.03	$0.05		$20.00	-0.937	309.1%	1	0
Call · $52.5 Snapshot session Aug 11, 2026 Last $0.05 Breakeven $52.55 Implied vol 258.6% Delta 0.03 ≈3% ITM Gamma 0.01 Theta -0.125 Vega 0.002 Open interest 757 Model this call Put · $52.5 In the money Snapshot session Jul 13, 2026 Last $20.00 Breakeven $32.50 Implied vol 309.1% Delta -0.937 ≈94% ITM Gamma 0.015 Theta -0.266 Vega 0.003 Open interest 0 Model this put
413	2	368.4%	0.076	$0.05		$15.40	-0.953	324%	4	0
Call · $55 Snapshot session Aug 5, 2026 Last $0.05 Breakeven $55.05 Implied vol 368.4% Delta 0.076 ≈8% ITM Gamma 0.015 Theta -0.376 Vega 0.003 Open interest 413 Model this call Put · $55 In the money Snapshot session May 12, 2026 Last $15.40 Breakeven $39.60 Implied vol 324% Delta -0.953 ≈95% ITM Gamma 0.012 Theta -0.224 Vega 0.003 Open interest 0 Model this put
195	2	366.4%	0.053	$0.05		$24.70	-0.956	353.3%	1	0
Call · $57.5 Snapshot session Aug 10, 2026 Last $0.05 Breakeven $57.55 Implied vol 366.4% Delta 0.053 ≈5% ITM Gamma 0.011 Theta -0.282 Vega 0.003 Open interest 195 Model this call Put · $57.5 In the money Snapshot session Jul 10, 2026 Last $24.70 Breakeven $32.80 Implied vol 353.3% Delta -0.956 ≈96% ITM Gamma 0.01 Theta -0.233 Vega 0.003 Open interest 0 Model this put
349	23	334.6%	0.024	$0.05		$27.10	-0.958	381.4%	1	0
Call · $60 Snapshot session Aug 5, 2026 Last $0.05 Breakeven $60.05 Implied vol 334.6% Delta 0.024 ≈2% ITM Gamma 0.006 Theta -0.134 Vega 0.002 Open interest 349 Model this call Put · $60 In the money Snapshot session Jul 10, 2026 Last $27.10 Breakeven $32.90 Implied vol 381.4% Delta -0.958 ≈96% ITM Gamma 0.009 Theta -0.241 Vega 0.003 Open interest 0 Model this put
71	33	401.4%	0.039	$0.05		$6.81	-0.889	537.8%	1	0
Call · $62.5 Snapshot session Jun 24, 2026 Last $0.05 Breakeven $62.55 Implied vol 401.4% Delta 0.039 ≈4% ITM Gamma 0.008 Theta -0.242 Vega 0.002 Open interest 71 Model this call Put · $62.5 In the money Snapshot session Jan 13, 2026 Last $6.81 Breakeven $55.69 Implied vol 537.8% Delta -0.889 ≈89% ITM Gamma 0.014 Theta -0.723 Vega 0.006 Open interest 0 Model this put
429	1	468%	0.058	$0.17		—	-0.962	427%	—	0
Call · $65 Snapshot session Jul 20, 2026 Last $0.17 Breakeven $65.17 Implied vol 468% Delta 0.058 ≈6% ITM Gamma 0.01 Theta -0.386 Vega 0.003 Open interest 429 Model this call Put · $65 In the money Snapshot session Unknown Last — Breakeven — Implied vol 427% Delta -0.962 ≈96% ITM Gamma 0.008 Theta -0.249 Vega 0.002 Open interest 0 Model this put
72	2	478.3%	0.048	$0.03		$11.40	-0.896	595.6%	1	0
Call · $67.5 Snapshot session Jul 20, 2026 Last $0.03 Breakeven $67.53 Implied vol 478.3% Delta 0.048 ≈5% ITM Gamma 0.008 Theta -0.343 Vega 0.004 Open interest 72 Model this call Put · $67.5 In the money Snapshot session Feb 2, 2026 Last $11.40 Breakeven $56.10 Implied vol 595.6% Delta -0.896 ≈90% ITM Gamma 0.012 Theta -0.768 Vega 0.006 Open interest 0 Model this put
138	66	436.2%	0.025	$0.05		$29.86	-0.899	622.5%	1	0
Call · $70 Snapshot session Jul 2, 2026 Last $0.05 Breakeven $70.05 Implied vol 436.2% Delta 0.025 ≈3% ITM Gamma 0.005 Theta -0.18 Vega 0.002 Open interest 138 Model this call Put · $70 In the money Snapshot session Apr 1, 2026 Last $29.86 Breakeven $40.14 Implied vol 622.5% Delta -0.899 ≈90% ITM Gamma 0.011 Theta -0.789 Vega 0.004 Open interest 0 Model this put
41	4	496.7%	0.037	$0.05		—	-0.907	629.9%	—	0
Call · $72.5 Snapshot session Jul 21, 2026 Last $0.05 Breakeven $72.55 Implied vol 496.7% Delta 0.037 ≈4% ITM Gamma 0.006 Theta -0.288 Vega 0.002 Open interest 41 Model this call Put · $72.5 In the money Snapshot session Unknown Last — Breakeven — Implied vol 629.9% Delta -0.907 ≈91% ITM Gamma 0.01 Theta -0.747 Vega 0.004 Open interest 0 Model this put
37	3	528.6%	0.04	$0.15		$42.88	-0.909	650.5%	1	0
Call · $75 Snapshot session Jun 4, 2026 Last $0.15 Breakeven $75.15 Implied vol 528.6% Delta 0.04 ≈4% ITM Gamma 0.006 Theta -0.326 Vega 0.002 Open interest 37 Model this call Put · $75 In the money Snapshot session Jun 18, 2026 Last $42.88 Breakeven $32.12 Implied vol 650.5% Delta -0.909 ≈91% ITM Gamma 0.01 Theta -0.755 Vega 0.004 Open interest 0 Model this put
19	3	546.4%	0.039	$0.35		$34.69	-0.906	683.9%	1	0
Call · $77.5 Snapshot session Jun 3, 2026 Last $0.35 Breakeven $77.85 Implied vol 546.4% Delta 0.039 ≈4% ITM Gamma 0.006 Theta -0.329 Vega 0.002 Open interest 19 Model this call Put · $77.5 In the money Snapshot session Feb 13, 2026 Last $34.69 Breakeven $42.81 Implied vol 683.9% Delta -0.906 ≈91% ITM Gamma 0.009 Theta -0.814 Vega 0.004 Open interest 0 Model this put
28	2	576.6%	0.042	$0.08		—	-0.908	703.1%	—	0
Call · $80 Snapshot session Jul 21, 2026 Last $0.08 Breakeven $80.08 Implied vol 576.6% Delta 0.042 ≈4% ITM Gamma 0.006 Theta -0.367 Vega 0.002 Open interest 28 Model this call Put · $80 In the money Snapshot session Unknown Last — Breakeven — Implied vol 703.1% Delta -0.908 ≈91% ITM Gamma 0.009 Theta -0.822 Vega 0.004 Open interest 0 Model this put
60	2	673.4%	0.061	$0.07		—	-0.911	739.9%	—	0
Call · $85 Snapshot session Jul 21, 2026 Last $0.07 Breakeven $85.07 Implied vol 673.4% Delta 0.061 ≈6% ITM Gamma 0.007 Theta -0.58 Vega 0.004 Open interest 60 Model this call Put · $85 In the money Snapshot session Unknown Last — Breakeven — Implied vol 739.9% Delta -0.911 ≈91% ITM Gamma 0.008 Theta -0.838 Vega 0.004 Open interest 0 Model this put
17	2	—	—	$0.10		$45.89	-0.971	607.6%	1	0
Call · $90 Snapshot session May 7, 2026 Last $0.10 Breakeven $90.10 Implied vol — Delta — Gamma — Theta — Vega — Open interest 17 Model this call Put · $90 In the money Snapshot session Feb 12, 2026 Last $45.89 Breakeven $44.11 Implied vol 607.6% Delta -0.971 ≈97% ITM Gamma 0.004 Theta -0.278 Vega 0.002 Open interest 0 Model this put
45	1	768.5%	0.068	$0.05		—	-0.972	637.8%	—	0
Call · $95 Snapshot session May 15, 2026 Last $0.05 Breakeven $95.05 Implied vol 768.5% Delta 0.068 ≈7% ITM Gamma 0.007 Theta -0.714 Vega 0.004 Open interest 45 Model this call Put · $95 In the money Snapshot session Unknown Last — Breakeven — Implied vol 637.8% Delta -0.972 ≈97% ITM Gamma 0.004 Theta -0.283 Vega 0.002 Open interest 0 Model this put
4	1	697%	0.036	$0.05		—	-0.919	839.2%	—	0
Call · $100 Snapshot session Jul 15, 2026 Last $0.05 Breakeven $100.05 Implied vol 697% Delta 0.036 ≈4% ITM Gamma 0.004 Theta -0.388 Vega 0.002 Open interest 4 Model this call Put · $100 In the money Snapshot session Unknown Last — Breakeven — Implied vol 839.2% Delta -0.919 ≈92% ITM Gamma 0.007 Theta -0.885 Vega 0.004 Open interest 0 Model this put
3	1	—	—	$0.05		—	-0.974	693.8%	—	0
Call · $105 Snapshot session Jul 24, 2026 Last $0.05 Breakeven $105.05 Implied vol — Delta — Gamma — Theta — Vega — Open interest 3 Model this call Put · $105 In the money Snapshot session Unknown Last — Breakeven — Implied vol 693.8% Delta -0.974 ≈97% ITM Gamma 0.003 Theta -0.294 Vega 0.002 Open interest 0 Model this put

About this data

Each contract's last price, volume, greeks, implied volatility and open interest belongs to the snapshot session shown in its details; unknown means the provider omitted the timestamp. This chain has mixed snapshot sessions · Jan 13, 2026–Aug 19, 2026; 7 unknown. Cross-contract positioning totals are shown only when every returned row has the same known session. 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. The 20 strikes around the money are shown by default — switch to "All 30" for the wings.

Key facts CIK 1617640 CUSIP 98954M101 13F (30d) 383 filings 372 filers Visit website Investor relations