Zillow Group, Inc. Class C (Z) Open Interest History

Open interest tracks the total number of outstanding options contracts. Rising OI alongside price moves can indicate growing commitment to the trend; declining OI suggests positions are being closed.

Zillow Group, Inc. Class C (Z) operates in the Communication Services sector, specifically the Internet Content & Information industry, with a market capitalization near $7.49B, listed on NASDAQ, employing roughly 6,819 people, carrying a beta of 1.94 to the broader market. Zillow Group, Inc. Led by Jeremy Wacksman, public since 2015-08-03.

Snapshot as of Jun 30, 2026.

Spot Price

$31.66

Call OI

64.4K

Put OI

31.5K

Total OI

95.9K

Put/Call Ratio

2.23

As of Jun 30, 2026, Zillow Group, Inc. Class C (Z) has 95.9K total contracts outstanding across all expirations. Put/call OI ratio is 0.49 (call-heavy positioning). Open interest reflects accumulated positions from prior sessions; persistent growth indicates sustained directional or hedging interest, while sharp drops typically mean post-expiration clean-up.

How Z open interest history Data Feeds Strategy Selection

Strategy selection on Zillow Group, Inc. Class C options does not derive from any single metric in isolation. The open interest history view above sits inside a broader read: ATM IV currently sits at 59.8% and dealer gamma exposure is positive, so dealer hedging is mechanically mean-reverting. Combine the open interest history 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 Z open-interest data

The open-interest time-series above tracks the total Zillow Group, Inc. Class C options inventory outstanding day by day. OI is a stock measure - the cumulative position count - so trends flag accumulating or distributing positioning. Current put/call ratio is 2.23, put-heavy - protective or bearish positioning dominates. Total call OI of 64.4K versus put OI of 31.5K gives a put/call OI ratio of 0.49 - structurally a slower-moving signal than the volume-based ratio.

Z 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. Combined with the current positive dealer-gamma regime, large OI clusters tend to act as price magnets through expiration cycles.

Using Z 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 Z sits at 17 days, so near-dated volume currently dominates the flow reading.

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

Daily open-interest history for Z options over the last ~41 trading days. Each row reflects the end-of-day total OI summed across all listed strikes and expirations.

Most recent 15 trading days (descending). Older history appears in the chart above.

Frequently asked Z open interest history questions

What is the current Z options open interest?

As of Jun 30, 2026, Zillow Group, Inc. Class C (Z) has 95.9K total contracts outstanding across all listed expirations, split as 64.4K calls and 31.5K puts. Open interest reflects accumulated positions from prior trading sessions; it does not include today's volume until end-of-day reconciliation.

What is the Z put/call open interest ratio?

Put/call OI ratio of 0.49 is call-heavy, often a directional bullish or upside-speculation signal.

What does Z open interest tell traders?

Persistent OI growth indicates sustained directional or hedging interest; sharp drops typically mean post-expiration position cleanup. Heavy OI concentrations at specific strikes act as support and resistance levels because dealer hedging amplifies near those strikes - the gamma profile of the dealer book is concentrated there. Comparing today's volume to standing OI separates opening flow from closing flow.