WD-40 Company (WDFC) 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.
WD-40 Company (WDFC) operates in the Basic Materials sector, specifically the Chemicals - Specialty industry, with a market capitalization near $2.71B, listed on NASDAQ, employing roughly 714 people, carrying a beta of 0.26 to the broader market. Operating globally across the Americas, Europe, the Middle East, Africa, and the Asia Pacific, WD-40 Company specializes in manufacturing and distributing a comprehensive array of maintenance, homecare, and cleaning products. Led by Steven A. Brass, public since 1973-05-03.
Snapshot as of Sep 30, 2026.
- Spot Price
- $202.36
- Call OI
- 7.5K
- Put OI
- 423
- Total OI
- 8.0K
- Put/Call Ratio
- 0.25
As of Sep 30, 2026, WD-40 Company (WDFC) has 8.0K total contracts outstanding across all expirations. Put/call OI ratio is 0.06 (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 WDFC open interest history Data Feeds Strategy Selection
Strategy selection on WD-40 Company 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 30.7% 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 WDFC open-interest data
The open-interest time-series above tracks the total WD-40 Company 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 0.25, call-heavy - speculative or bullish positioning dominates. Total call OI of 7.5K versus put OI of 423 gives a put/call OI ratio of 0.06 - structurally a slower-moving signal than the volume-based ratio.
WDFC 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 WDFC 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 WDFC sits at 16 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 WDFC options over the last ~42 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.
| Date | Call OI | Put OI | Total OI | P/C OI |
|---|---|---|---|---|
| Sep 30, 2026 | 7.5K | 423 | 8.0K | 0.06 |
| Sep 29, 2026 | 7.5K | 413 | 7.9K | 0.06 |
| Sep 28, 2026 | 985 | 389 | 1.4K | 0.39 |
| Sep 25, 2026 | 984 | 384 | 1.4K | 0.39 |
| Sep 24, 2026 | 983 | 383 | 1.4K | 0.39 |
| Sep 23, 2026 | 976 | 396 | 1.4K | 0.41 |
| Sep 22, 2026 | 963 | 365 | 1.3K | 0.38 |
| Sep 21, 2026 | 917 | 345 | 1.3K | 0.38 |
| Sep 18, 2026 | 1.0K | 373 | 1.4K | 0.37 |
| Sep 17, 2026 | 1.0K | 372 | 1.4K | 0.37 |
| Sep 16, 2026 | 1.0K | 374 | 1.4K | 0.37 |
| Sep 15, 2026 | 991 | 366 | 1.4K | 0.37 |
| Sep 14, 2026 | 984 | 357 | 1.3K | 0.36 |
| Sep 11, 2026 | 982 | 348 | 1.3K | 0.35 |
| Sep 10, 2026 | 981 | 346 | 1.3K | 0.35 |
WDFC highest open-interest contracts
| Type | Strike | Expiration | Volume | OI | IV | Bid | Ask |
|---|---|---|---|---|---|---|---|
| CALL | $190.00 | Feb 19, 2027 | 0 | 3.1K | 37.2% | $23.40 | $28.60 |
| CALL | $185.00 | Feb 19, 2027 | 0 | 3.1K | 37.3% | $26.40 | $31.70 |
Top 2 contracts from the institutional-grade nightly options scan; ranked by oi within the broader S&P 500/400/600 + ETF universe.
Frequently asked WDFC open interest history questions
- What is the current WDFC options open interest?
- As of Sep 30, 2026, WD-40 Company (WDFC) has 8.0K total contracts outstanding across all listed expirations, split as 7.5K calls and 423 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 WDFC put/call open interest ratio?
- Put/call OI ratio of 0.06 is call-heavy, often a directional bullish or upside-speculation signal.
- What does WDFC 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.