Onto Innovation Inc. (ONTO) 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.
Onto Innovation Inc. (ONTO) operates in the Technology sector, specifically the Semiconductors industry, with a market capitalization near $13.78B, listed on NYSE, employing roughly 1,551 people, carrying a beta of 1.70 to the broader market. Onto Innovation Inc. Led by Michael Plisinski, public since 2019-10-28.
Snapshot as of May 15, 2026.
- Spot Price
- $272.73
- Call OI
- 8.5K
- Put OI
- 4.3K
- Total OI
- 12.8K
- Put/Call Ratio
- 0.95
As of May 15, 2026, Onto Innovation Inc. (ONTO) has 12.8K total contracts outstanding across all expirations. Put/call OI ratio is 0.50 (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 ONTO open interest history Data Feeds Strategy Selection
Strategy selection on Onto Innovation Inc. 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 68.6% and dealer gamma exposure is negative, so dealer hedging amplifies directional moves. 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.
Learn how open interest is reported and how to read the data →
Frequently asked ONTO open interest history questions
- What is the current ONTO options open interest?
- As of May 15, 2026, Onto Innovation Inc. (ONTO) has 12.8K total contracts outstanding across all listed expirations, split as 8.5K calls and 4.3K 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 ONTO put/call open interest ratio?
- Put/call OI ratio of 0.50 is call-heavy, often a directional bullish or upside-speculation signal.
- What does ONTO 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.