Onto Innovation (ONTO) Stock Concentration Calculator
Calculator · free · no signup · ONTOQuantify Onto Innovation concentration risk. Drawdown impact at 30 / 50 / 70%, with the tax-aware trade-off between selling down and hedging.
Beta · invite-only · AlphaLatitude Inc. · Free Tools
Your inputs
Adjust — results update instantly.Position & portfolio
Tax
Most fee-only advisors target ≤10% in any single name. You're at 67%.
Estimates only. Not financial advice.
Most sensitive to: Expected market return (±10% on this input swings best-plan wealth by ±$190,508).
Cost of fully de-concentrating
All three plans sell to 0% (no hedge).Sensitivity. If your expected position return drops below 19.6%/yr, lump-sum (sell everything today) beats every spread plan above.
Have multiple RSU vest lots? The RSU Lot Order Calculator picks which lots to sell first, and on which dates, to divest at the lowest computed tax.
Build your own plan
Toggle below — chart updates live. Sell buttons show the slice.Tech / Software single names hit a 50%+ peak-to-trough drawdown in roughly 1 of every 5 rolling 3-year windows over 2014–2024. Even mega-caps aren’t exempt.
Tax brackets: 2026 · Estimates only — not financial advice.
Estate note. Heirs receive a stepped-up basis at death (§1014), eliminating built-in gain on inherited shares. Older holders who plan to bequeath rather than sell may rationally never de-concentrate.
You sized one position's risk. The beta integrates hedging, sell-down, and tax timing into one optimized plan.
Request beta access →Related calculators: Protect Your Stock Calculator · RSU Lot Order Calculator · Equity Funding Plan Calculator
About Onto Innovation
Onto Innovation (ONTO) is a public Semiconductors company, incorporated in Delaware and headquartered in Wilmington, MA.
Equity grants at Onto Innovation typically include restricted stock units (RSUs).
Onto Innovation Inc. is an American semiconductor company formed in 2019 from the merger of Rudolph Technologies, Inc. and Nanometrics Incorporated. It is a provider of process and process control equipment and software for microelectronic manufacturing industries.
Source: Wikipedia (CC BY-SA 4.0)
Rudolph Technologies and Nanometrics merged in 2019 to form the company, combining process control metrology with inspection and lithography systems for advanced packaging. Its instruments measure film thickness, overlay, and defects during manufacture, and the advanced packaging exposure has grown as chipmakers stack and bond dies rather than shrink transistors alone. That places it alongside KLA in process control, though at a fraction of the size. Headquarters are in Wilmington, Massachusetts.
Sources: ontoinnovation.com · en.wikipedia.org
Equity comp at Onto Innovation
- RSUs use single-trigger vesting: shares become yours as each portion vests on schedule, and the value is taxed as ordinary income at that point. No IPO or acquisition is required.
Researched 2026-08-17.
OptionsAhoy is an independent tool and is not affiliated with, endorsed by, or sponsored by Onto Innovation.
If a meaningful share of your net worth sits in ONTO, concentration risk is the question. This calculator quantifies drawdown impact at 30 / 50 / 70%, and the trade-off between selling down (tax cost now) versus hedging (option premium drag), auto-filled with ONTO's option-implied volatility.
All Onto Innovation tools → · Use the generic Stock Concentration Calculator for any company. Diversifying multiple RSU lots? See the lot-by-lot sell order →
Onto Innovation equity questions
- How much ONTO stock is too much?
- There is no single threshold, but the larger the share of your net worth in one stock, the more a single bad year can set back your plans. The calculator above quantifies the drawdown impact at 30, 50, and 70 percent for your ONTO position and weighs selling down (which triggers capital-gains tax now) against hedging (which costs option premium).
- Does Onto Innovation grant ISOs, NSOs, or RSUs?
- Equity compensation at Onto Innovation typically takes the form of restricted stock units (RSUs). Restricted stock units are taxed as ordinary income when they vest.
- Do Onto Innovation RSUs use double-trigger vesting?
- No. Onto Innovation restricted stock units (RSUs) use single-trigger vesting: each tranche becomes yours as it vests on schedule, taxed as ordinary income at that point, with no liquidity event required.
Find another companySemiconductors peers
One piece of the puzzle.
OptionsAhoy plans your Onto Innovation equity alongside hedging, vesting, and de-concentration, across bullish, neutral, and bearish market scenarios. Free during beta.