Tenable (TENB) Stock Concentration Calculator
Calculator · free · no signup · TENBQuantify Tenable 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 Tenable
Tenable (TENB) is a public Cybersecurity company, incorporated in Delaware and headquartered in Columbia, MD.
Equity grants at Tenable typically include restricted stock units (RSUs).
Tenable Holdings, Inc. is a cybersecurity company based in Columbia, Maryland. Its vulnerability scanner software Nessus, developed in 1998, is one of the most widely deployed vulnerability assessment solutions in the cybersecurity industry. As of December 31, 2023, the company had approximately 44,000 customers, including 65% of the Fortune 500.
Source: Wikipedia (CC BY-SA 4.0)
Ron Gula, Jack Huffard, and Renaud Deraison founded the company in 2002 around Nessus, the vulnerability scanner Deraison had written as an open source project in 1998 and which remains among the most widely deployed security tools anywhere. Tenable.io and Tenable One extended it into exposure management: cloud misconfiguration, identity risk, and operational technology alongside traditional scanning. The Columbia, Maryland company sells to enterprises and governments, and competes directly with Qualys and Rapid7 in a market defined by breadth of asset coverage.
Sources: tenable.com · en.wikipedia.org
Equity comp at Tenable
- 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 Tenable.
If a meaningful share of your net worth sits in TENB, 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 TENB's option-implied volatility.
All Tenable tools → · Use the generic Stock Concentration Calculator for any company. Diversifying multiple RSU lots? See the lot-by-lot sell order →
Tenable equity questions
- How much TENB 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 TENB position and weighs selling down (which triggers capital-gains tax now) against hedging (which costs option premium).
- Does Tenable grant ISOs, NSOs, or RSUs?
- Equity compensation at Tenable typically takes the form of restricted stock units (RSUs). Restricted stock units are taxed as ordinary income when they vest.
- Do Tenable RSUs use double-trigger vesting?
- No. Tenable 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.
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OptionsAhoy plans your Tenable equity alongside hedging, vesting, and de-concentration, across bullish, neutral, and bearish market scenarios. Free during beta.