FactSet (FDS) Stock Concentration Calculator
Calculator · free · no signup · FDSQuantify FactSet 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 FactSet
FactSet (FDS) is a public Data company, incorporated in Delaware and headquartered in Norwalk, CT.
Last close: $285.41 per share (as of 2026-08-19).
Equity grants at FactSet typically include restricted stock units (RSUs).
FactSet Research Systems Inc., trading as FactSet, is an American financial data and software company headquartered in Norwalk, Connecticut, United States. The company provides integrated data and software. For fiscal year 2024, FactSet's total ASV and professional services revenues were $2.2 billion. FactSet's total market value is approximately $17 billion.
Source: Wikipedia (CC BY-SA 4.0)
Howard Wille and Charles Snyder started the company in 1978 to deliver financial data to analysts, and it sells a workstation and data feeds to investment banks, asset managers, and corporate finance teams. Subscriptions are annual and priced per user, so client headcount in the financial industry is close to a direct input into revenue. Competition with Bloomberg and larger data vendors is fought on content breadth and workflow integration rather than price. Retention rates in the high nineties reflect how deeply the data sits in client models. Headquarters are in Norwalk, Connecticut.
Sources: sec.gov · en.wikipedia.org
OptionsAhoy is an independent tool and is not affiliated with, endorsed by, or sponsored by FactSet.
If a meaningful share of your net worth sits in FDS, 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 FDS's option-implied volatility.
Example: 5,000 FDS shares at $285.41 is a $1,427,050 position. A 30% drawdown costs $428,115; a 50% drawdown costs $713,525; a 70% drawdown costs $998,935. The calculator quantifies the trade-off between selling down (immediate capital-gains tax) and hedging (option premium drag) using FDS's option-implied volatility and your cost basis.
All FactSet tools → · Use the generic Stock Concentration Calculator for any company. Diversifying multiple RSU lots? See the lot-by-lot sell order →
FactSet equity questions
- How much FDS 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 FDS position and weighs selling down (which triggers capital-gains tax now) against hedging (which costs option premium).
- Does FactSet grant ISOs, NSOs, or RSUs?
- Equity compensation at FactSet typically takes the form of restricted stock units (RSUs). Restricted stock units are taxed as ordinary income when they vest.
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OptionsAhoy plans your FactSet equity alongside hedging, vesting, and de-concentration, across bullish, neutral, and bearish market scenarios. Free during beta.