BlackLine (BL) Stock Concentration Calculator

Calculator · free · no signup · BL

Quantify BlackLine 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

Default. Adjust to test.
35%
Default. Adjust to test.
20%
10%

Tax

67%
Highly concentratedLong-term
If 30% drop
−$150,000
If 50% drop
−$250,000
If 70% drop
−$350,000

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).

Tax
Wealth (3y)$956,485
+$33,417 vs.

Tax
Wealth (3y)$994,174
+$71,106 vs.

Tax
Wealth (3y)$1.04M
+$112,490 vs.

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.

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Toggle below — chart updates live. Sell buttons show the slice.
Sell over 1 yearSell over 2 yearsSell over 3 yearsCustom
$712,500$815,995$919,489$1,022,984$1,126,478Yr 0Yr 1Yr 2Yr 3
Year 1
Year 2
Year 3
Tax$200,753
Hedge cost$37,676
Wealth at Y3$1,046,371
Vs. best fixed plan+$10,813

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.

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Related calculators: Protect Your Stock Calculator · RSU Lot Order Calculator · Equity Funding Plan Calculator

About BlackLine

BlackLine (BL) is a public Vertical SaaS company, incorporated in Delaware and headquartered in Woodland Hills, CA.

Equity grants at BlackLine typically include restricted stock units (RSUs).

BlackLine Systems, Inc., is an American enterprise software company that develops cloud-based services designed to automate and manage the entire financial close process as well as consolidation, invoice-to-cash, and intercompany accounting. The Los Angeles–based company has 17 offices worldwide.

Source: Wikipedia (CC BY-SA 4.0)

Therese Tucker founded the company in 2001 and bootstrapped it for years, selling software that automates the financial close: account reconciliations, journal entries, and variance analysis that accounting teams otherwise run on spreadsheets. Sarbanes-Oxley controls made documented, repeatable close processes mandatory, which is the demand driver. SAP resells the product under a partnership that supplies a meaningful share of new business. Headquarters are in Woodland Hills, California, and customers are mid-market through large enterprise finance departments.

Sources: blackline.com · en.wikipedia.org

Equity comp at BlackLine

  • 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 BlackLine.

If a meaningful share of your net worth sits in BL, 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 BL's option-implied volatility.

All BlackLine tools → · Use the generic Stock Concentration Calculator for any company. Diversifying multiple RSU lots? See the lot-by-lot sell order →

BlackLine equity questions

How much BL 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 BL position and weighs selling down (which triggers capital-gains tax now) against hedging (which costs option premium).
Does BlackLine grant ISOs, NSOs, or RSUs?
Equity compensation at BlackLine typically takes the form of restricted stock units (RSUs). Restricted stock units are taxed as ordinary income when they vest.
Do BlackLine RSUs use double-trigger vesting?
No. BlackLine 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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