Rocket Lab (RKLB) Stock Concentration Calculator

Calculator · free · no signup · RKLB

Quantify Rocket Lab 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

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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.

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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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About Rocket Lab

Rocket Lab (RKLB) is a public Aerospace/Defense company, headquartered in Long Beach, CA. IPO'd Aug 25, 2021.

Last close: $104.63 per share (as of 2026-06-17).

Equity grants at Rocket Lab typically include incentive stock options (ISOs), non-qualified stock options (NSOs), and restricted stock units (RSUs).

Rocket Lab Corporation is a publicly traded aerospace manufacturer and launch service provider. Its Electron orbital rocket launches small satellites and has successfully completed over 75 missions as of January 2026, making it the most prolific small-lift launch vehicle in operation globally. A suborbital variant of Electron, called HASTE, was developed as a testbed to advance hypersonic technology development, while the next-generation reusable Neutron medium-lift launch vehicle is in development to support constellation deployment, interplanetary missions, and human spaceflight. The company is a supplier of satellite components such as star trackers, reaction wheels, solar panels, electric propulsion systems, software-defined radios, composite structures, separation systems, and electro-optical and infrared (EO/IR) sensors, as well as flight and ground software. The company also manufactures satellite buses and complete spacecraft as part of its strategic vision to become a vertically integrated, end-to-end space company.

Source: Wikipedia (CC BY-SA 4.0)

Electron, the small-lift orbital rocket that put Rocket Lab on the map, has flown 87 missions as of May 2026 from launch sites at Mahia Peninsula (New Zealand) and Wallops Island (Virginia). Founder Peter Beck started the company in New Zealand in 2006 and later relocated headquarters to Long Beach, California. Rocket Lab went public on Nasdaq under ticker RKLB in August 2021 via a SPAC merger with Vector Acquisition Corp. The company also operates the Photon spacecraft platform and is preparing Neutron, a medium-lift reusable rocket, for a late-2026 debut from Wallops.

Sources: en.wikipedia.org · nasaspaceflight.com

Equity comp at Rocket Lab

  • 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 2026-05-07.

OptionsAhoy is an independent tool and is not affiliated with, endorsed by, or sponsored by Rocket Lab.

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

Example: 5,000 RKLB shares at $104.63 is a $523,150 position. A 30% drawdown costs $156,945; a 50% drawdown costs $261,575; a 70% drawdown costs $366,205. The calculator quantifies the trade-off between selling down (immediate capital-gains tax) and hedging (option premium drag) using RKLB's option-implied volatility and your cost basis.

All Rocket Lab tools → · Use the generic Stock Concentration Calculator for any company.

Rocket Lab equity questions

How much RKLB 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 RKLB position and weighs selling down (which triggers capital-gains tax now) against hedging (which costs option premium).
Does Rocket Lab grant ISOs, NSOs, or RSUs?
Equity compensation at Rocket Lab typically takes the form of incentive stock options (ISOs), non-qualified stock options (NSOs), and restricted stock units (RSUs). Incentive stock options can trigger the alternative minimum tax (AMT) when you exercise. Restricted stock units are taxed as ordinary income when they vest.
Do Rocket Lab RSUs use double-trigger vesting?
No. Rocket Lab 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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