Cerebras Systems (CBRS) Stock Concentration Calculator
Calculator · free · no signup · CBRSQuantify Cerebras Systems 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
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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.
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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 →About Cerebras Systems
Cerebras Systems (CBRS) is a public Semiconductors company, incorporated in Delaware and headquartered in Sunnyvale, CA. IPO'd May 14, 2026.
Last close: $215.08 per share (as of 2026-07-13).
IPO May 2026; wafer-scale AI compute.
Equity grants at Cerebras Systems typically include incentive stock options (ISOs), non-qualified stock options (NSOs), and restricted stock units (RSUs).
Cerebras Systems Inc., headquartered in Sunnyvale, California, develops semiconductors, supercomputers, and related software to power artificial intelligence deep-learning applications such as inference engines. Products include its wafer scale engine (WSE)-3 semiconductors, its CS-3 supercomputers, and its "AI inference cloud" and "AI training cloud" APIs, which allow users to access the company's computing power without buying its hardware. The company also builds data centers using its processors and supercomputers to provide cloud computing services directly to clients.
Source: Wikipedia (CC BY-SA 4.0)
Founded in 2016 by Andrew Feldman, Gary Lauterbach, Michael James, Sean Lie, and Jean-Philippe Fricker (the SeaMicro team that sold to AMD in 2012), Cerebras builds wafer-scale AI compute from its Sunnyvale headquarters. The flagship WSE-3 packs 4 trillion transistors onto a single TSMC 5nm wafer, powering CS-3 systems and a high-speed inference cloud. Customers include G42's Condor Galaxy supercomputers and Lockheed Martin. After CFIUS scrutiny of the G42 stake delayed its 2024 S-1, Cerebras refiled and is targeting a Nasdaq debut under CBRS.
Sources: en.wikipedia.org · cerebras.ai · finance.yahoo.com
Equity comp at Cerebras Systems
- Original S-1 filed September 2024 was paused due to CFIUS review of UAE-based G42's investment (G42 accounted for 83% of 2023 revenue and 97% of 2024 hardware sales). CFIUS clearance reportedly obtained in early 2025 but IPO remained on hold; company raised $1.1B at an $8.1B valuation. Refiled S-1 in April 2026 with G42 removed from the investor list, targeting a May 14, 2026 NASDAQ listing under ticker CBRS. Holders face a concentrated tax-withholding event at IPO (about $230M earmarked for RSU settlement obligations) after roughly 18 months of regulatory uncertainty.
- RSUs use double-trigger vesting. Two things must both happen before the shares are yours: (1) the normal time-based vesting completes, and (2) the company has a liquidity event (an IPO or an acquisition). Until both happen, you do not yet own the shares and you do not owe tax on them.
Sources: sec.gov · techstartups.com
Researched 2026-05-11.
OptionsAhoy is an independent tool and is not affiliated with, endorsed by, or sponsored by Cerebras Systems.
If a meaningful share of your net worth sits in CBRS, 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 CBRS's option-implied volatility.
Example: 5,000 CBRS shares at $215.08 is a $1,075,400 position. A 30% drawdown costs $322,620; a 50% drawdown costs $537,700; a 70% drawdown costs $752,780. The calculator quantifies the trade-off between selling down (immediate capital-gains tax) and hedging (option premium drag) using CBRS's option-implied volatility and your cost basis.
All Cerebras Systems tools → · Use the generic Stock Concentration Calculator for any company.
Cerebras Systems equity questions
- How much CBRS 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 CBRS position and weighs selling down (which triggers capital-gains tax now) against hedging (which costs option premium).
- Does Cerebras Systems grant ISOs, NSOs, or RSUs?
- Equity compensation at Cerebras Systems 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.
- When did the Cerebras Systems IPO lockup expire?
- Cerebras Systems (CBRS) went public on May 14, 2026. The standard post-IPO lockup runs 180 days, so employee and insider shares generally became sellable around November 10, 2026. Confirm against your own grant paperwork, since some lockups release early or in stages.
- Do Cerebras Systems RSUs use double-trigger vesting?
- Yes. Cerebras Systems restricted stock units (RSUs) vest only when two things both happen: the time-based schedule completes, and the company has a liquidity event such as an initial public offering (IPO) or an acquisition. Until both occur you do not own the shares and owe no tax on them.
One piece of the puzzle.
OptionsAhoy plans your Cerebras Systems equity alongside hedging, vesting, and de-concentration, across bullish, neutral, and bearish market scenarios. Free during beta.