Should split: How This Affects Your Equity Compensation Tax — Jul 7, 2026

What Changed

CrowdStrike executed a stock split after a 70% year-to-date gain through July 2026. The split does not alter your position value, cost basis, or tax treatment. Your share count increases, your per-share price decreases, and your total position value remains identical to the pre-split figure.

The Numbers That Matter

The split is a non-taxable event under IRC Section 1036. Your holding period carries forward uninterrupted. If you purchased shares at $200 pre-split, your adjusted basis becomes $20 per share post-split. The capital gain calculation on a future sale remains unchanged.

What This Means for Your Portfolio

On a $500K CrowdStrike position acquired at an average cost basis of $150 per share, the split increases your share count from 3,333 to 33,330 shares at $15 per share. Your unrealized gain remains $350K. If you sell 30 days post-split at the same $500K total value, you owe long-term capital gains tax on $350K. At a combined federal and net investment income tax rate of approximately 23.8% for high-income taxpayers, this produces roughly $83,300 in taxes.

The 70% run-up before the split is the relevant event. A $500K position held since January 2026 carried an entry price near $206. At $350 pre-split, that position is now worth $850K. The split does not change this gain, but it does alter liquidity mechanics for partial position trimming.

Scenario Analysis

The table assumes a $150 cost basis and a post-split price of $35. A 10% trim on a $1M position sells 2,857 post-split shares at $35, generating $100K in proceeds. With a $15 adjusted basis, the gain is $57,140. After the 23.8% blended federal capital gains rate, you net approximately $86,400 in after-tax proceeds.

Stock splits compress bid-ask spreads in dollar terms but do not improve tax efficiency. The decision to trim a position depends on your target allocation, not the share price denomination.

Why Splits Do Not Trigger Rebalancing

A stock split changes the share price, not the portfolio weight. If CrowdStrike represented 12% of your $3M portfolio before the split, it still represents 12% after. Rebalancing is triggered by price movement, not share count.

The 70% gain is the relevant signal. A position that entered the year at 8% of portfolio value now sits at 13.6% if no other holdings moved. On a $3M portfolio, that is $408K in a single equity position. For taxable accounts, trimming back to an 8% target ($240K) generates a $168K sale, which produces $95,424 in taxable gain at a $90 average cost basis. Net tax owed: $22,711 at the 23.8% rate.

The split does not reduce concentration risk. It increases the share count available for covered call strategies and makes partial lot sales more granular. On a $2M position, selling 1,000 post-split shares moves $35K instead of $350K pre-split. For tax-loss harvesting or systematic trimming, this improves execution granularity.

Implied Volatility and Options Impact

Stock splits reduce the notional value per options contract. A single call option on CrowdStrike pre-split controlled $35,000 in stock at a $350 strike. Post-split, the same contract controls $3,500 in stock at a $35 strike. Premium costs decline proportionally, but risk exposure ratios remain identical.

For covered call writers, the split allows collar strategies on smaller position slices. A $1M CrowdStrike position can now sell 285 contracts instead of 28. This increases premium collection flexibility but does not change the effective yield. At a 2% monthly premium, a $1M position generates $20K per month in covered call income whether you sell 28 contracts at $700 each or 285 contracts at $70 each.

The split does not alter implied volatility or the Greeks. Delta, gamma, and theta adjust proportionally to the new share price. Your risk exposure is unchanged.

Frequently Asked Questions

Q: Does a stock split trigger a taxable event on my existing position? A: No. The split is a non-taxable reorganization under IRC Section 1036, and your cost basis adjusts proportionally across the new share count.

Q: Should I rebalance my portfolio after a stock split? A: The split itself does not change your allocation, but the 70% gain that preceded it may have pushed the position above your target weight.

Q: Does the split improve my ability to execute tax-loss harvesting? A: Only if the position later declines and you want to harvest losses in smaller increments, as each share now represents a smaller dollar amount.

Q: How does the split affect my cost basis for future sales? A: Your total cost basis remains the same, but it is divided across the increased share count, lowering the per-share basis by the split ratio.

Run the Numbers

Use CalcMoney's Recalculate Capital Gains After Split to see your exact figures under the current tax threshold.

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Disclaimer: This article is for informational purposes only and does not constitute professional financial, investment, or tax advice. Consult with a qualified financial advisor or tax professional regarding your individual situation.

Run the Numbers: Capital Gains Tax Terminal on CalcMoney — see your exact figures under current market conditions.

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Data sourced from Major Stock Split Announcements. Rates and thresholds are for informational purposes only. Consult a licensed financial advisor before making mortgage, investment, or tax decisions.