Quick answer: The buy-and-hold counterfactual calculates the passive portion of a premarital account’s growth by asking what the account would be worth today if the owner had simply kept the exact positions they held on the date of marriage and made no trades. That hands-off value is the passive (non-marital) result; the difference between the account’s actual value and the buy-and-hold value is the active appreciation attributable to the owner’s trading during the marriage. Unlike the market-benchmark method, it uses only the account’s own holdings — no outside index assumption.
This is a spoke of the hub on calculating marital vs. non-marital appreciation, and a natural cross-check on the reasonable-rate-of-return method.
What the method does
Florida’s §61.075(6)(a)1.b makes appreciation marital only to the extent it resulted from a spouse’s effort. The buy-and-hold counterfactual isolates that effort by holding the investment decisions constant: freeze the portfolio as it stood at the date of marriage, carry those exact shares forward to the valuation date at later prices, and see how the owner’s actual result compares.
- Passive (non-marital) = the date-of-marriage holdings, valued forward at valuation-date prices, adjusted for corporate actions.
- Active (marital) = actual ending value − buy-and-hold value.
If the owner’s trading beat simply holding, the difference is positive active appreciation. If the trading underperformed a hands-off approach, the comparison reveals that too — an important and sometimes counter-intuitive result discussed below.
The calculation, step by step
- Snapshot the date-of-marriage holdings — every position, share count, and cost context as of the marriage date.
- Adjust for corporate actions between then and the valuation date — stock splits, reverse splits, mergers, spin-offs, and symbol changes each alter share counts and must be carried through precisely.
- Value the frozen portfolio at valuation-date prices = the buy-and-hold (passive) value.
- Compare to actual: actual ending value − buy-and-hold value = active appreciation.
Illustrative example (hypothetical, no client data): An account holds shares worth $300,000 at the date of marriage. Had those exact shares simply been held — accounting for one 2-for-1 split along the way — they would be worth $430,000 at the valuation date. The account is actually worth $465,000, because the owner traded actively during the marriage. The $35,000 difference is the active appreciation from that trading; the $130,000 of buy-and-hold growth is passive.
Corporate actions are the technical heart of this method
Because the method tracks specific securities over time, the corporate-action handling has to be exact:
- A forward split (e.g., 2-for-1, 10-for-1) multiplies the share count and divides the per-share price — net value unchanged, but the arithmetic must carry through.
- A reverse split does the opposite.
- A merger or acquisition converts the old shares into cash, successor shares, or both.
- A spin-off splits one position into two.
Miss one of these and the buy-and-hold value is simply wrong. This is why I reconstruct the corporate-action history position by position rather than assuming share counts held steady.
The result that cuts against the managing spouse
Here is the instructive part: active management does not always help. If a spouse actively traded during the marriage and, in doing so, sold positions that later soared, the buy-and-hold value can come out higher than what they actually hold. In that situation the calculation proves two things at once: (1) the management was unquestionably active — which supports treating the account as subject to the marital-appreciation analysis — and (2) that active management destroyed value relative to leaving the portfolio alone.
Illustrative example (hypothetical): Suppose the same owner had instead sold a large position early in the marriage. Buy-and-hold of the date-of-marriage portfolio would be worth $520,000, but the account is actually worth only $465,000. The “active” figure is now negative $55,000 — strong evidence the spouse was an active manager, even though the activity reduced value. Whether and how that cuts for either party is for counsel to argue; my role is to calculate it accurately and let the number speak.
Strengths and limitations
Strengths: it relies only on the account’s own data with no external benchmark to contest, it is concrete and intuitive for a judge, and it is uniquely good at proving that management was active (which the threshold question often turns on).
Limitations: it is corporate-action intensive and data-hungry — you need the complete date-of-marriage holdings and an accurate action history. And, like any single method, it can produce a result that needs context (the negative-active scenario above). For those reasons I generally use it as a cross-check alongside the reasonable-rate-of-return method and direct transactional tracing, not in isolation.
When this method is the right tool
The buy-and-hold counterfactual is most persuasive when the date-of-marriage holdings are well documented, the dispute centers on the owner’s trading, and an external benchmark would be too easy to contest. It is also the method of choice when one side needs to establish that the account was actively managed — because the comparison to a frozen portfolio makes the activity undeniable.
If you are an attorney handling a Florida divorce with a premarital, gifted, or inherited investment account, Joey Friedman, CPA, P.A. prepares buy-and-hold and cross-method active-vs-passive appreciation calculations statewide.
Related resources
- Hub: Calculating Marital vs. Non-Marital Appreciation of Investment & Retirement Accounts
- Tracing Marital Assets Across Bank, Brokerage, and Crypto Accounts
- Equitable Distribution Analysis in a Florida Divorce
Frequently asked questions
What is the buy-and-hold counterfactual?
It calculates the passive portion of an account’s growth as what the date-of-marriage holdings would be worth today if simply held with no trading; the actual value minus that figure is the active appreciation.
How is it different from the market-benchmark method?
The benchmark method grows the starting value at an outside market rate; the buy-and-hold method carries the starting holdings forward at their own later prices. Buy-and-hold avoids an external index but requires precise corporate-action tracking.
Why do stock splits and mergers matter so much?
Because the method follows specific securities over time. Splits, reverse splits, mergers, and spin-offs change share counts; if they are not carried through correctly, the buy-and-hold value is wrong.
Can active trading produce a negative active appreciation?
Yes. If the owner sold positions that later rose, the buy-and-hold value can exceed the actual value — which simultaneously proves the management was active and shows it underperformed simply holding.
By Joey N. Friedman, CPA, ABV, M.Acc, MIB — President, Joey Friedman, CPA, P.A.