Reverse Stock Split Calculator
Model the new share count and share price a reverse split produces, check the result against Nasdaq's minimum bid standards, and solve backward from a target price to the ratio you'd need.
Model the split
A reverse split does not change what the company is worth — it only reallocates the same market capitalization across fewer, higher-priced shares. Any hairline difference between the two figures above comes from rounding whole shares, not from a change in value.
| Ratio | Post-split price | primary | alt.* | alt.* |
|---|
How this is modeled
Post-split shares = shares outstanding ÷ ratio, rounded to the nearest whole share. Post-split price = current price × ratio. Market cap before and after are shares × price at each state — mathematically identical except for rounding, since a split reallocates value rather than creating or destroying it. The compliance table checks your post-split price against GPT.nasdaqCM.minBid ($4.00, the Nasdaq Capital Market initial listing standard) and the two alternative closing-price standards described in GPT.nasdaqCM.altBidNote ($3.00 under the Equity/Net Income standard, $2.00 under the Market Value of Listed Securities standard) — both alternatives carry separate net-tangible-asset or revenue conditions this calculator does not test, so a "clears" result there is necessary, not sufficient. The round-lot warning below the table is GPT.uplisting.reverseSplitNote rendered verbatim. This tool does not model the lower, separate continued-listing minimum bid price that already-listed companies must maintain to avoid a deficiency notice — that is a different, lower threshold than the initial-listing standard modeled here. Figures dated .
Educational estimate only, not a fairness opinion, listing guarantee, or legal advice. Nasdaq's initial listing review weighs multiple independent tests — equity, market value of publicly held shares, round-lot holders, market makers, and operating history among them — not bid price alone.
Target price → required ratio
Already know the price you need to hit? Solve backward to the ratio that gets you there.
Solve for the ratio
Exact ratio needed before rounding: 1-for-0.00. Companies almost always round up to a clean whole-number ratio so the result clears the target with a small margin instead of landing exactly on the line.
How a reverse stock split actually works
A reverse stock split consolidates existing shares into fewer shares at a fixed ratio — 1-for-10 means every ten old shares become one new share — without any cash changing hands and without the company raising or spending a dollar. Mechanically, it runs through a handful of steps: the board approves the ratio and effective date, the company amends its certificate of incorporation (in most states this requires a shareholder vote, though Delaware and several other states permit the board alone to effect a reverse split if authorized shares are reduced proportionally), and the company files the amendment with its state of incorporation.
For an OTC-traded issuer, FINRA requires advance notification of the corporate action before it can process; for an exchange-listed issuer, the exchange itself coordinates the timing. The Depository Trust Company adjusts street-name positions automatically on the effective date, so most retail holders never interact with the mechanics directly — their brokerage statement simply shows fewer shares at a proportionally higher price the next morning. Directly registered holders are handled by the transfer agent instead. Exchanges commonly append a temporary letter to the ticker symbol for a short window after the split to flag the corporate action to the market, and a new CUSIP is often (though not always) assigned.
Why companies do reverse splits
The most common driver by far is a minimum bid price standard. Nasdaq's Capital Market initial listing standard requires a $4.00 closing bid price under Rule 5505, and a company priced well below that has no path to list — or uplist from the OTC markets — without first raising its price, and a reverse split is the fastest lever available. A closely related but distinct driver is curing a continued-listing bid-price deficiency: an already-listed company whose stock trades below the exchange's lower continued-listing minimum for an extended stretch receives a deficiency notice and a cure period, and a reverse split is the standard way issuers regain compliance before that period expires.
Beyond bid-price compliance, companies use reverse splits to cut an unwieldy share count — some sub-penny stocks accumulate billions of shares outstanding, which mechanically caps the price per share and can make the stock ineligible for many institutional mandates that screen out low absolute prices regardless of market cap. A higher post-split price can also make a subsequent capital raise look less dilutive on paper, since fewer new shares are needed to raise the same dollar amount — though this is optical, not economic: the percentage dilution to existing holders is unchanged by the split itself.
What typically happens after a reverse split
This is the part worth being careful about, because the honest answer is mixed rather than reassuring. Published studies of reverse-split companies have generally found underperformance relative to peers over the one-to-three years following the split, with the effect most pronounced among smaller, financially weaker issuers doing a defensive split to avoid delisting rather than a strategic split from a position of strength. That is a statistical pattern across many companies over many years, not a prediction about any specific stock, and plenty of individual reverse splits are followed by perfectly ordinary trading.
What the split itself mechanically does is narrower than what the market sometimes reads into it: it changes the denominator, not the fundamentals. Percentage bid/ask spreads and short-term volatility often look different immediately after a split simply because the price base changed, and the action can trigger index or fund-eligibility changes in either direction depending on the price and market-cap thresholds those providers use. None of this is guidance to buy, sell, or hold a specific security — it is context for separating what a reverse split mechanically accomplishes from what the market subsequently does with the stock, which this calculator does not and cannot forecast.
How fractional shares are handled
Ratios rarely divide a real share count evenly, so every reverse split has to resolve fractional entitlements somehow. The standard approach is cash-in-lieu: the transfer agent calculates each holder's fractional share, multiplies it by a reference price (commonly the closing price on or near the effective date), and pays cash instead of issuing a partial share. A smaller number of companies round fractional entitlements up to a full share instead, most often specifically to help preserve the number of round-lot holders of record, since Nasdaq's initial listing standards separately require at least 300 round-lot holders (holders of 100 or more shares) alongside the bid-price test — a reverse split can cure the price test while accidentally pushing small holders below round-lot status, which is exactly the risk the round-lot warning in the calculator above flags.
Beneficial holders in street name typically never see the fractional mechanics directly, because their brokerage aggregates positions before applying the split and settles any fractional remainder internally. This calculator's post-split share count is a clean division rounded to the nearest whole share; the actual count your transfer agent produces will differ slightly once real fractional cash-outs are processed across your full shareholder base.
Worked example
Take the calculator's own default inputs: 40,000,000 shares outstanding at $0.35, a $14,000,000 market cap. At a 1-for-10 ratio, post-split shares fall to 4,000,000 and the price rises to $3.50 — the same $14,000,000 market cap, just redistributed. That $3.50 clears the $2.00 and $3.00 alternative closing-price standards (subject to their separate net-tangible-asset or net-income conditions) but falls short of the $4.00 primary standard, so 1-for-10 alone would not clear a Nasdaq initial listing review on bid price.
Running the same $0.35 price through the solver below with a $4.00 target returns an exact ratio of roughly 1-for-11.43, which rounds up to a practical 1-for-12 — producing a $4.20 post-split price, comfortably above the line rather than sitting exactly on it. That buffer matters in practice: Nasdaq generally wants to see the bid price sustained over an extended run of trading days before approving a listing, not simply touched once on the effective date, so issuers typically pick a ratio with headroom rather than the bare minimum.