As far as I know, it shouldn't happen, a company shouldn't have that much cash to be able buy all of its shares, because the share price should indicate that the company has that much cash in the first place - but let's suppose it happens (e.g. the company takes out a huge enough loan to buy back all of its shares or the share price is exceptionally low due to some perceived risk). What would happen in this case, who would own the company?

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    Note the huge difference between the CEO or some other person or group within the company buying all shares, or the company itself buying them all. Several answers missed that difference.
    – Aganju
    Commented Jul 17, 2019 at 21:27
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    @Aganju - Good point. I thought immediately of how Michael Dell boughtout the public stockholders. The company still exists, but is now back to being private.
    – BruceWayne
    Commented Jul 17, 2019 at 21:30
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    I still don't understand: If a company buys all its shares and there is capital left, who owns that capital? Commented Jul 18, 2019 at 9:29
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    This question has invoked a lot of opinions and guesses of how company ownership actually operates. This question might be better suited for law.stackexchange to inquire about how company share ownership works as a legal groundwork.
    – Shorlan
    Commented Jul 18, 2019 at 22:39
  • 3
    How can this happen, why would the entity with the last share, owning the whole company and with a complete controlling interest in the company sell that share or, even instruct the company to do that?
    – Jodrell
    Commented Jul 19, 2019 at 7:51

9 Answers 9


This is a great question. The correct answer is that a buyback of all shares is a liquidation. If there are zero shares, this can only mean the company no longer exists. Note that in normal (partial) buybacks, the company shrinks in value. The natural extreme of this is that the company disappears.

If the company is undervalued on the market compared to what it can liquidate its net assets for, the shareholders might pursue liquidation. However, there is unlikely to be a big profit in liquidation because other investors would have bid up the shares on the market based on the same idea.

On the other hand, if the company's net assets are insufficient to buy back all shares, the suggestion of borrowing money won't help, because all company debts have to be paid off as part of liquidation. There are laws against a company distributing assets to shareholders, retaining debts, and leaving the company insolvent (an abuse of its limited liability status).

Generally, healthy companies have a market value well above their liquidation value due to their future potential. This is the market telling them it would be irrational to liquidate. They may still want to pursue partial buybacks when they have some excess assets that aren't contributing strongly to profits and are better distributed to shareholders.

Ben Voigt had an interesting comment:

Mathematics forbids it. The sum of all shares must add to 100%. That 100% can be split fewer ways, but it cannot be split zero ways. When you get down to one share outstanding, that share represents ownership of the entire company. There is nothing the company can offer that final shareholder in exchange for his share, because anything it could offer, he already owns. Share buybacks are like reverse splits -- they result in concentration of ownership, not elimination of it.

This sounds compelling but gives a misleading impression. Reverse splits increase the value of each share and do not shrink the company. Buybacks do shrink the company as money flows out of the treasury. If the liquidation value is $50 per share, then at the point when that last share is notionally being bought out, the company has just $50 left. The company provides 100% of its assets (the whole $50) to redeem that last share, and in the process it ceases to exist.

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    I don't see any conflict between your example and my statement "There is nothing the company can offer that final shareholder in exchange for his share, because anything it could offer, he already owns." The company ceases to exist when it is disincorporated. If it is still incorporated, then it means nothing to "redeem that last share (certificate)" because the shareholder owned 100% of the company before, and 100% after. No transaction happened.
    – Ben Voigt
    Commented Jul 17, 2019 at 20:41
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    Couldn't a company buy the last shares without the last shareholders knowing what the value of their last share is? I.e. the company is worth 2000$ but the last shareholder thinks it is only worth 50$, so he sells it for that price? Commented Jul 17, 2019 at 21:35
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    @nanoman Why do you assume a liquidation is necessary for a total buyback? Otherwise, why is all the talk about liquidation relevant in a theoretical sense?
    – jpaugh
    Commented Jul 18, 2019 at 0:39
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    @BenVoigt (also Echox) Ben's comment is in some ways correct, but the notional last shareholder (who owns the whole company) owns the remaining assets of the company indirectly, whereas after the liquidation completes, that person owns the assets directly and the company owns nothing. That is why it's a meaningful transaction, and someone might well prefer to just have the money in their pocket rather than have the headache of managing a corporation. In practice, the liquidation would proceed uniformly on agreed terms and no one would care if they were the "last" shareholder or not.
    – nanoman
    Commented Jul 18, 2019 at 2:27
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    @jpaugh A corporation, by definition, is owned by one or more parties (shareholders) and has at least one share of stock outstanding as the mechanism for this ownership. So the only way all outstanding shares could disappear is as part of a process in which the corporation itself disappears.
    – nanoman
    Commented Jul 18, 2019 at 2:40

I found the answer in Wikipedia: if a company buys back its own share, it's called treasury stock and "Total treasury stock can not exceed the maximum proportion of total capitalization specified by law in the relevant country", so it's an actual law that forbids companies buying back all of their shares. Also treasury stock do not have voting rights, so management cannot wrestle control from ownership by buying back shares.

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    Actually, management can take control by buying back shares - if the actual managers buy them rather than the company itself. Facebook is a good example: its CEO owns personally more than 50% of voting rights - but there are other shares outstanding.
    – Aleks G
    Commented Jul 18, 2019 at 10:59
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    Facebook is a bad example: it's not the Facebook company, but a person called Zuckerberg that owns 50+% voting rights. He is actually the CEO too (he's got controlling ownership, so can appoint anyone (including himself) as CEO), but he's controlling the company because he owns (most of) it. A CEO can buy the company he's managing (from his own money, and from company funds), but it's not a buyback. Commented Jul 18, 2019 at 11:21
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    That's exactly the distinction I am making: buyout by the company vs buyout by the management.
    – Aleks G
    Commented Jul 18, 2019 at 11:30
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    @AleksG But that's still not buyout by the management - just buyout by a private owner, who also happens to be a manager. If an IBM manager buys a sandwich, was the sandwich bought by "IBM Management"? To say it was bought by the management, it would need to be bought in their capacity as managers (e.g. provisions for a meeting), rather than as private investment (e.g. I was hungry, and bought a sandwich). The manager cannot use the company's money/assets to wrestle control from the owners. What he does with his own private capital is a different matter entirely.
    – Luaan
    Commented Jul 19, 2019 at 12:52
  • This is the correct answer: it is just not allowed. I can incorporate a company and own the only share. I can then inject $50 cash in it. Equity is then $50 (my share), assets are $50 (the cash). I could in theory sell that share to the company treasury for $5. Sure it's a less-than-arm's length transaction, but who cares? No law of mathematics "forbids" it. But country laws do. If it were allowed, the company would simply become a non-profit with $45 in assets. The company would have to reinvest all of its profits (if any) into whatever it does since it won't have anyone to pay dividends to.
    – Pertinax
    Commented Nov 13, 2021 at 1:44

Ignoring regulation, how would this actually happen?

Imagine a company had a market cap of $100 million. Obviously, that market cap includes any cash on hand, so no company could afford to buy its own stock with its own money.

But let's say the company first borrowed $100 million. Now it has $100 million in cash on hand and a debt of $100 million, so the value of the company is unchanged (disregarding any change in value caused by its new liquidity or its new debt ratio).

So now it could buy back, and effectively extinguish all its outstanding stock. Which raises two questions:

  1. Why would any bank or financier lend a company an amount equal (or even remotely close to) its market cap?
  2. But assuming we could locate such a zestfully incautious lender, what would this company be now?

It's now, in some sense, a non-profit: if the company had any money left over after business operations (and of course, as Acccumulation points out in the comments, after paying back its fortunate lender), it would have no one to distribute to. But unlike real non-profits, it wouldn't have a board of directors or any way to have stockholder referenda.

This seems like the business equivalent of a black hole, collapsing into a singularity, and no normal rules apply. Which is probably somewhere way down on the list of reasons that regulations forbid it.

  • It doesn't seem that impossible in theory to me. Imagine a company that is almost useless, so it is valued at assets + X for some fairly insignificant X. Then it only has to find someone careless enough to lend it X, rather than the whole value.
    – rlms
    Commented Jul 18, 2019 at 17:06
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    "It's now, in some sense, a non-profit: if the company had any money left over after business operations, it would have no one to distribute to." Yes it would: the bondholders. The company still has to pay back the bonds, and if it fails to do so, then it goes bankrupt, and the bondholders can claim ownership. Commented Jul 18, 2019 at 17:11
  • @Acccumulation -- payments to bondholders are not considered profits. They are part of EBITDA (as amortization and interest), but not net income. Commented Jul 19, 2019 at 2:48
  • @rlms -- no, you would need assets + X from the lender, because you cannot buy stock with "assets" (except cash assets). Commented Jul 19, 2019 at 2:50
  • You can sell assets for cash.
    – rlms
    Commented Jul 20, 2019 at 15:25

A company doesn't manage itself, its shareholder do. Therefore a company cannot buy its own shares. Think of a car: what happens when a car pays its loan to the bank?

What can happen instead is one shareholder buying out all the shares and becoming a single owner. This is not unheard of.

  • But, as opposed to a car, a company is a legal entity capable of committing to contracts and owning things in its own right. And it is not managed by its shareholders, but by managers appointed (or otherwise authorized) by shareholders. Commented Jul 26, 2019 at 12:42
  • @AlexanderKosubek A car is also not driven by the owner but by the driver, and the driver has no business paying the car loan unless they are also the owner. I know that no comparison is perfect. Commented Jul 26, 2019 at 12:58

Realistically, that isn't what would happen, quite.

To start, there will be insiders who hold a significant number of shares.

As such, they elect a fraction of Board members. They will encourage the Board to instruct management to do stock buy-backs. These insiders do not cooperate: they do not sell their shares.

As a result, with fewer total shares in circulation, the insiders now have a larger fraction of total shares.

When their fraction of ownership becomes >50%, they control the Board. They can press on with the stock buybacks even if it injures the company to do so. They can make decisions that poison the company for other investors, (e.g. do something horrible so the "green" mutual funds all drop them). The only thing that might stop them is a lawsuit from a minority shareholder saying they are damaging the company.

The endgame here is that this "club" of insider shareholders, as well as possibly a determined dissident or two, are the only shareholders remaining. This ends public trading. Now it is a privately owned company.

If everyone sells out to one stockholder, then we have arrived at your destination.

Let's go further. They decide they want no shareholders at all. The shareholders vote to change their mission to one compatible with a

  • cooperative (co-op, like a condo association or power cooperative)
  • trade association (like NEMA, NFPA, API, NRA etc.)
  • charitable organization (like a for-profit makerspace converting to nonprofit because for-profit was the wrong business model looking at you TechShop, or a commercially defunct industry converting into a museum of itself (say, East Broad Top Railroad or the British canal system).

Then they simply get shareholders to agree, buy out dissenters, and file the requisite paperwork. They are now "owned" by Kathy Jennings, in her capacity as the Attorney General of Delaware, since they surely incorporated there.

In that case, they answer to her, and Board members are elected either by a) other board members, or b) Members (one member one vote), or c) Shareholders (one share one vote). Membership or shares are allocated on some fair basis, e.g. in a condo association based on assessed value.

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    Right... the elimination of ownership is not accomplished by having 100% treasury stock, but by changing the bylaws.
    – Ben Voigt
    Commented Jul 19, 2019 at 21:55
  • I find it humorous that this answer alludes to the fact that the real answer sort of is, "Kathy Jennings, without any action or cost on her part, now owns the company."
    – user12515
    Commented Apr 5, 2021 at 4:38
  • @Michael attorneys general are used to this. Commented Apr 5, 2021 at 6:46

I think there would be regulations that prohibit such things. Plus even if it's isn't the case, practically it's not possible.

One can create a trust that may be similar... Essentially one needs to think how board of directors are appointed or removed. I.e the role that share holders play... This includes salaries to director etc,

A trust can be established in similar manner with trustee... Long lasting trusts put generic trems as to who all will be trusties... Say local elected congressman or municipal commissioner etc


When a corporation is formed, a shareholder agreement is established with a structure for how shares are divvied up for ownership. A portion of these shares are jointly company-owned and can be used to raise capital in exchange for partial ownership in the company itself.

When a corporation buys back its own shares, it is simply removing them from general circulation in the stock market, and taking back ownership of them. Even with all of its public shares bought back, the company still exists, the shareholder agreement is still intact, the company has simply become private and will be delisted from the exchange, as no one can trade it on the open market. The company is still owned, and operated as normal, except now there are no general shareholders sharing ownership in the company.

Even after going private, shares can still be traded, exchanged, and restructured by the owners as needed; but a company will never have no shares at all, until a company is dissolved at the final stage of liquidation.

  • 1
    If I understand you right, the key point here is that the last public share can be bought back only if there are also private shares outstanding, because the private company must be owned by someone.
    – IMSoP
    Commented Jul 19, 2019 at 12:16

The company doesn't buy back all the shares. A person or group of people buy all the shares. It is also possible that another company buys all the shares, thus company X now owns company Y.

In all cases somebody owns the shares. If the number of investors is small then the company is considered as a private company.

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    If the number of investors is small then the company is considered as a private company - I've always wondered about that, but I'd assumed the difference between "private" and public was whether or not the shares were traded on an exchange the public could access. Is it more typically based on the number of investors?
    – dwizum
    Commented Jul 17, 2019 at 13:16
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    "The company doesn't buy back all the shares." My question is about what happens if it does? I understand that it's highly unlikely - or is a law that forbids it? Commented Jul 17, 2019 at 14:24
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    @user2414208: Mathematics forbids it. The sum of all shares must add to 100%. That 100% can be split fewer ways, but it cannot be split zero ways. When you get down to one share outstanding, that share represents ownership of the entire company. There is nothing the company can offer that final shareholder in exchange for his share, because anything it could offer, he already owns. Share buybacks are like reverse splits -- they result in concentration of ownership, not elimination of it.
    – Ben Voigt
    Commented Jul 17, 2019 at 14:40
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    @AlexanderKosubek said "Buying half the shares back doesn't give the other half a higher voting share" but it does. If there are half as many shares outstanding, half as many shares are required to carry any particular proposal during shareholder votes. From investopedia: "...repurchased shares are absorbed by the company, and the number of outstanding shares on the market is reduced. When this happens, the relative ownership stake of each investor increases because there are fewer shares, or claims, on the earnings of the company."
    – Ben Voigt
    Commented Jul 17, 2019 at 15:11
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    @BenVoigt I don't claim you're wrong, but what explicit rule or regulation makes a company incapable of being its own shareholder? - The source you quote goes on to say that "Once a company purchases its shares, it often cancels them [...] and reduces the number of shares outstanding, in the process." Often does not mean always. What rule makes it impossible for the CEO (or legislation specific equivalent) to vote on behalf of all the share the company holds, effectively making the company its own shareholder? Commented Jul 17, 2019 at 15:20

It does happen:

Outback goes private. A private equity firm bought the company, paid all the shareholders, and took it private. A few years later they IPO'd it for an enormous profit. However, they didn't have to; they could have kept it private.

  • Is it still an IPO (initial public offering) if the company was previously already public?
    – yoozer8
    Commented Jul 17, 2019 at 12:14
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    Yes it was, as it was a new company.
    – Pete B.
    Commented Jul 17, 2019 at 12:27
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    Pete, in this case a private equity firm bought Outback, but OP is asking about how Outback could have bought itself.
    – RonJohn
    Commented Jul 17, 2019 at 12:32
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    The OP is talking about the company itself buying back all the shares. In your example, the private equity firm (not he company itself) bought the shares.
    – Lawrence
    Commented Jul 17, 2019 at 12:32
  • Whether it's an IPO or something else is really a separate question, independent of the company buying back all its shares in the first place.
    – chepner
    Commented Jul 17, 2019 at 13:14

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