What it means
At its simplest, bidding up is just competition doing its job. When several buyers each want the same asset and none of them knows the others' limits, the only way to secure it is to keep raising the offer until everyone else drops out.
The final price ends up close to the second-highest bidder's maximum valuation rather than the seller's asking price. Sellers therefore design processes specifically to create it.
Estate agents set guide prices slightly below expected value to attract a crowd, investment bankers run competitive auctions rather than exclusive negotiations when selling a company, and underwriters deliberately price share offerings to be oversubscribed. None of this is improper; it is standard practice built on the knowledge that competition, not persuasion, is what moves a price.
The danger sits with the winner rather than the seller. In an auction with many bidders, the person who wins is by definition the one who valued the asset most highly, which frequently means the one who over-estimated it most.
This is the winner's curse, and it explains why the buyer walking away from a heated auction feeling triumphant is often the one who should be worried. Emotional and structural pressures make it worse.
Bidders anchor on the last number rather than their own valuation, treat the money and time already spent on due diligence as a reason to keep going, and confuse winning the contest with winning the deal. Corporate acquirers under public pressure to complete a strategy are particularly prone to this, which is one reason takeover premiums of 20% to 40% above the undisturbed share price are common.
There is also a dishonest version worth naming clearly. Shill bidding, where a seller or an accomplice places bids with no intention of buying, is manufactured bidding up and is fraud in most markets.
Genuine bidding up depends on independent buyers acting in their own interest, and the distinction is the presence of a real intention to purchase.
In practice
Real-world examples.
Example
Two private equity firms and a trade buyer compete for a family-owned logistics business initially marketed at 6 times earnings. Four rounds of bidding push the final price to 8.2 times earnings, and the vendor's adviser earns its fee several times over on the increase alone.
Example
A biotech company's shares rise 34% in three days as two larger pharmaceutical groups publicly compete to acquire it. The eventual buyer pays a 61% premium to the undisturbed price and later writes down part of the goodwill when a trial result disappoints.
Example
A council auctions surplus land with a reserve of $1,200,000 and attracts nine registered bidders after rezoning is announced. The parcel sells for $2,050,000, and the council's finance team notes the outcome came from the rezoning news rather than anything the auctioneer did.
Formula
Calculation
Premium over asking price = (final price - asking price) / asking price x 100. Premium over independent valuation = (final price - appraised value) / appraised value x 100.
A three-bedroom house is listed at an asking price of $750,000. Five buyers register interest, and after a weekend of competing offers the property sells for $885,000.
The premium over the asking price is ($885,000 - $750,000) / $750,000 = $135,000 / $750,000 = 18%. The agent will present this as a strong result, and for the seller it clearly is.
The buyer's lender then commissions an independent appraisal, which values the property at $800,000. The buyer has paid ($885,000 - $800,000) / $800,000 = $85,000 / $800,000 = 10.6% above appraised value. Because the lender will advance 80% of the lower of price and valuation, it lends 80% x $800,000 = $640,000 rather than 80% x $885,000 = $708,000, so the buyer must find an extra $68,000 in cash.Case study
Seen in the real world.
Grantwood Foods is an illustrative, fictional mid-market food manufacturer that spent two years searching for an acquisition to add chilled distribution. When a suitable family business came to market, Grantwood's board set a walk-away price of $28,000,000, equal to 7.5 times the target's earnings, and briefed its advisers accordingly.
The sale ran as a competitive auction with four bidders. Grantwood led after the second round at $26,000,000, was outbid at $29,500,000, and after an emergency board call raised its offer to $32,000,000 and won. The chief executive's argument was that two years of searching would be wasted otherwise and that the strategy had already been announced to shareholders.
In this fictional case the integration went reasonably well, but the price did not. The extra $4,000,000 above the board's own limit represented most of the deal's projected synergies, and the acquisition took seven years rather than four to earn back its cost of capital. The board's later reform was procedural: the walk-away price is now set by the non-executive directors and can only be raised at a separate meeting held at least 48 hours after the request.
Watch out
Common mistakes.
- Treating a rising price as evidence of value. Competing bidders can all be wrong at once, and the price only reflects what two of them were willing to pay.
- Setting a walk-away limit and then revising it during the contest. A limit that moves under pressure is not a limit at all.
- Counting due diligence costs already spent as a reason to bid higher. That money is gone regardless of who wins.
Questions
People also ask.
Is bidding up the same as shill bidding?
No, genuine bidding up involves real buyers, while shill bidding uses fake bids placed by the seller or an accomplice and is fraudulent.
Does bidding up always benefit the seller?
Usually yes, though a price far above what lenders will support can cause the sale to collapse before completion.
How do buyers protect themselves?
By setting a maximum price before the process starts, based on their own valuation, and by having someone other than the deal sponsor authorise any increase.
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