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The generalized second-price auction (GSP) is a non-truthful auction mechanism for multiple items. Each bidder places a bid. The highest bidder gets the first slot, the second-highest, the second slot and so on, but the highest bidder pays the price bid by the second-highest bidder, the second-highest pays the price bid by the third-highest, and so on.
For example, if a stock price has a bid price of $100 and an ask price of $100.05, the bid-ask spread would be $0.05. The spread can also be expressed as a percentage of the ask price, which in ...
The bid–ask spread (also bid–offer or bid/ask and buy/sell in the case of a market maker) is the difference between the prices quoted (either by a single market maker or in a limit order book) for an immediate sale and an immediate purchase for stocks, futures contracts, options, or currency pairs in some auction scenario.
A bid price is the highest price that a buyer (i.e., bidder) is willing to pay for some goods. It is usually referred to simply as the "bid". In bid and ask, the bid price stands in contrast to the ask price or "offer", and the difference between the two is called the bid–ask spread. An unsolicited bid or purchase offer is when a person or ...
Ask price, also called offer price, offer, asking price, or simply ask, is the price a seller states they will accept. [1] The seller may qualify the stated asking price as firm or negotiable. Firm means the seller is implying that the price is fixed and will not change. In bid and ask, the term ask price is used in contrast to the term bid price.
A double auction is a process of buying and selling goods with multiple sellers and multiple buyers. [1] Potential buyers submit their bids and potential sellers submit their ask prices to the market institution, and then the market institution chooses some price p that clears the market: all the sellers who asked less than p sell and all buyers who bid more than p buy at this price p.
A proxy bid is an amount an individual values some item at. The online auction house will bid up the price of the item until the proxy bid for the winner is at the top. However, the individual only has to pay one increment higher than the second-highest price, despite their own proxy valuation. [12]
In a sealed-bid second-price auction, there is a SBNE with =, i.e., each bidder bids exactly his/her signal. PROOF: The proof takes the point-of-view of Xenia. We assume that she knows that Yakov bids r Y {\displaystyle rY} , but she does not know Y {\displaystyle Y} .