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  2. Online auction - Wikipedia

    en.wikipedia.org/wiki/Online_auction

    Shill bidding is the most prominent type of online auction fraud where sellers themselves submit bids to increase the price of an item they have put up for sale, without intending to win. [25] Shill bidding is also one of the most difficult types of fraud to detect, since it is usually conducted by the seller in collusion with one or more ...

  3. Shill - Wikipedia

    en.wikipedia.org/wiki/Shill

    A shill may also act to discredit opponents or critics of the person or organization in which they have a vested interest. [1] [2] In most uses, shill refers to someone who purposely gives onlookers, participants or "marks" the impression of an enthusiastic customer independent of the seller, marketer or con artist, for whom they are secretly ...

  4. Bid rigging - Wikipedia

    en.wikipedia.org/wiki/Bid_rigging

    Leaking of bid information, which requires a relationship of some degree between the project and a bidder as the bidder is handed information to gain an unfair advantage. [4] Bid manipulation is another method for officials to choose the bidder of their choice but occurs after receipt of bids. The methods for this would include either changing ...

  5. Auction sniping - Wikipedia

    en.wikipedia.org/wiki/Auction_sniping

    Auction sniping (also called bid sniping) is the practice, in a timed online auction, of placing a bid likely to exceed the current highest bid (which may be hidden) as late as possible—usually seconds before the end of the auction—giving other bidders no time to outbid the sniper.

  6. List of bidding systems - Wikipedia

    en.wikipedia.org/wiki/List_of_bidding_systems

    This is a list of bidding systems used in contract bridge. [1] [2] Systems listed have either had an historical impact on the development of bidding in the game or have been or are currently being used at the national or international levels of competition. Bidding systems are characterized as belonging to one of two broadly defined categories:

  7. XYZ convention - Wikipedia

    en.wikipedia.org/wiki/XYZ_convention

    After an overcall by RHO, assuming that the bidding has not gone past 1NT, the convention is still on (for example after 1 ♦ - (pass) - 1 ♥ - (1 ♠) - X where X is a Support Double). The XYZ sequence that starts with 2C after 1-1-1 usually begins an invitational sequence.

  8. Heritage Auctions - Wikipedia

    en.wikipedia.org/wiki/Heritage_Auctions

    The allegation made in the lawsuit was that the company had participated in fraudulent activity by employing a "shill" bidder under the pseudonym "N.P. Gresham". This shill bidder was purportedly used to manipulate bidding prices artificially, an action claimed to be in violation of anti-racketeering laws.

  9. Mandatory offer - Wikipedia

    en.wikipedia.org/wiki/Mandatory_Offer

    In mergers and acquisitions, a mandatory offer, also called a mandatory bid in some jurisdictions, is an offer made by one company (the "acquiring company" or "bidder") to purchase some or all outstanding shares of another company (the "target"), as required by securities laws and regulations or stock exchange rules governing corporate takeovers.