FORM 8.3

               PUBLIC OPENING POSITION DISCLOSURE/DEALING DISCLOSURE BY            

        A PERSON WITH INTERESTS IN RELEVANT SECURITIES REPRESENTING 1% OR MORE     

                      Rule 8.3 of the Takeover Code (the "Code")                   

    1.         KEY INFORMATION

    (a) Identity of the person whose positions/dealings                                    
    are being disclosed:                                 Pentwater Capital Management LP   
                                                                                           
    (b) Owner or controller of interests and short                                         
    positions disclosed, if different from 1(a):                                           
         The naming of nominee or vehicle companies is                                     
    insufficient                                                                           
                                                                                           
    (c) Name of offeror/offeree in relation to whose                                       
    relevant securities this form relates:                      Equinix Inc                
         Use a separate form for each offeror/offeree                                      
                                                                                           
    (d) If an exempt fund manager connected with an                                        
    offeror/offeree, state this and specify identity of          N/A                       
    offeror/offeree:                                                                       
                                                                                           
    (e) Date position held/dealing undertaken:                 May 28, 2015                
                                                                                           
    (f)  Has the discloser previously disclosed, or are                                    
    they today disclosing, under the Code in respect of        Yes-Telecity Group Plc      
    any other party to this offer?                                                         

    2.         POSITIONS OF THE PERSON MAKING THE DISCLOSURE

    (a)        Interests and short positions in the relevant securities of the
    offeror or offeree to which the disclosure relates following the dealing (if
    any)

    Class of relevant security:                                Common                        
                                                                                             
                                                Interests               Short positions      
                                                                                             
                                              Number          %          Number          %   
                                                                                             
    (1) Relevant securities owned and/                                   94,212        0.16% 
    or controlled:                                                                           
                                                                                             
    (2) Derivatives (other than                                                              
    options):                                                                                
                                                                                             
    (3) Options and agreements to                                                            
    purchase/sell:                                                                           
                                                                                             
                                                                         94,212        0.16% 
         TOTAL:                                                                              

    All interests and all short positions should be disclosed.

    Details of any open derivative or option positions, or agreements to purchase
    or sell relevant securities, should be given on a Supplemental Form 8 (Open
    Positions).

    (b)        Rights to subscribe for new securities (including directors' and
    other executive options)

    Class of relevant security in relation to                                              
    which subscription right exists:                                                       
                                                                                           
    Details, including nature of the rights                                                
    concerned and relevant percentages:                                                    

    If there are positions or rights to subscribe to disclose in more than one
    class of relevant securities of the offeror or offeree named in 1(c), copy
    table 2(a) or (b) (as appropriate) for each additional class of relevant
    security.

    3.         DEALINGS (IF ANY) BY THE PERSON MAKING THE DISCLOSURE

    (a)        Purchases and sales

      Class of relevant       Purchase/sale     Number of securities     Price per unit    
          security                                                                         
                                                                                           
           Common                 Sale                  3,335               269.03 USD     
                                                                                           

    (b)        Derivatives transactions (other than options)

        Class of        Product         Nature of dealing        Number of    Price per unit
        relevant      description     e.g. opening/closing a     reference                  
        security        e.g. CFD       long/short position,      securities                 
                                    increasing/reducing a long                              
                                         /short position                                    
                                                                                            

     (c)       Options transactions in respect of existing securities

    (i)         Writing, selling, purchasing or varying

    Class of   Product      Writing,   Number of  Exercise     Type    Expiry date  Option  
    relevant description  purchasing,  securities price per    e.g.                  money  
    security  e.g. call     selling,    to which    unit    American,                paid/  
                option    varying etc.   option              European              received 
                                        relates                etc.                per unit 
                                                                                            

    (ii)        Exercising

      Class of relevant     Product description   Number of securities   Exercise price per  
          security           e.g. call option                                   unit         
                                                                                             

    (d)        Other dealings (including subscribing for new securities)

     Class of relevant       Nature of dealing             Details        Price per unit (if
         security            e.g. subscription,                              applicable)    
                                 conversion                                                 
                                                                                            

    The currency of all prices and other monetary amounts should be stated.

    Where there have been dealings in more than one class of relevant securities of
    the offeror or offeree named in 1(c), copy table 3(a), (b), (c) or (d) (as
    appropriate) for each additional class of relevant security dealt in.

    4.         OTHER INFORMATION

    (a)        Indemnity and other dealing arrangements

    Details of any indemnity or option arrangement, or any agreement or                    
    understanding, formal or informal, relating to relevant securities which may be        
    an inducement to deal or refrain from dealing entered into by the person making        
    the disclosure and any party to the offer or any person acting in concert with         
    a party to the offer:                                                                  
    If there are no such agreements, arrangements or understandings, state "none"          
                                                                                           
                                                                                           
                                                                                           

    (b)        Agreements, arrangements or understandings relating to options or
    derivatives

    Details of any agreement, arrangement or understanding, formal or informal,            
    between the person making the disclosure and any other person relating to:             
    (i)  the voting rights of any relevant securities under any option; or                 
    (ii) the voting rights or future acquisition or disposal of any relevant               
    securities to which any derivative is referenced:                                      
    If there are no such agreements, arrangements or understandings, state "none"          
                                                                                           
                                                                                           
                                                                                           

    (c)        Attachments

    Is a Supplemental Form 8 (Open Positions) attached?                    No              

       

    Date of disclosure:                         May 29, 2015                               
                                                                                           
    Contact name:                               Neal Nenadovic                             
                                                                                           
    Telephone number:                           312-589-6405                               

    Public disclosures under Rule 8 of the Code must be made to a Regulatory
    Information Service and must also be emailed to the Takeover Panel at 
    monitoring@disclosure.org.uk.  The Panel's Market Surveillance Unit is
    available for consultation in relation to the Code's dealing disclosure
    requirements on +44 (0)20 7638 0129.

    The Code can be viewed on the Panel's website at http://
    www.thetakeoverpanel.org.uk/.