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) Full name of discloser:                                     Jackson Square
                                                                Partners, LLC

(b) Owner or controller of interests and short positions
disclosed, if different from 1(a):

     The naming of nominee or vehicle companies is
insufficient.  For a trust, the trustee(s), settlor and
beneficiaries must be named.

(c) Name of offeror/offeree in relation to whose relevant       Equinix, Inc.
securities this form relates:

     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 offeror/offeree:

(e) Date position held/dealing undertaken:                      May 19, 2015

     For an opening position disclosure, state the latest
practicable date prior to the disclosure

(f)  In addition to the company in 1(c) above, is the discloser NO
making disclosures in respect of any other party to the offer?

     If it is a cash offer or possible cash offer, state "N/A"




2.         POSITIONS OF THE PERSON MAKING THE DISCLOSURE



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.



(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 STOCK



                                                        Interests      Short positions


                                                       Number      %      Number    %

(1) Relevant securities owned and/or controlled:      3,765,259   6.61



(2) Cash-settled derivatives:



(3) Stock-settled derivatives (including options) and
agreements to purchase/sell:

                                                      3,765,259   6.61

     TOTAL:




All interests and all short positions should be disclosed.



Details of any open stock-settled derivative positions (including traded
options), 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 employee options)



Class of relevant security in relation to which subscription right exists:

Details, including nature of the rights concerned and relevant percentages:





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



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.



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



(a)        Purchases and sales



Class of relevant security  Purchase/sale Number of securities  Price per unit



COMMON STOCK                PURCHASE      3,475                 $263.7346




(b)        Cash-settled derivative transactions



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






(c)        Stock-settled derivative transactions (including options)



(i)         Writing, selling, purchasing or varying



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




(ii)        Exercise



Class of relevant   Product       Exercising/       Number of   Exercise price
    security      description  exercised against   securities      per unit

                   e.g. call
                     option







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



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






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:

Irrevocable commitments and letters of intent should not be included.  If there
are no such agreements, arrangements or understandings, state "none"



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"



NONE





(c)        Attachments



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





Date of disclosure:                           May 22, 2015

Contact name:                                 Van Tran

Telephone number:                             (415) 635-0225




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 disclosure requirements on
+44 (0)20 7638 0129.

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