FORM 6-K

                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549

                        Report of Foreign Private Issuer
                    Pursuant to Rule 13a - 16 or 15d - 16 of
                       the Securities Exchange Act of 1934

                        For the month of September, 2007

                                HSBC Holdings plc

                              42nd Floor, 8 Canada
                         Square, London E14 5HQ, England


(Indicate by check mark whether the registrant files or will file annual
reports under cover of Form 20-F or Form 40-F).

                          Form 20-F X Form 40-F ......

(Indicate by check mark whether the registrant by furnishing the information
contained in this Form is also thereby furnishing the information to the
Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of
1934).

                                Yes....... No X


(If "Yes" is marked, indicate below the file number assigned to the registrant
in connection with Rule 12g3-2(b): 82- ..............)


  NOTIFICATION OF TRANSACTIONS OF PERSONS DISCHARGING MANAGERIAL RESPONSIBILITY
                            AND/OR CONNECTED PERSONS


This notification relates to a transaction notified in accordance with DTR 3.1.2
R and 3.1.4 R (1)(a)


1      Name of the issuer

       HSBC Holdings plc

2      Name of the person discharging managerial responsibilities or, where
       applicable, the name of the person connected with a person discharging
       managerial responsibilities

       Gwyn Morgan, a person discharging managerial responsibilities

3      Description of shares (including class), debentures, derivatives or any
       other financial instruments relating to shares

       US$0.50 ordinary shares

4      State the nature of the transaction

       Acquisition

5      Number of shares, derivatives or any other financial instruments relating
       to shares acquired

       50,000

6      Number of shares, derivatives or any other financial instruments relating
       to shares disposed

       N/A

7      Price per share or value of transaction

       GBP8.7408

8      Date and place of transaction

       11 September 2007, London

9      Date issuer informed of transaction

       13 September 2007

10     Total holding following notification

       50,000

11     Name of duly authorised officer/official of issuer responsible for making
       notification

       Paul Stafford, Deputy Group Company Secretary, 020 7992 1509

12     Date of notification
       13 September 2007


                                    SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned, thereunto duly authorized.

                               HSBC Holdings plc

                                                By:
                                                Name:  P A Stafford
                                                Title: Assistant Group Secretary
                                                Date:  13 September 2007