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, 2006

                               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 INTERESTS OF DIRECTORS/PERSONS DISCHARGING MANAGERIAL
                    RESPONSIBILITY AND/OR CONNECTED PERSONS

1. Name of the issuer

HSBC Holdings plc

2. State whether the notification relates to a:

i. transaction notified in accordance with DR 3.1.4R(1)(a); or

ii. DR 3.1.4(R)(1)(b) a disclosure made in accordance with section 324 (as
extended by section 328) of the Companies Act 1985; or

iii. Both (i) and (ii):

In respect of (iii) above

3. Name of person discharging managerial responsibilities/director

D J Flint, Director

4. State whether notification relates to a person connected with a person
discharging managerial responsibilities/director named in 3 and identify the
connected person

In respect of Director

5. Indicate whether the notification is in respect of a holding of the person
referred to in 3 or 4 above or in respect of a non-beneficial interest

In respect of person named in (3) above, D J Flint

6. Description of shares (including class), debentures or derivatives or
financial instruments relating to shares

US$0.50 ordinary shares

7. Name of registered shareholder(s) and, if more than one, the number of shares
held by each of them

Turnsonic Nominees Limited 4,913
Abacus Corporate Trustee Limited 703,623
Computershare Trustees Limited Account SIP 970
D J Flint 70,429
D J Flint & F I L Flint A/C Soggs1 27,732

8. State the nature of the transactions

Acquisition / monthly contribution to HSBC Holdings UK Share Ownership Plan
holdings

9. Number of shares, debentures or financial instruments relating to shares
acquired

13 shares

10. Percentage of issued class acquired

De minimis

11. Number of shares, debentures or financial instruments relating to shares
disposed

12. Percentage of issued class disposed

13. Price per share or value of transaction

GBP9.67

14. Date and place of transactions

27 September 2006, London

15. Total holding following notification and total percentage holding following
notification

807,667

Total percentage: 0.01 per cent

16. Date issuer informed of transactions

27 September 2006

If a person discharging managerial responsibilities has been granted options by
the issuer complete the following boxes

17. Date of grant

18. Period during which or date on which exercise can be exercised

19. Total amount paid (if any) for grant of the option

20. Description of shares or debentures involved (class and number)

21. Exercise price (if fixed at time of grant) or indication that price is to be
fixed at the time of exercise

22. Total number of shares or debentures over which options held following
notification

23. Any additional information

Nicola Black, Assistant Secretary, 020 7991 2652

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

As above

Date of notification

28 September 2006



                                    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:  28 September 2006