SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13G

                    Under the Securities Exchange Act of 1934

				DYNAVAX TECHNOLOGIES CORP
                            -------------------------
                                (Name of Issuer)

                                  COMMON STOCK
                        --------------------------------
                         (Title of Class of Securities)

                                    268158102
                                ----------------
                                 (CUSIP Number)

                               DECEMBER 13th, 2006
            ---------------------------------------------------------
             (Date of Event Which Requires Filing of this Statement)

      Check appropriate box to designate the rule pursuant to which this
Schedule is filed:

   |_|      Rule 13d-1(b)

   |X|      Rule 13d-1(c)

   |_|      Rule 13d-1(d)

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).

- - -------------------------------------------------------------------------
1   NAME OF REPORTING PERSON
    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

    PICTET FUNDS (LUX) - BIOTECH (formerly PICTET FUNDS - BIOTECH
- - -------------------------------------------------------------------------
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                         (a) |_|
                                                                         (b) |X|
- - -------------------------------------------------------------------------
3   SEC USE ONLY


- - -------------------------------------------------------------------------
4   CITIZENSHIP OR PLACE OF ORGANIZATION

    Luxembourg
- - -------------------------------------------------------------------------
                  5    SOLE VOTING POWER

				1'950'400
                  ---------------------------------------------------------
  NUMBER OF       6    SHARED VOTING POWER
    SHARES
 BENEFICIALLY
   OWNED BY       ---------------------------------------------------------
     EACH         7    SOLE DISPOSITIVE POWER
  REPORTING
    PERSON
     WITH         ---------------------------------------------------------
                  8    SHARED DISPOSITIVE POWER


- - -------------------------------------------------------------------------
9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    1'950'400
- - -------------------------------------------------------------------------
10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                                                                            |_|
- - -------------------------------------------------------------------------
11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

    5.14%
- - -------------------------------------------------------------------------
12  TYPE OF REPORTING PERSON*

    INVESTMENT FUND
- - -------------------------------------------------------------------------
                     *SEE INSTRUCTIONS BEFORE FILLING OUT

Item 1.

      (a)   Name of Issuer: DYNAVAX TECHNOLOGIES CORP
      (b)   Address of Issuer's Principal Executive Offices:

            	2929 SEVENTH STREET
            	SUITE 100
		BERKELEY, CA 94710

		United States

Item 2.

      (a)   Name of Person Filing:

            PICTET FUNDS (LUX) - BIOTECH (formerly PICTET FUNDS - BIOTECH)

      (b)   Address of Principal Business Office or, if none, Residence:

            Luxembourg

      (c)   Citizenship: Luxembourg

      (d)   Title of Class Securities: Common Stock

      (e)   CUSIP Number: 268158102
Item 3.

      Not applicable.

Item 4. Ownership

      (a)   Amount Beneficially Owned:

            1'950'400

      (b)   Percent of Class: 5.14%.

      (c)   Number of shares as to which such person has:

(i) sole power to vote or to direct the vote:



            (ii)  shared power to vote or to direct the vote:

            (iii) sole power to dispose or to direct the disposition of:

            (iv)  shared power to dispose or to direct the disposition of:

Item 5. Ownership of Five Percent or Less of a Class

      Not applicable.

Item 6.

      Not applicable.

Item 7. Identification and Classification of the Subsidiary Which Acquired the
        Security Being Reported on By the Parent Holding Company

      Not Applicable.

Item 8. Identification and Classification of Members of the Group

      Not applicable.

Item 9. Notice of Dissolution of the Group

      Not applicable.

Item 10. Certification

      By signing below I certify that, to the best if my knowledge and belief,
      the securities referred to above were not acquired and are not held for
      the purpose of or with the effect of changing or influencing the control
      of the issuer of the securities and were not acquired and are not held in
      connection with or as a participant in any transaction having that purpose
      or effect.

                                    SIGNATURE

      After reasonable inquire and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.

                                   Date:  20th December, 2006

                                   Benoit Paquay   	Jean-Paul Steil
                                   --------------      	--------------





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