Washington, D.C. 20549


Under the Securities Exchange Act of 1934

(Amendment No. 1)

PortalPlayer Inc.
(Name of Issuer)

Common Stock with a $.0001 par value per share
(Title of Class of Securities)

(CUSIP Number)

December 31, 2005
(Date of Event which Requires Filing of this Statement)

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

[  ]

  Rule 13d-1(b)

[  ]

  Rule 13d-1(c)

x Rule 13d-1(d)


*The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

The information required in 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.


(Continued on following page(s))
Page 1 of 5 Pages








CUSIP NO. 736187204


Page 2 of 5 Pages


1)           Names of Reporting persons: Canadian Imperial Bank of Commerce

I.R.S. Identification Nos. of Above Persons (entities only): 13-1942440




2)           Check the appropriate Box if a Member of a Group (See Instructions)





3)           SEC Use Only



4)           Citizenship of Place of Organization: Canada


Number of Shares Beneficially Owned by Each Reporting Person With


(5)         Sole Voting Power: -0-



(6)         Shared Voting Power: -0-



(7)         Sole Dispositive Power: -0-



(8)         Shared Dispositive Power: -0-



9)           Aggregate Amount Beneficially Owned by Each Reporting Person: -0-



10)         Check if the Aggregate Amount in Row (9) Excludes Certain Shares (see Instructions):



11)         Percent of Class Represented by Amount in Row 9: -0-



12)         Type of Reporting Person (See Instruction): HC









CUSIP NO. 736187204


Page 3 of 5 Pages


Item 1(a):

Name of Issuer:

PortalPlayer Inc.

Item 1(b):

Address of Issuer’s Principal Executive Offices:

70 W. Plumeria Drive

San Jose, CA 95134

Item 2(a):

Name of Person Filing:

Canadian Imperial Bank Commerce

Item 2(b):

Address of Principal Business Office or, if none, Residence:

199 Bay Street

Toronto, Ontario M5L 1A2


Item 2(c):



Item 2(d):

Title of Class of Securities:

Common Stock with a $.0001 par value per share

Item 2(e):

CUSIP Number:


Item 3:

Not applicable

Item 4(a):

Amount Beneficially Owned:


Item 4(b):

Percent of Class:








CUSIP NO. 736187204


Page 4 of 5 Pages


Item 4(c):

Number of Shares as to Which Such Person Has:




Sole power to vote or direct the vote:


Shared power to vote or direct the vote

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


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

Item 5:

Ownership of Five Percent or Less of a Class:

  If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following [X].

Item 6:

Ownership of More than Five Percent on Behalf of Another Person:

        Not applicable

Item 7:

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

  CIBC WMC Inc. (CO)

Item 8:

Identification and Classification of Members of the Group:

        Not applicable

Item 9:

Notice of Dissolution of Group:

       Not applicable

Item 10:


                       Not applicable





CUSIP NO. 736187204


Page 5 of 5 Pages



After reasonable inquiry 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: February 14, 2006




By:  /s/ Antonio Molestina

Name:   Antonio Molestina

Title:      Senior Vice President
               General Counsel (International)