497

Fidelity (logo) Investments®|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| FPCMS
82 Devonshire Street
Boston MA 02109-3614
617 563 7000

||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| December 28, 2012

U.S. Securities & Exchange Commission

100 F Street, N.E.

Washington, D.C. 20549

Attention: File Room

Re:	Fidelity Commonwealth Trust (the trust):
	Fidelity Nasdaq Composite Index Fund (the fund)
	File Nos. 002-52322 and 811-02546

__________________________________________________________________________

Ladies and Gentlemen:

Transmitted herewith for filing pursuant to Rule 497(e) under the Securities Act of 1933, as amended, are exhibits containing interactive data format risk/return summary information for supplement to the registration statement for the fund listed above. The purpose of this filing is to submit the 497 filing in XBRL for the fund.

|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||	Very truly yours,
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||	/s/ Timothy D. Pafford
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||	Timothy D. Pafford
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||	Legal Product Group

XML

Fidelity NASDAQ Composite Index Fund

Supplement to the
Fidelity^® Nasdaq Composite^® Index Fund
January 28, 2012
Prospectus

Effective January 1, 2013, the following information replaces the information under "Shareholder fees" under the heading "Fee Table" in the "Fund Summary" section on page 3.

Shareholder fees (fees paid directly from your investment)
Redemption fee on shares held less than 90 days (as a % of amount redeemed)	0.75%

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY COMMONWEALTH TRUST

Prospectus Date

rr_ProspectusDate

Jan. 28, 2012

Fidelity NASDAQ Composite Index Fund

Risk/Return:

rr_RiskReturnAbstract

Supplement [Text Block]

fct4_SupplementTextBlock

Supplement to the
Fidelity^® Nasdaq Composite^® Index Fund
January 28, 2012
Prospectus

Effective January 1, 2013, the following information replaces the information under "Shareholder fees" under the heading "Fee Table" in the "Fund Summary" section on page 3.

Shareholder fees (fees paid directly from your investment)
Redemption fee on shares held less than 90 days (as a % of amount redeemed)	0.75%

XML

Document and Entity Information	12 Months Ended
	Jan. 28, 2012
Risk/Return:
Document Type	Other
Document Period End Date	Nov. 30, 2012
Registrant Name	FIDELITY COMMONWEALTH TRUST
Central Index Key	0000205323
Amendment Flag	false
Document Creation Date	Dec. 11, 2012
Document Effective Date	Dec. 11, 2012
Prospectus Date	Jan. 28, 2012

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	FIDELITY COMMONWEALTH TRUST
Prospectus Date	rr_ProspectusDate	Jan. 28, 2012
Document Creation Date	dei_DocumentCreationDate	Dec. 11, 2012