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SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
________________
SCHEDULE 13G
(Rule 13d-102)
________________
INFORMATION TO BE INCLUDED IN STATEMENTS PURSUANT TO RULES 13d-1(b), (c)
AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO 13d-2
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(Amendment No. 1)*
Qlogic Corporation
(Name of Issuer)
Common Stock, $.10 par value
(Title of Class of Securities)
747277101
(CUSIP Number)
December 31, 1998
(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)
[X] Rule 13d-1(c)
[ ] 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 (however, see
the Notes).
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Schedule 13G/A PAGE 2 OF 12
CUSIP No. 747277101
_____________________________________________________________________________
(1) NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
VGH Partners, L.L.C.
_____________________________________________________________________________
(2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a) [ ]
(b) [x]
_____________________________________________________________________________
(3) SEC USE ONLY
_____________________________________________________________________________
(4) CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
_____________________________________________________________________________
NUMBER OF (5) SOLE VOTING POWER
0
SHARES ______________________________________________________________
BENEFICIALLY (6) SHARED VOTING POWER
26,000
OWNED BY ______________________________________________________________
EACH (7) SOLE DISPOSITIVE POWER
0
REPORTING ______________________________________________________________
PERSON WITH (8) SHARED DISPOSITIVE POWER
26,000
_____________________________________________________________________________
(9) AGGREGATE AMOUNT BENEFICIALLY OWNED
BY EACH REPORTING PERSON
26,000
_____________________________________________________________________________
(10) CHECK BOX IF THE AGGREGATE AMOUNT
IN ROW (9) EXCLUDES CERTAIN SHARES [ ]
_____________________________________________________________________________
(11) PERCENT OF CLASS REPRESENTED
BY AMOUNT IN ROW (9)
0.3%
_____________________________________________________________________________
(12) TYPE OF REPORTING PERSON
OO
_____________________________________________________________________________
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Schedule 13G/A PAGE 3 OF 12
CUSIP No. 747277101
_____________________________________________________________________________
(1) NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Vinik Partners, L.P.
_____________________________________________________________________________
(2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a) [ ]
(b) [x]
_____________________________________________________________________________
(3) SEC USE ONLY
_____________________________________________________________________________
(4) CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
_____________________________________________________________________________
NUMBER OF (5) SOLE VOTING POWER
0
SHARES ______________________________________________________________
BENEFICIALLY (6) SHARED VOTING POWER
26,000
OWNED BY ______________________________________________________________
EACH (7) SOLE DISPOSITIVE POWER
0
REPORTING ______________________________________________________________
PERSON WITH (8) SHARED DISPOSITIVE POWER
26,000
_____________________________________________________________________________
(9) AGGREGATE AMOUNT BENEFICIALLY OWNED
BY EACH REPORTING PERSON
26,000
_____________________________________________________________________________
(10) CHECK BOX IF THE AGGREGATE AMOUNT
IN ROW (9) EXCLUDES CERTAIN SHARES [ ]
_____________________________________________________________________________
(11) PERCENT OF CLASS REPRESENTED
BY AMOUNT IN ROW (9)
0.3%
_____________________________________________________________________________
(12) TYPE OF REPORTING PERSON
PN
_____________________________________________________________________________
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Schedule 13G/A PAGE 4 OF 12
CUSIP No. 747277101
_____________________________________________________________________________
(1) NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Vinik Asset Management, L.P.
_____________________________________________________________________________
(2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a) [ ]
(b) [x]
_____________________________________________________________________________
(3) SEC USE ONLY
_____________________________________________________________________________
(4) CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
_____________________________________________________________________________
NUMBER OF (5) SOLE VOTING POWER
0
SHARES ______________________________________________________________
BENEFICIALLY (6) SHARED VOTING POWER
32,300
OWNED BY ______________________________________________________________
EACH (7) SOLE DISPOSITIVE POWER
0
REPORTING ______________________________________________________________
PERSON WITH (8) SHARED DISPOSITIVE POWER
32,300
_____________________________________________________________________________
(9) AGGREGATE AMOUNT BENEFICIALLY OWNED
BY EACH REPORTING PERSON
32,300
_____________________________________________________________________________
(10) CHECK BOX IF THE AGGREGATE AMOUNT
IN ROW (9) EXCLUDES CERTAIN SHARES [ ]
_____________________________________________________________________________
(11) PERCENT OF CLASS REPRESENTED
BY AMOUNT IN ROW (9)
0.4%
_____________________________________________________________________________
(12) TYPE OF REPORTING PERSON
PN
_____________________________________________________________________________
<PAGE>
Schedule 13G/A PAGE 5 OF 12
CUSIP No. 747277101
_____________________________________________________________________________
(1) NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Jeffrey N. Vinik
_____________________________________________________________________________
(2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a) [ ]
(b) [x]
_____________________________________________________________________________
(3) SEC USE ONLY
_____________________________________________________________________________
(4) CITIZENSHIP OR PLACE OF ORGANIZATION
United States
_____________________________________________________________________________
NUMBER OF (5) SOLE VOTING POWER
0
SHARES ______________________________________________________________
BENEFICIALLY (6) SHARED VOTING POWER
58,300
OWNED BY ______________________________________________________________
EACH (7) SOLE DISPOSITIVE POWER
0
REPORTING ______________________________________________________________
PERSON WITH (8) SHARED DISPOSITIVE POWER
58,300
_____________________________________________________________________________
(9) AGGREGATE AMOUNT BENEFICIALLY OWNED
BY EACH REPORTING PERSON
58,300
_____________________________________________________________________________
(10) CHECK BOX IF THE AGGREGATE AMOUNT
IN ROW (9) EXCLUDES CERTAIN SHARES [ ]
_____________________________________________________________________________
(11) PERCENT OF CLASS REPRESENTED
BY AMOUNT IN ROW (9)
0.7%
_____________________________________________________________________________
(12) TYPE OF REPORTING PERSON
IN
_____________________________________________________________________________
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Schedule 13G/A PAGE 6 OF 12
CUSIP No. 747277101
_____________________________________________________________________________
(1) NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Michael S. Gordon
_____________________________________________________________________________
(2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a) [ ]
(b) [x]
_____________________________________________________________________________
(3) SEC USE ONLY
_____________________________________________________________________________
(4) CITIZENSHIP OR PLACE OF ORGANIZATION
United States
_____________________________________________________________________________
NUMBER OF (5) SOLE VOTING POWER
0
SHARES ______________________________________________________________
BENEFICIALLY (6) SHARED VOTING POWER
58,300
OWNED BY ______________________________________________________________
EACH (7) SOLE DISPOSITIVE POWER
0
REPORTING ______________________________________________________________
PERSON WITH (8) SHARED DISPOSITIVE POWER
58,300
_____________________________________________________________________________
(9) AGGREGATE AMOUNT BENEFICIALLY OWNED
BY EACH REPORTING PERSON
58,300
_____________________________________________________________________________
(10) CHECK BOX IF THE AGGREGATE AMOUNT
IN ROW (9) EXCLUDES CERTAIN SHARES [ ]
_____________________________________________________________________________
(11) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
0.7%
_____________________________________________________________________________
(12) TYPE OF REPORTING PERSON
IN
_____________________________________________________________________________
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Schedule 13G/A PAGE 7 OF 12
CUSIP No. 747277101
_____________________________________________________________________________
(1) NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Mark D. Hostetter
_____________________________________________________________________________
(2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a) [ ]
(b) [x]
_____________________________________________________________________________
(3) SEC USE ONLY
_____________________________________________________________________________
(4) CITIZENSHIP OR PLACE OF ORGANIZATION
United States
_____________________________________________________________________________
NUMBER OF (5) SOLE VOTING POWER
0
SHARES ______________________________________________________________
BENEFICIALLY (6) SHARED VOTING POWER
58,300
OWNED BY ______________________________________________________________
EACH (7) SOLE DISPOSITIVE POWER
0
REPORTING ______________________________________________________________
PERSON WITH (8) SHARED DISPOSITIVE POWER
58,300
_____________________________________________________________________________
(9) AGGREGATE AMOUNT BENEFICIALLY OWNED
BY EACH REPORTING PERSON
58,300
_____________________________________________________________________________
(10) CHECK BOX IF THE AGGREGATE AMOUNT
IN ROW (9) EXCLUDES CERTAIN SHARES [ ]
_____________________________________________________________________________
(11) PERCENT OF CLASS REPRESENTED
BY AMOUNT IN ROW (9)
0.7%
_____________________________________________________________________________
(12) TYPE OF REPORTING PERSON
IN
_____________________________________________________________________________
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Schedule 13G/A PAGE 8 OF 12
CUSIP No. 747277101
_____________________________________________________________________________
(1) NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Vinik Asset Management, L.L.C.
_____________________________________________________________________________
(2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a) [ ]
(b) [x]
_____________________________________________________________________________
(3) SEC USE ONLY
_____________________________________________________________________________
(4) CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
_____________________________________________________________________________
NUMBER OF (5) SOLE VOTING POWER
0
SHARES ______________________________________________________________
BENEFICIALLY (6) SHARED VOTING POWER
32,300
OWNED BY ______________________________________________________________
EACH (7) SOLE DISPOSITIVE POWER
0
REPORTING ______________________________________________________________
PERSON WITH (8) SHARED DISPOSITIVE POWER
32,300
_____________________________________________________________________________
(9) AGGREGATE AMOUNT BENEFICIALLY OWNED
BY EACH REPORTING PERSON
32,300
_____________________________________________________________________________
(10) CHECK BOX IF THE AGGREGATE AMOUNT
IN ROW (9) EXCLUDES CERTAIN SHARES [ ]
_____________________________________________________________________________
(11) PERCENT OF CLASS REPRESENTED
BY AMOUNT IN ROW (9)
0.4%
_____________________________________________________________________________
(12) TYPE OF REPORTING PERSON
OO
_____________________________________________________________________________
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Schedule 13G/A PAGE 9 OF 12
The Schedule 13G (the "Schedule 13G") initially filed on
August 3, 1998 by VGH Partners, L.L.C. ("VGH"), Vinik Partners, L.P.
("Vinik Partners"), Vinik Asset Management, L.P. ("VAM LP"), Jeffrey N.
Vinik, Michael S. Gordon, Mark D. Hostetter, and Vinik Asset Management,
L.L.C. ("VAM LLC") relating to the common stock, par value $.10 (the "Common
Stock"), issued by Qlogic Corporation (the "Company") is hereby amended by
this Amendment No. 1 to the Schedule 13G as follows:
ITEM 4. OWNERSHIP.
Item 4 is hereby amended and restated as follows:
A. Vinik Partners and VGH
(a) Amount beneficially owned: 26,000
(b) Percent of class: 0.3%
(All percentages herein are based on 8,742,481 shares of Common
Stock reported to be outstanding as of October 25, 1998, as
reflected in the Company's quarterly report on Form 10-Q filed
with the Securities and Exchange Commission by the Company for
the quarter ended September 27, 1998.)
(c) Number of shares as to which such person has:
(i) sole power to vote or to direct the vote
0
(ii) shared power to vote or to direct the vote 26,000
(iii) sole power to dispose or to direct the disposition of
0
(iv) shared power to dispose or to direct the disposition
of 26,000
Vinik Partners has the power to dispose of and the power to
vote the shares of Common Stock beneficially owned by it,
which power may be exercised by its general partner, VGH.
VGH owns directly no shares of Common Stock. By reason of
the provisions of Rule 13d-3 of the Securities Exchange Act
of 1934 (the "Act"), VGH may be deemed to own beneficially
the shares owned by Vinik Partners.
B. VAM LP and VAM LLC
(a) Amount beneficially owned: 32,300
(b) Percent of class: 0.4%
(c) Number of shares as to which such person has:
(i) sole power to vote or to direct the vote
0
(ii) shared power to vote or to direct the vote
32,300
(iii) sole power to dispose or to direct the disposition of
0
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Schedule 13G/A PAGE 10 OF 12
(iv) shared power to dispose or to direct the disposition
of 32,300
Vinik Overseas Fund, Ltd. ("Vinik Overseas") is a party to
an investment management agreement with VAM LP pursuant to
which VAM LP has investment authority with respect to
securities held in such account. Such authority includes
the power to dispose of and the power to vote securities
held in such account. Such power may be exercised by VAM
LP's general partner, VAM LLC. Neither VAM LP nor VAM LLC
owns directly any shares of Common Stock. By reason of the
provisions of Rule 13d-3 of the Act, VAM LP and VAM LLC may
each be deemed to own beneficially shares held by Vinik
Overseas.
C. Jeffrey N. Vinik, Michael S. Gordon and Mark D. Hostetter
(a) Amount beneficially owned: 58,300
(b) Percent of class: 0.7%
(c) Number of shares as to which such person has:
(i) sole power to vote or to direct the vote
0
(ii) shared power to vote or to direct the vote
58,300
(iii) sole power to dispose or to direct the disposition of
0
(iv) shared power to dispose or to direct the disposition
of 58,300
Mr. Vinik, as the senior managing member of VGH and VAM
LLC, and Messrs. Gordon and Hostetter, as managing members
thereof, have shared power to dispose of and shared power
to vote the Common Stock beneficially owned by VGH and VAM
LLC. None of Messrs. Vinik, Gordon and Hostetter directly
own any shares of Common Stock. By reason of the
provisions of Rule 13d-3 of the Act, each may be deemed to
beneficially own the shares beneficially owned by Vinik
Partners and by Vinik Overseas.
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].
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Schedule 13G/A PAGE 11 OF 12
ITEM 10. CERTIFICATION. (if filing pursuant to Rule 13d-1(c))
By signing below each Reporting Person certify that, to the best of
its 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 not held in connection with or as a participant in any transaction having
that purpose
or effect.
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Schedule 13G/A PAGE 12 OF 12
SIGNATURES
After reasonable inquiry and to the best of our knowledge and belief,
the undersigned certify that the information set forth in this statement is
true, complete and correct.
DATED: February 16, 1999 /s/ Jeffrey N. Vinik,
JEFFREY N. VINIK, individually,
as senior managing member of
VGH Partners, L.L.C., on behalf
of VINIK PARTNERS, L.P., as senior
managing member of Vinik Asset Management,
L.L.C., on behalf of VINIK ASSET
MANAGEMENT, L.P., as senior managing
member of VGH PARTNERS, L.L.C. and of
VINIK ASSET MANAGEMENT, L.L.C.
/s/ Michael S. Gordon, individually
MICHAEL S. GORDON
/s/ Mark D. Hostetter, individually
MARK D. HOSTETTER
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