UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 12b-25

NOTIFICATION OF LATE FILING

Check one): Form 10-K Form 20-F Form 11-K Form 10-Q Form 10-D Form N-SAR
X Form N-CSR

For Period Ended: ___03-31-06___________________________________

Transition Report on Form 10-K
Transition Report on Form 20-F
Transition Report on Form 11-K
Transition Report on Form 10-Q
Transition Report on Form N-SAR
For the Transition Period Ended: _________________________________

Read Instruction (on back page) Before Preparing Form. Please Print or Type.
Nothing in this form shall be construed to imply that the Commission
      has verified any information contained herein.
If the notification relates to a portion of the filing checked above,
identify the Item(s) to which the notification relates:
____________________________________________________________
PART I  REGISTRANT INFORMATION
____________________________________________________________
Full Name of Registrant  Nicholas-Applegate Investment Trust

____________________________________________________________

Former Name if Applicable
____________________________________________________________
Address of Principal Executive Office (Street and Number)
600 W. Broadway, 30th Floor, San Diego, CA  92101
____________________________________________________________
City, State and Zip Code


PART II  RULES 12b-25(b) AND (c)

If the subject report could not be filed without unreasonable effort or
expense and the registrant seeks relief pursuant to
Rule 12b-25(b), the following should be completed.
(Check box if appropriate)

(a) The reason described in reasonable detail in Part III of this
form could not be eliminated without unreasonable
effort or expense

X (b) The subject annual report, semi-annual report, transition report
on Form 10-K,  Form 20-F, Form 11-K, Form N-SAR or Form N-CSR,
or portion thereof,  will be filed on or before the fifteenth calendar day
following the prescribed due date;
or the subject quarterly report or transition
report on Form 10-Qorsubject distribution reporton Form 10-D,
or portion thereof,
will be filed on or before the fifth calendar day following the
prescribed due date; and

(c) The accountant's statement or other exhibit required by
Rule 12b-25(c) has been attached if applicable.

PART III  NARRATIVE

State below in reasonable detail why Forms 10-K, 20-F, 11-K, 10-Q,10-D, N-SAR,
N-CSR, or the transition report or
portion thereof, could not be filed within the prescribed time period.

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SEC FILE NUMBER 811-07384

CUSIP NUMBER

2
(Attach extra Sheets if Needed)

PART IV  OTHER INFORMATION
(1) Name and telephone number of person to contact in
regard to this notification

John C. Smith II   (617)772-1563
_________________________________________
(Name) (Area Code) (Telephone Number)

(2) Have all other periodic reports required under Section 13 or 15(d)
of the Securities Exchange Act of 1934 or Section
30 of the Investment Company Act of 1940 during the preceding 12 months
or for such shorter period that the registrant
was required to file such report(s) been filed ?
If answer is no, identify report(s). Yes No
_______________________________________________________
(3) Is it anticipated that any significant change in results of operations
from the corresponding period for the last fiscal
year will be reflected by the earnings statements to be included in the subject
report or portion thereof ?
Yes No

If so, attach an explanation of the anticipated change, both narratively
and quantitatively, and, if appropriate, state the
reasons why a reasonable estimate of the results cannot be made.

Nicholas-Applegate Investment Trust
________________________________________________
(Name of Registrant as Specified in Charter)

has caused this notification to be signed on its behalf by the undersigned
hereunto duly authorized.

Date:  June 9, 2006

By: /s/ John C. Smith II
Assistant Treasurer