EXHIBIT 99

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
06/2001 DISTRIBUTION REPORT

SERIES: pncms 2001-1 WEIGHTED AVERAGE PC RATE: 7.78514%

POOL NUMBER: 1697

____________________________________________________________________________________________

ISSUE DATE: 01/30/2001

CERTIFICATE BALANCE AT ISSUE: $245,740,542.00

CERTIFICATE

TOTAL ACCOUNT CERTIFICATE

NUMBER OF ACTIVITY BALANCE

MORTGAGES (@PC RATE) OUTSTANDING

_________ __________________ __________________

BALANCES FROM LAST FISCAL MONTH-END: 549 $213,295,081.64

PRINCIPAL POOL COLLECTION(S):

Scheduled Principal Collection Due Current Month $135,418.39

Unscheduled Principal Collection/Reversals $346,683.83

Liquidations-in-full 32 $11,894,150.02

Net principal Distributed $12,376,252.24 ($12,376,252.24)

CAPITAL LOSS (PRINCIPAL WRITTEN OFF): $0.00

BALANCE CURRENT FISCAL MONTH-END: 517 $200,918,829.40

SCHEDULED INTEREST AT MORTGAGE RATE: $1,517,751.14

UNSCHEDULED INTEREST AT MORTGAGE RATE:

Unscheduled Interest Collection/Reversals $0.00

Interest Uncollected on Liquidation $0.00

Interest Uncollected on Non-Earning Assets $0.00

Net Unscheduled Interest Distributed $0.00

OTHER:

Loan Conversion Fees $0.00

Expense Reimbursements $0.00

Gain on Liquidations $0.00

Hazard Insurance Premium Refunds $0.00

Net Other Distributions $0.00

SCHEDULED SERVICING FEE EXPENSES: $134,203.88

UNSCHEDULED SERVICING FEES:

Unscheduled Service Fee Collections/Reversals $0.00

Servicing Fees Uncollected on Liquidation $0.00

Servicing Fees Uncollected/Non-Earning Assets $0.00

Net Unscheduled Service Fees Distributed $0.00

MISCELLANEOUS EXPENSES: $0.00

NET FUNDS DISTRIBUTED: $13,759,799.50

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.

MASTER SERVICING

MORTGAGE PASS-THROUGH CERTIFICATES

06/2001 DISTRIBUTION REPORT

SERIES: pncms 2001-1 WEIGHTED AVERAGE PC RATE: 7.78514%

POOL NUMBER: 1697

____________________________________________________________________________________________

AGGREGATE LOSS AMOUNTS FROM INCEPTION OF POOL

Loan Count Of Aggregate Loss

Incurred Loss Amount

__________________ _________________

0 $0.00

*Aggregate Loss Amount and Count do not include this month's activity

SUMMARY OF DISTRIBUTIONS FOR CURRENT CYCLE

Principal Scheduled Interest Net Interest Total

Distribution Interest Due Adjustment Distribution Other Distribution

__________________ ________________ ________________ ________________ ________________ _______________

$12,376,252.24 $1,383,547.26 $0.00 $1,383,547.26 $0.00 $13,759,799.50

INSURANCE RESERVES

Original Claims In Claims Coverage Coverage

Insurance Type Balance Progress Paid Adjustments Remaining

___________________ ________________ ________________ ________________ ________________ ________________

MPI $0.00 $0.00 $0.00 $0.00 $0.00

Special Hazard $3,010,286.00 $0.00 $0.00 $0.00 $3,010,286.00

Bankruptcy Bond

Single-Units $122,281.00 $0.00 $0.00 $0.00 $122,281.00

Multi-Units $0.00 $0.00 $0.00 $0.00 $0.00

Mortgage Repurchase $4,914,810.84 $0.00 $0.00 $0.00 $4,914,810.84

DELINQUENT INSTALLMENTS

ONE TWO THREE

Count Principal Balance Count Principal Balance Count Principal Balance

_____ _________________ _____ _________________ _____ _________________

14 $5,340,008.96 2 $762,458.98 0 $0.00

FOUR IN FORECLOSURE ACQUIRED

Count Principal Balance Count Principal Balance Count Principal Balance

_____ _________________ _____ _________________ _____ _________________

0 $0.00 1 $276,945.19 0 $0.00

The Class Principal Balances of each Class of the Class IIB1, IIB2, IIB3, IIB4,

IIB5, IIB6 Certificates immediately after the principal and interest

distribution on 06/25/2001 are as follows:

Class Class Principal Balance

IIB1 $7,961,750.91

IIB2 $3,062,212.35

IIB3 $2,694,746.72

IIB4 $1,347,374.34

IIB5 $979,907.72

IIB6 $1,102,396.51

__________________

Total $17,148,388.57

==================

Capitalized items used but not defined herein have the meanings ascribed to

them in the Prospectus Supplement.

EXHIBIT 99

DELINQUENT* MORTGAGE LOANS (As of May 31, 2001):

SERIES: 2001-1 POOL NUMBER: 1697

I II III

Total Loans In Total Delinquent Loans Delinquent

Mortgage Pool Loans 1 Month

-------------------- --------------------- ---------------------

Dollar Amount: $200,918,829.40** $6,379,413.13*** $5,340,008.96***

Number: 591 17 14

% of Pool: 100.00% 3.18% 2.66%

(Dollars)

% of Pool: 100.00% 2.88% 2.37%

(No. of Loans)

IV V VI

Loans Delinquent Loans Delinquent Loans In

2 Month 3 Month Foreclosure

-------------------- --------------------- ---------------------

Dollar Amount: $762,458.98*** $0.00*** $276,945.19***

Number: 2 0 1

% of Pool: 0.38% 0.00% 0.14%

(Dollars)

% of Pool: 0.34% 0.00% 0.17%

(No. of Loans)

VII

Loans Acquired

--------------------

Dollar Amount: $0.00***

Number: 0

% of Pool: 0.00%

(Dollars)

% of Pool: 0.00%

(No. of Loans)

* A Mortgage Loan is considered delinquent in a given month when a payment

due on the first day of the prior month has not been made on or before the

first day of such prior month.

** Reflects the outstanding principal balance of the Mortgage Pool after the

application of all June 01, 2001 scheduled payments and May 01, 2001

unscheduled payments on the mortgage loans.

*** Reflects outstanding principal balance of delinquent mortgage loans as of

May 31, 2001.

Trading Factor, calculated as of distribution date : 0.28431919.

By multiplying this factor by the original balance of the Mortgage Pool as of

the Cut-Off Date, current outstanding balance of the Mortgage Pool (after

application of scheduled payments up to and including June 01, 2001, and

unscheduled prepayments in months prior to June ) can be calculated.

EXHIBIT 99

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.

MASTER SERVICING

MORTGAGE PASS-THROUGH CERTIFICATES

06/2001 DISTRIBUTION REPORT

SERIES: pncms 2001-1 WEIGHTED AVERAGE PC RATE: 7.61188%

POOL NUMBER: Group 1 = 1696, 1698

____________________________________________________________________________________________

ISSUE DATE: 01/30/2001

CERTIFICATE BALANCE AT ISSUE: $460,925,895.00

CERTIFICATE

TOTAL ACCOUNT CERTIFICATE

NUMBER OF ACTIVITY BALANCE

MORTGAGES (@PC RATE) OUTSTANDING

_________ __________________ __________________

BALANCES FROM LAST FISCAL MONTH-END: 948 $363,953,466.26

PRINCIPAL POOL COLLECTION(S):

Scheduled Principal Collection Due Current Month $261,287.50

Unscheduled Principal Collection/Reversals $158,691.70

Liquidations-in-full 64 $25,872,110.98

Net principal Distributed $26,292,090.18 ($26,292,090.18)

CAPITAL LOSS (PRINCIPAL WRITTEN OFF): $0.00

BALANCE CURRENT FISCAL MONTH-END: 884 $337,661,376.08

SCHEDULED INTEREST AT MORTGAGE RATE: $2,498,220.84

UNSCHEDULED INTEREST AT MORTGAGE RATE:

Unscheduled Interest Collection/Reversals $0.00

Interest Uncollected on Liquidation $0.00

Interest Uncollected on Non-Earning Assets $0.00

Net Unscheduled Interest Distributed $0.00

OTHER:

Loan Conversion Fees $0.00

Expense Reimbursements $0.00

Gain on Liquidations $0.00

Hazard Insurance Premium Refunds $0.00

Net Other Distributions $0.00

SCHEDULED SERVICING FEE EXPENSES: $188,730.58

UNSCHEDULED SERVICING FEES:

Unscheduled Service Fee Collections/Reversals $0.00

Servicing Fees Uncollected on Liquidation $0.00

Servicing Fees Uncollected/Non-Earning Assets $0.00

Net Unscheduled Service Fees Distributed $0.00

MISCELLANEOUS EXPENSES: $0.00

NET FUNDS DISTRIBUTED: $28,601,580.44

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.

MASTER SERVICING

MORTGAGE PASS-THROUGH CERTIFICATES

06/2001 DISTRIBUTION REPORT

SERIES: pncms 2001-1 WEIGHTED AVERAGE PC RATE: 7.61188%

POOL NUMBER: Group 1 = 1696, 1698

____________________________________________________________________________________________

AGGREGATE LOSS AMOUNTS FROM INCEPTION OF POOL

Loan Count Of Aggregate Loss

Incurred Loss Amount

__________________ _________________

0 $0.00

*Aggregate Loss Amount and Count do not include this month's activity

SUMMARY OF DISTRIBUTIONS FOR CURRENT CYCLE

Principal Scheduled Interest Net Interest Total

Distribution Interest Due Adjustment Distribution Other Distribution

__________________ ________________ ________________ ________________ ________________ ________________

$26,292,090.18 $2,309,490.26 $0.00 $2,309,490.26 $0.00 $28,601,580.44

INSURANCE RESERVES

Original Claims In Claims Coverage Coverage

Insurance Type Balance Progress Paid Adjustments Remaining

___________________ ________________ ________________ ________________ ________________ ________________

MPI $0.00 $0.00 $0.00 $0.00 $0.00

Special Hazard $5,280,620.00 $0.00 $0.00 $0.00 $5,280,620.00

Bankruptcy Bond

Single-Units $173,919.00 $0.00 $0.00 $0.00 $173,919.00

Multi-Units $0.00 $0.00 $0.00 $0.00 $0.00

Mortgage Repurchase $9,218,517.90 $0.00 $0.00 $0.00 $9,218,517.90

DELINQUENT INSTALLMENTS

ONE TWO THREE

Count Principal Balance Count Principal Balance Count Principal Balance

_____ _________________ _____ _________________ _____ _________________

25 $9,602,615.77 0 $0.00 1 $646,962.46

FOUR IN FORECLOSURE ACQUIRED

Count Principal Balance Count Principal Balance Count Principal Balance

_____ _________________ _____ _________________ _____ _________________

1 $646,962.46 0 $0.00 0 $0.00

The Class Principal Balances of each Class of the Class CB1, CB2, CB3, CB4,

CB5, CB6 Certificates immediately after the principal and interest distribution

on 06/25/2001 are as follows:

Class Class Principal Balance

CB1 $8,956,782.78

CB2 $4,822,884.65

CB3 $2,526,272.90

CB4 $1,837,288.39

CB5 $1,148,305.87

CB6 $1,377,967.05

__________________

Total $20,669,501.64

==================

Capitalized items used but not defined herein have the meanings ascribed to

them in the Prospectus Supplement.

EXHIBIT 99

DELINQUENT* MORTGAGE LOANS (As of May 31, 2001):

SERIES: 2001-1 POOL NUMBER: Group 1 = 1696, 1698

I II III

Total Loans In Total Delinquent Loans Delinquent

Mortgage Pool Loans 1 Month

-------------------- --------------------- ---------------------

Dollar Amount: $337,661,376.08** $9,602,615.77*** $9,602,615.77***

Number: 1133 25 25

% of Pool: 100.00% 2.84% 2.84%

(Dollars)

% of Pool: 100.00% 2.21% 2.21%

(No. of Loans)

IV V VI

Loans Delinquent Loans Delinquent Loans In

2 Month 3 Month Foreclosure

-------------------- --------------------- ---------------------

Dollar Amount: $0.00*** $0.00*** $0.00***

Number: 0 0 0

% of Pool: 0.00% 0.00% 0.00%

(Dollars)

% of Pool: 0.00% 0.00% 0.00%

(No. of Loans)

VII

Loans Acquired

--------------------

Dollar Amount: $0.00***

Number: 0

% of Pool: 0.00%

(Dollars)

% of Pool: 0.00%

(No. of Loans)

* A Mortgage Loan is considered delinquent in a given month when a payment

due on the first day of the prior month has not been made on or before the

first day of such prior month.

** Reflects the outstanding principal balance of the Mortgage Pool after the

application of all June 01, 2001 scheduled payments and May 01, 2001

unscheduled payments on the mortgage loans.

*** Reflects outstanding principal balance of delinquent mortgage loans as of

May 31, 2001.

Trading Factor, calculated as of distribution date : 0.47782286.

By multiplying this factor by the original balance of the Mortgage Pool as of

the Cut-Off Date, current outstanding balance of the Mortgage Pool (after

application of scheduled payments up to and including June 01, 2001, and

unscheduled prepayments in months prior to June ) can be calculated.

MORTGAGE PASS THROUGH CERTIFICATES SERIES 2001-1 8-K