PIMCO Commercial Mortgage Securities Trust, Inc.

First Quarter investment performance results and statistical portfolio information


NEWPORT BEACH, Calif., April 28, 2004 (PRIMEZONE) -- PIMCO Commercial Mortgage Securities Trust, Inc. (NYSE:PCM) today released its investment performance results and statistical portfolio information for the period January 1, 2004 through March 31, 2004 (first quarter).

PIMCO Commercial Mortgage Securities Trust, Inc. ("PCM" or the "Fund") is a closed-end bond fund that invests principally in commercial mortgage-backed securities ("CMBS"). The primary investment objective of the Fund is to achieve high current income, with capital gain from the disposition of investments as a secondary objective. Pacific Investment Management Company LLC ("PIMCO"), an investment adviser with more than $394 billion of assets under management as of March 31, 2004, is responsible for managing the Fund's investment portfolio.



       Investment Performance, Price and Dividend Information

      The Fund's valuation and investment performance information
                          are as follows:

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 Performance for the periods ended 3/31/04

                         3       6       1       3       5      10
                        Mos     Mos     Year   Years   Years   Years
                                                (1)     (1)     (1)
 PCM Based on Net
   Asset Value (%)     4.44    7.16    9.61    9.59     8.96    9.32

 PCM Based on NYSE
   Share Price (%)     3.11    7.07   13.20   12.76    12.39   11.43

 Lehman Aggregate
   Index (%)           2.66    2.98    5.40    7.44     7.29    7.54

 (1) Annualized
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The Fund's total return investment performance is net of all fees and expenses and assumes the reinvestment of dividends.



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                        Price Information

   Pricing Date        NYSE Share Price          Net Asset Value
   ------------        ----------------          ---------------
     3/31/2004               $14.70                   $12.80
    12/31/2003               $14.53                   $12.53
     3/31/2003               $14.04                   $12.77
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       Date          Premium/(Discount) to Net Asset Value
       ----          -------------------------------------
     3/31/2004                    14.84%
    12/31/2003                    15.96%
     3/31/2003                     9.95%
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                      Dividend Information

 Regular monthly dividend per share:               $0.09375
 Total dividends declared in the quarter:          $0.28125
 Annualized dividend yield at 3/31/2004
   based on NYSE share price:                       7.65%
 Annualized dividend yield at 3/31/2004
   based on net asset value:                        8.79%
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                         Portfolio Statistics
          The Fund's investment portfolio had the following
               characteristics as of March 31, 2004:

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 Net Assets:               $143.2 million
 Average Duration:         4.2 years
 Average Maturity:         4.6 years

 Quality Ratings:          47% AAA, 4% AA, 6% A, 24% BAA, 14% BA,
                            4% B, 1% less than B
 Average Quality:          BAA+
 Sector Weightings:        39.4% Multi-Class (a mix of all commercial
                           property types, including office buildings
                           and industrial properties), 32.0%
                           Multi-Family (apartment buildings), 8.8%
                           Real Estate ABS, 6.7% Hospitality (hotels
                           and motels), 3.9% Commercial Paper, 1.8%
                           Healthcare (hospitals and nursing care
                           facilities), 0.1% Corporate, 7.3% Other.

 % Leverage (3/31/04):     32.9% (The Fund's use of leverage is
                                  subject to change at any time.)

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Market Commentary

During the first quarter, the Fund's portfolio of commercial mortgage-backed securities ("CMBS") posted a 4.44% return based on net asset value and a 3.11% return based on its NYSE share price. In comparison, the Lehman Brothers Aggregate Bond Index (which includes Treasury, investment-grade corporate, and residential mortgage-backed securities) returned 2.66% for the same period. The Fund maintained an uninterrupted and constant dividend throughout the quarter, holding the monthly per share rate steady at $0.09375. These dividend payouts equate to an annualized dividend yield of 7.65% based on the Fund's NYSE trading price as of March 31, 2004.

Bonds gained ground in the first quarter of 2004, as concern about the durability of the U.S. economic recovery pushed already low interest rates even lower. Demand for relatively safe assets rose in March. The yield on the benchmark 10-year Treasury bond fell 0.41% to close at 3.84% percent. Lifted by the tailwind of falling rates, every fixed income sector was in positive territory for the quarter.

Confidence that the Federal Reserve would not raise the 1% federal funds rate anytime soon underpinned the bond rally. Markets expected the Fed to stay on hold while employment growth in the U.S. remained slower at this stage of expansion than in any recovery since World War II. Weakness in the labor market persisted even though growth overall continued to be robust and corporate profits surged. The reason was enhanced productivity, which allowed companies to meet rising demand with the same or fewer workers. Investors worried that even if hiring eventually picked up, it might not match that of previous expansions, thereby denting consumer confidence and undermining the recovery.

Even as concern mounted that the U.S. recovery could slow down, there were signs that expansion in Asia could take pressure off the U.S. as the main driver of global growth. Acceleration in consumer spending in Japan, the world's second largest economy, raised hopes that Japan could extend its export-led recovery. Surging demand from China, with whom Japan now runs a trade surplus, has helped revive the Japanese economy. Chinese demand was also a major reason for soaring commodity prices, as commodities posted double-digit returns during the first quarter.

For further information, please contact Jeff Sargent, PIMCO Commercial Mortgage Securities Trust, Inc., at (949) 720-4712.

Past performance is no guarantee of future results. Investment return, dividend rate, and share price will fluctuate so that shares, when sold, may be worth more or less than their original cost.



            

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