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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 18pt; FONT-FAMILY: Times New Roman"><strong>SECURITIES
      AND EXCHANGE COMMISSION</strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 12pt; FONT-FAMILY: Times New Roman">WASHINGTON,
      D.C. 20549</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 18pt; FONT-FAMILY: Times New Roman"><strong>FORM
      8-K</strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>CURRENT
      REPORT PURSUANT TO SECTION 13 OR 15(d) OF</strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>THE
      SECURITIES EXCHANGE ACT OF 1934</strong></font></div>
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Date
      of
      Report (Date of earliest event reported)</font><font id="TAB2" style="COLOR: black; LETTER-SPACING: 27pt">&#160;</font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><u>May
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                Suisse (USA), Inc.</u></strong></font></div>
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            <td colspan="2" valign="top" width="87%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(Exact
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                File Number)</font></div>
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                Employer </font></div>
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                No.)</font></div>
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            <td align="left" valign="top" width="43%">&#160;</td>
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              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><u>Eleven
                Madison Avenue, New York, New York</u></font></div>
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                of principal executive office)</font></div>
            </td>
            <td valign="top" width="43%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(Zip
                Code)</font></div>
            </td>
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            <td valign="top" width="43%">&#160;</td>
            <td valign="top" width="43%">&#160;</td>
          </tr>
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            <td colspan="2" valign="top" width="87%" style="border-bottom: medium none;">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><u>(212)
                325-2000</u></font></div>
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              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(Registrant's
                telephone number, including area code)</font></div>
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          </tr>
          <tr>
            <td colspan="2" valign="top" width="87%">&#160;</td>
          </tr>
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            <td colspan="2" valign="top" width="87%" style="border-bottom: medium none;">
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center">________________________________________</div>
            </td>
          </tr>
          <tr>
            <td colspan="2" valign="top" width="87%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(Former
                name or former address, if changed since last report)</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" colspan="2" valign="top" width="87%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center">&#160;</div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Check
                the appropriate box below if the Form 8-K filing is intended to
                simultaneously satisfy the filing obligation of the registrant under
                any
                of the following provisions (</font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><em>see</em></font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">
                General Instruction A.2. below):</font></div>
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                communications pursuant to Rule 425 under the Securities Act (17
                CFR
                230.425)</font></div>
              <div style="MARGIN-LEFT: 54pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Wingdings">q</font><font id="TAB2" style="COLOR: black; LETTER-SPACING: 9pt">&#160;&#160;</font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Soliciting
                material pursuant to Rule 14a-12 under Exchange Act (17 CFR
                240.14a-12)</font></div>
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                communication pursuant to Rule 14d-2(b) under the Exchange Act (17
                CFR
                240.14d-2(b))</font></div>
              <div style="MARGIN-LEFT: 54pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Wingdings">q</font><font id="TAB2" style="COLOR: black; LETTER-SPACING: 9pt">&#160;&#160;</font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Pre-commencement
                communications pursuant to Rule 13e-4(c) under the Exchange Act (17
                CFR
                240.13e-4(c))</font></div>
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong><u>Item
      8.01. Other Events</u></strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">On
      May 2,
      2006, Credit Suisse Group, our ultimate parent, released its financial results
      for the three months ended March 31, 2006, including the financial results
      of
      the Investment Banking, Private Banking and Asset Management segments, of which
      we are a part.</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Credit
      Suisse Group reported net income of CHF 2,604 million for the three months
      ended
      March 31, 2006. The Investment Banking, Private Banking and Asset Management
      segments reported income from continuing operations before taxes of CHF 1,564
      million, CHF 1,308 million and CHF 234 million, respectively, for the three
      months ended March 31, 2006. </font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">We
      have
      not reported our financial results for the quarter ended March 31, 2006. We
      will
      report these results in connection with the filing of our quarterly report
      on
      Form 10-Q.</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">We
      expect
      to report net income of approximately $300 million in the first quarter of
      2006
      compared to $176 million in the first quarter of 2005. We expect our total
      net
      revenues to be approximately $2.9 billion, an increase of approximately $1.3
      billion, or 79%, compared to the first quarter of 2005. Net revenues for the
      first quarter of 2006 include approximately $950 million from the consolidation
      of certain private equity funds and other entities, compared to $157 million
      in
      the first quarter of 2005. Net income is unaffected by this consolidation as
      we
      record offsetting minority interests and related operating expenses. The
      increase in net revenues also reflects higher revenues across all of our
      Investment Banking businesses. We expect our total expenses for the first
      quarter of 2006 to be approximately $1.5 billion, an increase of approximately
      $290 million, or 23%, compared to the first quarter of 2005, primarily
      reflecting higher employee compensation and benefits expenses. </font></div>
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    </div><br>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 72pt; TEXT-INDENT: -72pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><u>SIGNATURE</u></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Pursuant
      to the requirements of the Securities Exchange Act of 1934, the Registrant
      has
      duly caused this Report to be signed on its behalf by the undersigned hereunto
      duly authorized.</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
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          <tr valign="top" bgcolor="#ffffff">
            <td width="50%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;</font></td>
            <td width="1%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;</font></td>
            <td width="49%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;</font></td>
          </tr>
          <tr valign="top" bgcolor="#ffffff">
            <td>&#160;</td>
            <td>&#160;</td>
            <td><font size="2">Credit Suisse (USA), Inc.</font></td>
          </tr>
          <tr valign="top" bgcolor="#ffffff">
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;<br>&#160;</font></td>
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;<br>&#160;</font></td>
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;<br>&#160;</font></td>
          </tr>
          <tr valign="top" bgcolor="#ffffff">
            <td>&#160;</td>
            <td>&#160;</td>
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">/s/&#160;David
              C.
              Fisher</font></td>
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          <tr valign="top" bgcolor="#ffffff">
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            <td align="left">
              <div>
                <hr style="COLOR: black" align="left" noshade size="2" width="80%">
              </div>
              <div><font size="2">David C. Fisher</font></div>
              <div><font size="2"><em>Chief Financial and Accounting
                Officer</em></font></div>
            </td>
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            <td>&#160;</td>
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      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">May
        2,
        2006</font></div><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font>&#160;</div>
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{"company-data": {"conformed-name": "CREDIT SUISSE (USA) INC", "cik": "0000029646", "assigned-sic": "6200", "irs-number": "131898818", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "001-06862", "film-number": "06797802"}, "business-address": {"street1": "ELEVEN MADISON AVE", "city": "NEW YORK", "state": "NY", "zip": "10010", "phone": "212 325-2000"}, "mail-address": {"street1": "ELEVEN MADISON AVE", "city": "NEW YORK", "state": "NY", "zip": "10010"}, "former-company": [{"former-conformed-name": "CREDIT SUISSE FIRST BOSTON USA INC", "date-changed": "20001116"}, {"former-conformed-name": "DONALDSON LUFKIN & JENRETTE INC /NY/", "date-changed": "19960330"}]}
SECURITIES
      AND EXCHANGE COMMISSION
WASHINGTON,
      D.C. 20549
FORM
      8-K
CURRENT
      REPORT PURSUANT TO SECTION 13 OR 15(d) OF
THE
      SECURITIES EXCHANGE ACT OF 1934
Date
      of
      Report (Date of earliest event reported)
May
      2,
      2006
Credit
                Suisse (USA), Inc.
(Exact
                name of registrant as specified in its charter)
Delaware
(State
                or other jurisdiction of incorporation or organization)
1-6862
13-1898818
(Commission
                File Number)
(I.R.S.
                Employer
(Identification
                No.)
Eleven
                Madison Avenue, New York, New York
10010
(Address
                of principal executive office)
(Zip
                Code)
(212)
                325-2000
(Registrant's
                telephone number, including area code)
________________________________________
(Former
                name or former address, if changed since last report)
Check
                the appropriate box below if the Form 8-K filing is intended to
                simultaneously satisfy the filing obligation of the registrant under
                any
                of the following provisions (
see
General Instruction A.2. below):
q
Written
                communications pursuant to Rule 425 under the Securities Act (17
                CFR
                230.425)
q
Soliciting
                material pursuant to Rule 14a-12 under Exchange Act (17 CFR
                240.14a-12)
q
Pre-commencement
                communication pursuant to Rule 14d-2(b) under the Exchange Act (17
                CFR
                240.14d-2(b))
q
Pre-commencement
                communications pursuant to Rule 13e-4(c) under the Exchange Act (17
                CFR
                240.13e-4(c))
Item
      8.01. Other Events
On
      May 2,
      2006, Credit Suisse Group, our ultimate parent, released its financial results
      for the three months ended March 31, 2006, including the financial results
      of
      the Investment Banking, Private Banking and Asset Management segments, of which
      we are a part.
Credit
      Suisse Group reported net income of CHF 2,604 million for the three months
      ended
      March 31, 2006. The Investment Banking, Private Banking and Asset Management
      segments reported income from continuing operations before taxes of CHF 1,564
      million, CHF 1,308 million and CHF 234 million, respectively, for the three
      months ended March 31, 2006.
We
      have
      not reported our financial results for the quarter ended March 31, 2006. We
      will
      report these results in connection with the filing of our quarterly report
      on
      Form 10-Q.
We
      expect
      to report net income of approximately $300 million in the first quarter of
      2006
      compared to $176 million in the first quarter of 2005. We expect our total
      net
      revenues to be approximately $2.9 billion, an increase of approximately $1.3
      billion, or 79%, compared to the first quarter of 2005. Net revenues for the
      first quarter of 2006 include approximately $950 million from the consolidation
      of certain private equity funds and other entities, compared to $157 million
      in
      the first quarter of 2005. Net income is unaffected by this consolidation as
      we
      record offsetting minority interests and related operating expenses. The
      increase in net revenues also reflects higher revenues across all of our
      Investment Banking businesses. We expect our total expenses for the first
      quarter of 2006 to be approximately $1.5 billion, an increase of approximately
      $290 million, or 23%, compared to the first quarter of 2005, primarily
      reflecting higher employee compensation and benefits expenses.
SIGNATURE
Pursuant
      to the requirements of the Securities Exchange Act of 1934, the Registrant
      has
      duly caused this Report to be signed on its behalf by the undersigned hereunto
      duly authorized.
Credit Suisse (USA), Inc.
/s/ David
              C.
              Fisher
David C. Fisher
Chief Financial and Accounting
                Officer
May
        2,
        2006