424B3 1 f424b3_021706-software.txt PROSPECTUS SUPPLEMENT REGISTRATION NO. 333-43766 (To Prospectus dated February 17, 2006) Filed Pursuant to Rule 424(b)(3) [GRAPHIC OMITTED][GRAPHIC OMITTED] 1,000,000,000 Depositary Receipts Software HOLDRS (SM) Trust This prospectus supplement supplements information contained in the prospectus dated February 17, 2006 relating to the sale of up to 1,000,000,000 depositary receipts by the Software HOLDRS (SM) Trust. The share amounts specified in the table in the "Highlights of Software HOLDRS" section of the base prospectus shall be replaced with the following: Share Primary Name of Company Ticker Amounts Trading Market ------------------------------------- ------ ------- -------------- Adobe Systems Incorporated ADBE 13.38 NASDAQ BMC Software, Inc. BMC 7 NYSE Check Point Software Technologies Ltd. CHKP 6 NASDAQ CA, Inc. CA 17 NYSE Intuit Inc. INTU 12 NASDAQ Microsoft Corporation MSFT 30 NASDAQ Nuance Communications Inc. NUAN .77 NASDAQ Openwave Systems Inc. OPWV 0.6667 NASDAQ Oracle Corporation ORCL 24 NASDAQ SAP AG-preference shares * SAP 16 NYSE Sapient Corporation SAPE 3 NASDAQ Symantec Corporation SYMC 7.8694 NASDAQ TIBCO Software Inc. TIBX 5 NASDAQ ---------- * The preference shares of this non-U.S. company trade in the United States as American Depositary Receipts. Please see "Risk Factors" and "United States Federal Income Tax Consequences--Special considerations with respect to underlying securities of foreign issuers" for additional factors to consider with respect to an investment in a non-U.S. company. The share amounts listed in the table above reflect all previous stock splits, dividends and business combination transactions. The date of this prospectus supplement is December 31, 2006.