Securities and Exchange Commission Washington, D. C. 20549 Schedule 13-G/A Under the Securities and Exchange Act of 1934 Amazon.com Inc. Common Stock CUSIP Number 023135106 Check the following box if a fee is being paid with this statement. [ ] CUSIP No. 023135106 1) Name of reporting person: Legg Mason, Inc. Tax Identification No: 52-1200960 2) Check the appropriate box if a member of a group: a) n/a b) n/a 3) SEC use only 4) Place of organization: Baltimore, Maryland Number of shares beneficially owned by each reporting person with: 5) Sole voting power: 38,859,092 6) Shared voting power: 13,740,088 7) Sole dispositive power: - 0 - 8) Shared dispositive power: 52,599,180 9) Aggregate amount beneficially owned by each reporting person: 52,599,180 10) Check if the aggregate amount in row (9) excludes certain shares: n/a 11) Percent of class represented by amount in row (9): 14.67% 12) Type of reporting person: HC Item 1a) Name of issuer: Amazon.com Inc. Item 1b) Address of issuer's principal executive offices: 1200 12th Ave. S., Ste. 1200 Seattle, WA 98144-2734 Item 2a) Name of person filing: Legg Mason, Inc. Item 2b) Address of principal business office: 100 Light Street Baltimore, Maryland 21202 Item 2c) Citizenship: Maryland Corporation Item 2d) Title of class of securities: Common Stock Item 2e) CUSIP number: 023135106 Item 3) If this statement is filed pursuant to Rule 13d-1(b), or 13d-2(b) , check whether the person filing is a: (a) [ ] Broker or dealer under Section 15 of the Act. (b) [ ] Bank as defined in Section 3(a)(6) of the Act. (c) [ ] Insurance Company as defined in section 3(a)(19) of the Act. (d) [ ] Investment Company registered under Section 8 of the Investment Company Act. (e) [ ] Investment Adviser registered under Section 203 of the Investment Advisers Act of 1940. (f) [ ] Employee Benefit Plan, Pension Fund which is subject to ERISA of 1974 or Endowment Fund; see 240.13d-1(b)(ii)(F). (g) [X] Parent holding company, in accordance with 240.13d-1(b)(ii)(G). (h) [ ] Group, in accordance with 240.13d-1(b)(1)(ii)(H). Item 4) Ownership: (a) Amount beneficially owned: 52,599,180 (b) Percent of Class: 14.67% (c) Number of shares as to which such person has: (i) sole power to vote or to direct the vote: 38,859,092 (ii) shared power to vote or to direct the vote: 13,740,088 (iii) sole power to dispose or to direct the disposition of: - 0 - (iv) shared power to dispose or to direct the disposition of: 52,599,180 Item 5) Ownership of Five Percent or less of a class: n/a Item 6) Ownership of more than Five Percent on behalf of another person: Various persons have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities. The interest of one person, Legg Mason Value Trust, Inc., an investment company registered under the Investment Company Act of 1940, amounted to 8.25% of the total outstanding stock as of March 31, 2001. Item 7) Identification and classification of the subsidiary which acquired the security being reported on by the parent holding company: Legg Mason Funds Management, Inc., as investment adviser with discretion Legg Mason Capital Management, Inc., as investment adviser with discretion LMM LLC, as investment adviser with discretion Bartlett & Co., as investment adviser with discretion Bingham Legg Advisers LLC, as investment adviser with discretion Legg Mason Wood Walker, Inc., as investment adviser and broker/dealer with discretion Legg Mason Trust, fsb, as investment adviser with discretion Item 8) Identification and classification of members of the group: n/a Item 9) Notice of dissolution of group: n/a Item 10) Certification: By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired in the ordinary course of business and were not acquired for the purpose of and do not have the effect of changing or influencing the control of the issuer of such securities and were not acquired in connection with or as a participant in any transaction having such purposes or effect. Signature: After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. Date: 4/4/01 ________________________________________________________________ By: Timothy C. Scheve, Sr. Ex. Vice President, Legg Mason, Inc. Addendum to Schedule 13G/A filed by Legg Mason, Inc. Tax Identification No. 52-1200960 Shares of Amazon.com Inc. owned a/o 3/31/01 CUSIP 023135106 Shares Sole Shared Sole Shared Name Class Owned V P V P D P D P Legg Mason Funds Management, Inc. IA 36,859,092 36,859,092 36,859,092 Legg Mason Capital Management, Inc. IA 13,262,520 13,262,520 13,262,520 LMM, LLC IA 2,000,000 2,000,000 2,000,000 Bartlett & Co. IA 3,445 3,445 3,445 Bingham Legg Advisers LLC IA 400 400 400 Legg Mason Wood Walker, Inc. BD, IA 451,968 451,968 451,968 Legg Mason Trust, fsb IA 21,755 21,755 21,755 Shares Outstanding 358,555,000 % Owned 14.67% Legg Mason Funds Management, Inc., 100 Light Street, Baltimore, MD 21202, a wholly owned subsidiary of Legg Mason, Inc. and an investment adviser registered under the Investment Advisers Act of 1940, is the beneficial owner of 36,859,092 shares, or 10.28% of the common stock outstanding of Amazon.com Inc. as a result of acting as investment adviser to various investment companies. The ownership of one investment company, Legg Mason Value Trust, Inc., amounted to 29,586,000 shares, or 8.25% of the common stock outstanding. Legg Mason Value Trust, Inc. has its principal office at 100 Light Street, Baltimore, Maryland 21202. Joint Filing Agreement ----------------------- Each party signing below agrees that this statement is submitted as a joint filing on behalf of all of the undersigned. Legg Mason, Inc. By_________________________________________________ Timothy C. Scheve, Sr. Ex. Vice President Legg Mason Funds Management, Inc. By_________________________________________________ Jennifer W. Murphy, Sr. Vice President Legg Mason Value Trust, Inc. By_________________________________________________ Marc R. Duffy, Vice President